Absorbent structure for absorbent articles

Abstract
Absorbent structures for absorbent articles are provided. The absorbent structure includes an absorbent layer with absorbent material supported by a supporting sheet, and a channel that is free of the absorbent material. The channel has a wet integrity of at least 20%.
Description
FIELD

The present disclosure relates to an absorbent structure for an absorbent article such as a diaper comprising an absorbent layer with absorbent material containing superabsorbent polymer particles supported by a supporting sheet, and having first and a second substantially longitudinal channels that are free of said superabsorbent polymeric particles, and that comprises one or more adhesive material to immobilize said absorbent material onto said supporting sheet. The channels may be permanent, that is their integrity is at least partially maintained both in dry and wet state and provide improved fit and/or liquid acquisition/transportation, and/or improved performance throughout the use of the absorbent structure.


BACKGROUND

Disposable absorbent articles for receiving and retaining bodily discharges such as urine or feces are well known in the art. Examples of these include disposable diaper(s), training pants and adult incontinence articles. Typically, disposable diapers comprise a liquid pervious topsheet that faces the wearer's body, a liquid impervious backsheet that faces the wearer's clothing and an absorbent core interposed between the liquid pervious topsheet and the backsheet.


Since their introduction into the market place, disposable diapers have continued to improve regarding comfort, fit and functionalities.


An important component of disposable absorbent articles is the absorbent core/absorbent structure. The absorbent core/structure typically includes superabsorbent polymer material, such as hydrogel-forming polymer material, also referred to as absorbent gelling material, AGM, or superabsorbent polymer, SAP. This superabsorbent polymer material ensures that large amounts of bodily fluids, e.g. urine, can be absorbed by the absorbent article during its use and be locked away, thus providing low rewet and good skin dryness.


Traditionally, the superabsorbent polymer material is incorporated into the absorbent core structure with pulp, i.e. cellulose fibres. However, over the past years, significant effort has been spent to make thinner absorbent core structures which can still acquire and store large quantities of discharged body fluids, in particular urine. Hereto, it has been proposed to reduce or eliminate these cellulose fibres from the absorbent core structures.


In some instances, to maintain the mechanical stability of the absorbent core structures, small quantities of thermoplastic adhesive material, such as fibrous thermoplastic adhesive material, may for example be added to stabilize the absorbent polymer material. Resultantly, absorbent structures having the required permeability/porosity, reduced gel-blocking, and that form stable structures in use or transport, are provided.


However, it was found that some absorbent core structures with reduced cellulose fibre levels, whilst very thin when not loaded with bodily fluids, may have an increased stiffness when partially loaded or fully loaded, especially in those regions which comprise most of the absorbent capacity of the absorbent article, such as the front region and crotch region of the diaper. Increased stiffness is not desirable since it reduces the absorbent article's ability to conform to the body of the wearer once worn. Therefore there is still a need for absorbent articles having an increased flexibility during the whole use of the article which deliver in particular a better fit in the wet state (at equal absorbing and containing performances).


The inventors have found that by providing specific permanent channels that are free of superabsorbent polymer particles or free of superabsorbent polymer material improved liquid transport is achieved, and hence faster acquisition, and more efficient liquid absorbency over the whole absorbent structure; even though less absorbent material may be used, surprisingly improved performance can be achieved. By immobilising the absorbent material or channels (by the use of adhesive, the channels are more permanent, and remain channels during the use of the absorbent structure, e.g. when friction is applied to the absorbent structure, or when the absorbent structure is wetted, and the absorbent material expands. Furthermore, the inventors found that by the provision of such channels, for example in front region of the absorbent core/structure, and/or in the crotch region of the absorbent core/structure, a diaper of increased flexibility is provided, whilst it surprisingly maintains its performance throughout its use.


SUMMARY

The present disclosure provides an absorbent structure (13) for an absorbent article such as a diaper (1), comprising a supporting sheet (16) and an absorbent layer (17) supported thereon; said absorbent layer (17) comprising an absorbent material (50) that contains at least a superabsorbent polymer material and optionally a cellulosic material (it may be substantially only comprising said superabsorbent material, and thus no cellulosic material); said absorbent structure (13) and absorbent layer (17) having a longitudinal dimension and average length, and transverse dimension and average width, and a height; said absorbent layer (17) having a longitudinal axis and perpendicular thereto a transverse axis; and said absorbent layer (17) having a first longitudinally extending side portion (20) on one side of said longitudinal axis, and a second longitudinally extending side portion (20) on the other side of said longitudinal axis; and said absorbent structure (13) and said absorbent layer (17) thereof having a front region, back region and therein between a crotch region, each arranged sequentially in said longitudinal dimension;


whereby said absorbent layer (17) has at least a first substantially longitudinally extending channel (26) present in said first side portion (20), and a second substantially longitudinally extending channel (26) present in said second side portion (20), said channels (26) being substantially free of said superabsorbent polymer material, or for example free of any absorbent material (50), and extending through said height of said absorbent layer (17); and whereby said absorbent structure (13) comprises one or more adhesive materials (40; 60) to at least partially immobilize said absorbent layer (17) onto said supporting sheet (16).


The absorbent layer (17) has a transverse dimension and an average width W, a longitudinal dimension and average length L; and typically, each channel (26) has an average width W′ that is least 4% of W and up to 25% of the average width W of said absorbent layer (17); and each channel (26) has for example an average length L′ that is from 5% of L to 80% of L.; or for example, W′ is at least 7% of W, up to 20%, or up to 15%, of W; and/or W′ is at least 5 mm and up to for example 20 mm.


To avoid leakage to the sides, said channels (26) do not extend up to any of the longitudinal side edges (18) or a transverse front edge (19) or back edge (19) of said absorbent layer (17). For example, to improve fit and provide liquid transport, said channel (26) are present in said crotch region and for example also front region, and optionally in said back region.


In some embodiments, no channel (26) coincides with the longitudinal axis. In some embodiments, the smallest transverse distance between said two channels (26) is at least 5% of W, at least 10% W.


In some embodiments herein, said one or more adhesive material includes a first adhesive material (40) applied to said absorbent layer (17) or part thereof, once said layer is present on said supporting sheet (16), optionally said first adhesive material being a thermoplastic fibrous adhesive material.


Alternatively, or in addition, in some embodiments herein, said one or more adhesive materials includes a second adhesive material (60) present between said supporting sheet (16) and said absorbent layer (17), optionally a second adhesive material that is applied to said supporting sheet (16) or part thereof, prior to deposition of said absorbent layer (17) or absorbent material (50) thereof onto said supporting sheet (16).


For example, said one or more adhesives (40; 60) are at least present in said channels (26), and wherein said supporting sheet (16) folds into said channels (26), or part thereof, and whereby said supporting sheet (16) is adhered to the absorbent material (50) that forms the substantially longitudinal walls of said channels (26), or part of said walls.


The disclosure also relates to an absorbent core (7) comprising the absorbent structure (13) as described herein, this being the first absorbent structure (13), and comprising a further material present adjacent said absorbent layer (17), selected from: i) a further supporting sheet (16) and/or ii) an acquisition material layer (70); iii) a second absorbent structure (13; 13′), comprising a second supporting sheet (16′) and a second absorbent layer (17′), whereby said second absorbent layer (17′) and said absorbent layer (17) of the first structure (13) are sandwiched between said supporting sheet (16) of the first structure and said second supporting sheet (16′), optionally said second absorbent structure (13) being as in any preceding claim.


Hereby, the second absorbent structure (13) may be also an absorbent structure (13) without channels (26), (as for example shown in FIGS. 2B, 9. 10 and 11), or it may be an absorbent structure (13) of the disclosure; hereby said channels (26) of said second absorbent structure (13) may for example be substantially identical to said channels (26) of said first absorbent structure (13) and substantially completely overlapping therewith.


In some embodiments herein, the supporting sheet (16) of the first structure and/or said second supporting sheet (16;16′) fold into said channels (26) or part thereof, and said one or more adhesive material(s) are at least present in said channels (26), or part thereof, and whereby said supporting sheet (16;16′) are adhered to one another in said channels (26) by said one or more adhesive material (s).


A pressure may be applied to said supporting sheet of the absorbent structure, or to the further material, or to the further supporting sheet (16′) of the second absorbent structure, or combination thereof; for example the pressure may be applied selectively to the supporting sheet (1616′) portion(s) that correspond to said channel(s) (26), to (further) fold said supporting sheet (16) into said channels (26), and optionally, to aid bonding of said supporting sheet (16) into said channels (26) to the walls of the channels, or to the further material/second supporting sheet (16′).


The disclosure also relates to an absorbent article, such as a diaper (1), comprising the absorbent structure (13) or absorbent core (7) according to any of the preceding claims.





BRIEF DESCRIPTION OF THE DRAWINGS


FIG. 1 shows a plane view of a diaper in accordance with one non-limiting embodiment.



FIG. 2A shows a perspective view of an absorbent structure in accordance with one non-limiting embodiment.



FIG. 2B shows a perspective view of an alternative absorbent layer in accordance with one non-limiting embodiment.



FIG. 2C shows a perspective view of an absorbent structure that may be combined with the absorbent structure in accordance with one non-limiting embodiment.



FIG. 3A shows a perspective view of an alternative absorbent layer in accordance with one non-limiting embodiment.



FIG. 3B shows a perspective view of an alternative absorbent structure in accordance with one non-limiting embodiment.



FIG. 4A shows a perspective view of an alternative absorbent layer in accordance with one non-limiting embodiment.



FIG. 4B shows a perspective view of an alternative absorbent layer in accordance with one non-limiting embodiment.



FIG. 5 shows a cross sectional view of an absorbent core in accordance with one non-limiting embodiment.



FIG. 6 shows a cross sectional view of an alternative absorbent core in accordance with one non-limiting embodiment.



FIG. 7 shows a cross sectional view of an alternative absorbent core in accordance with one non-limiting embodiment.



FIG. 8 shows a cross sectional view of an alternative absorbent core in accordance with one non-limiting embodiment.



FIG. 9 shows a cross sectional view of an alternative absorbent core in accordance with one non-limiting embodiment.



FIG. 10 shows a cross sectional view of an alternative absorbent core in accordance with one non-limiting embodiment.



FIG. 11 shows a cross sectional view of an alternative absorbent core in accordance with one non-limiting embodiment.



FIG. 12 shows a cross sectional view of an alternative absorbent core in accordance with one non-limiting embodiment.



FIG. 13 shows a cross sectional view of an alternative absorbent core in accordance with one non-limiting embodiment.



FIG. 14 shows a method/apparatus of forming an absorbent core in accordance with one non-limiting embodiment comprising two absorbent structures of the disclosure.





DETAILED DESCRIPTION

Definitions


“Absorbent article” refers to a device that absorbs and contains body exudates, and, more specifically, refers to devices that are placed against or in proximity to the body of the wearer to absorb and contain the various exudates discharged from the body. Absorbent articles may include adult and infant diaper (1), including pants, such as infant training pants and adult incontinence undergarments, and feminine hygiene products, such as sanitary napkins and panty-liners and adult in continent pads, and breast pads, care mats, bibs, wound dressing products, and the like. Absorbent articles may further include floor cleaning articles, food industry articles, and the like. As used herein, the term “body fluids” or “body exudates” includes, but is not limited to, urine, blood, vaginal discharges, breast milk, sweat and fecal matter.


As used herein “diaper (1)” refers to devices which are intended to be placed against the skin of a wearer to absorb and contain the various exudates discharged from the body. Diaper (1)s are generally worn by infants and incontinent persons about the lower torso so as to encircle the waist and legs of the wearer. Examples of diaper (1)s include infant or adult diaper (1)s and pant-like diaper (1)s such as training pants. “Training pant”, as used herein, refers to disposable garments having a waist opening and leg openings designed for infant or adult wearers. A pant may be placed in position on the wearer by inserting the wearer's legs into the leg openings and sliding the pant into position about a wearer's lower torso. A pant may be preformed by any suitable technique including, but not limited to, joining together portions of the article using refastenable and/or non-refastenable bonds (e.g., seam, weld, adhesive, cohesive bond, fastener, etc.). A pant may be preformed anywhere along the circumference of the article (e.g., side fastened, front waist fastened).


“Disposable” is used herein to describe articles that are generally not intended to be laundered or otherwise restored or reused (i.e., they are intended to be discarded after a single use and, may be recycled, composted or otherwise disposed of in an environmentally compatible manner).


As used herein “absorbent structure (13)” refers to a three dimensional structure useful to absorb and contain liquids, such as urine. The absorbent structure (13) may be the absorbent structure (13) of an absorbent article or may be only part of the absorbent core (7) of an absorbent article, i.e. an absorbent component of the absorbent core (7), as will be further described herein.


“Superabsorbent polymer material” as used herein refers to substantially water-insoluble polymer material that can absorb at least 10 times (and typically at least 15 times or at least 20 times) its weight of a 0.9% saline solution in de-mineralized water as measured using the Centrifuge Retention Capacity test (Edana 441.2-01).


“Nonwoven material” as used herein refers to a manufactured web of directionally or randomly orientated fibers, excluding paper and products which are woven, knitted, tufted, stitch-bonded incorporating binding yarns or filaments, or felted by wet-milling, whether or not additionally needled. Nonwoven materials and processes for making them are known in the art. Generally, processes for making nonwoven materials comprise laying fibers onto a forming surface, which may comprise spunlaying, meltblowing, carding, airlaying, wetlaying, coform and combinations thereof. The fibers may be of natural or man-made origin and may be staple fibers or continuous filaments or be formed in situ.


Absorbent Structure (13)


The absorbent structure (13) herein comprises a supporting sheet (16) with an absorbent layer (17) of absorbent material (50). The absorbent material (50) comprises at least a superabsorbent polymer material and optionally a cellulosic material, such as a cellulose, e.g. pulp, or modified cellulose.


The absorbent structure (13) also comprises one or more adhesive material(s), further described below. The absorbent layer (17) is three dimensional and comprises a first substantially longitudinal channel (26) and a second substantially longitudinal channel (26) that are substantially free of said superabsorbent polymer material. Other materials may be present in said channels (26), as further described below, for example said one or more adhesive material(s) (40; 60).


The absorbent structure (13) and the absorbent layer (17) each have a longitudinal dimension and average length L, e.g. extending in the longitudinal dimension of the structure or layer and a transverse dimension and average width W, e.g. extending in the transverse dimension of the structure or layer. The absorbent structure (13) and the absorbent layer (17) each have a front region, being in use towards the front of the user, back region, being in use towards the back of the user, and therein between a crotch region, each extending the full transverse width of the structure/layer, and each having ⅓ of the average length of the structure/layer.


The absorbent structure (13) and the absorbent layer (17) each possess a central longitudinal axis X, a central transverse axis Y perpendicular to said central longitudinal axis X; said absorbent layer (17) and said absorbent structure (13) have each a pair of opposing longitudinal side edges extending in the longitudinal dimension of the structure or layer and a pair of opposing transverse edges (19), e.g. front transverse edge being in use towards the front of a user (wearer), and a back transverse edge being in use towards the back of a user. The longitudinal side edges (18) and/or transverse edges (19) of the absorbent structure (13) or absorbent layer (17) may be parallel respectively to the central longitudinal axis and/or central transverse axis respectively or one or more may be curvilinear, and for instance provide for a narrower transverse dimension in the crotch region. Typically the longitudinal side edges are mirror images of one another in the longitudinal X-axis.


The central longitudinal X-axis of the absorbent layer (17) delimits first and second longitudinal side portions (20) of the absorbent layer (17), respectively, referred herein as longitudinal side portions (20). Each of said longitudinal side portions is thus present in said front region, crotch region and back region, and hence, there is a first longitudinal portion's front region, and a second longitudinal portion's front region etc. In some embodiments herein, said longitudinal portions of the absorbent layer (17) are mirror images of one another in the X-axis of the layer.


The absorbent layer (17) comprises at least a first channel (26) and second channel (26) that are substantially free of (e.g. free of) said superabsorbent polymer particles, said channels (26) extending through the thickness (height) of the absorbent layer (17). (It should be understood that, accidentally, a small, negligible amount of superabsorbent polymer particles may be present in the channel, which does not contribute to the overall functionality). When the absorbent layer (17) comprises cellulosic or cellulose, in some embodiments the said first and second channels (26) are also free of such cellulosic/cellulose material.


The first channel (26) is present in said first longitudinal side portion of the absorbent layer (17) and the second channel (26) is present in said second longitudinal side portion of the absorbent layer (17).


The first and second channel (26) each extend substantially longitudinally, which means typically that each channel (26) extends more in the longitudinal dimension than in the transverse dimension, and typically at least twice as much in the longitudinal dimension than in the transverse dimension.


Thus, this includes channels (26) that are completely longitudinal and parallel to the longitudinal direction of said absorbent layer (17) (i.e. paralleled to said longitudinal-axis); and this includes channels (26) that may be curve, provided the radius of curvature is typically at least equal (optionally at least 1.5 or at least 2.0 times this average transverse dimension) to the average transverse dimension of the absorbent layer; and this includes channels (26) that are straight but under an angle of (e.g. from 5°) up to 30°, or for example up to 20°, or up to 10° with a line parallel to the longitudinal axis. This may also includes channels with an angle therein, provided said angle between two parts of a channel is at least 120°, at least 150°; and in any of these cases, provided the longitudinal extension of the channel is more than the transverse extension.


In some embodiments, there may be no completely or substantially transverse channels present in at least said crotch region, or no such channels at all.


Each of said first and second channels (26) may have an average width W′ that is least 4% of the average width W of said absorbent layer (17), or for example W′ is at least 7% of W; and/or for example and up to 25% of W, or up to 15% of W; and/or for example at least 5 mm; and for example up to 25 mm, or for example up to 15 mm.


Each of said first and second channels (26) may have an average length L′ which may for example be up to 80% of the average length L of said absorbent layer (17); if the channels (26) are only in the front region, or only in the crotch region, or only in the back region, L′ is for example up to 25% of L, or up to 20% of L, and/or L′ is for example at least 5% of L, or at least 10% of L; and/or L′ is for example at least 10 mm, or at least 20 mm; if the channels (26) extend in said crotch region and front region, and optionally the back region, L′ is for example up to 80% of L, or up to 70% of L, and/or L′ is for example at least 40% of L, or at least 50% of L. In case the channel is not parallel to the longitudinal axis, the length L′ of the channel is the length as measured by projection against the longitudinal axis.


The channels (26) may typically be so-called “permanent” channels (26). By permanent, it is meant that the integrity of the channels (26) is at least partially maintained both in the dry state and in the wet state, including during friction by the wearer thereon. The Wet Channel Integrity Test described below can be used to test if channels are permanent following wet saturation and to what extent.


Permanent channels (26) may be obtained by provision of one or more adhesive material that immobilize said absorbent material (50), and/or said channels (26), e.g. or said absorbent layer (17), and/or that immobilize said supporting sheet (16) into said channels (26), or part thereof. The absorbent cores (7) may comprise in particular permanent channels formed by bonding of the first supporting sheet (16) and second supporting sheet (16′) through the channels, as exemplarily shown in FIG. 7 and FIG. 13 for example. Typically, glue may be used to bond both supporting sheets through the channel, but it is possible to bond via other known means, for example ultrasonic bonding, or heat bonding. The supporting layers can be continuously bonded or intermittently bonded along the channels.


Indeed, the inventors observed that such channels provide for fast liquid acquisition which reduces risk of leakages. The permanent channels help to avoid saturation of the absorbent layer in the region of fluid discharge (such saturation increases the risk of leakages). Furthermore, the inventors surprisingly found that, in contrast to what would be expected, whilst decreasing the overall amount of superabsorbent polymer material in the absorbent structure is reduced (by providing channels free of such material), the fluid handling properties of the absorbent structure, or diaper, are improved. Permanent channels, also have the further advantages that in wet state the absorbent material cannot move within the core and remains in its intended position, thus providing better fit and fluid absorption.


For example, the inventors have compared the amount of AGM loss in a wet state according to the WAIIT test for a core having two absorbent layers with permanent channels as shown in FIG. 4A relative to a similar core with same amount of AGM and glue but having no channels.


In short, the WAIIT test determines the amount of non-immobilized absorbent particulate material amount in the cores in wet conditions. In this test, the absorbent core is wet to 73% capacity and is cut in its middle in the transversal direction and left to fall from a pre-determined height and loss of material is measured. Further information regarding the test can be found in US 2008/0312622 A1.


The results were that the core had a Wet Immobilization of 87% (StDev=5%) of AGM compared to a Wet Immobilization of 65% (StDev=5%) for the comparative core without channels. In this example the channels were made permanent by adhesive bonding of the two supporting sheets in the channels using two layers of thermoplastic fibrous adhesive (Fuller 1151 applied twice at 5 gsm) and one layer of hotmelt adhesive (Fuller 1358 applied at 5 gsm).


Wet Channel Integrity Test


This test is designed to check the integrity of a channel following wet saturation. The test can be performed directly on a absorbent structure or on a absorbent core containing the absorbent structure.

    • 1. The length (in millimeters) of the channel is measured in the dry state (if the channel is not straight, the curvilinear length through the middle of the channel is measured).
    • 2. The absorbent structure or core is then immersed in 5 liters of synthetic urine “Saline”, with a concentration of 9.00 g NaCl per 1000 ml solution prepared by dissolving the appropriate amount of sodium chloride in distilled water. The temperature of the solution must be 20+/−5° C.
    • 3. After 1 minute in the saline, the absorbent structure or core is removed and held vertically by one end for 5 seconds to drain, then extended flat on a horizontal surface with the garment-facing side down, if this side is recognizable. If the absorbent structure or core comprises stretch elements, the absorbent structure or core is pulled taut in both X and Y dimensions so that no contraction is observed. The extremes/edges of the absorbent structure or core are fixed to the horizontal surface, so that no contraction can happen.
    • 4. The absorbent structure or core is covered with a suitably weighted rigid plate, with dimensions as follows: length equal to the extended length of the absorbent structure or core, and width equal to the maximum absorbent structure or core width in the cross direction.
    • 5. A pressure of 18.0 kPa is applied for 30 seconds over the area of the rigid plate above mentioned. Pressure is calculated on the basis of overall area encompassed by the rigid plate. Pressure is achieved by placing additional weights in the geometric center of the rigid plate, such that the combined weight of the rigid plate and the additional weights result in a pressure of 18.0 kPa over the total area of the rigid plate.
    • 6. After 30 seconds, the additional weights and the rigid plate are removed.
    • 7. Immediately afterwards, the cumulative length of the portions of the channel which remained intact is measured (in millimeters; if the channel is not straight, the curvilinear length through the middle of the channel is measured). If no portions of the channel remained intact then the channel is not permanent.
    • 8. The percentage of integrity of the permanent channel is calculated by dividing the cumulative length of the portions of the channel which remained intact by the length of the channel in the dry state, and then multiplying the quotient by 100.


Advantageously, a permanent channel according to the disclosure has a percentage of integrity of at least 20%, or 30%, or 40%, or 50%, or 60, or 70%, or 80%, or 90% following this test.


As for example shown in FIGS. 5 and 9, one or more adhesive material(s) (60) may be present between said supporting sheet (16) and said absorbent layer (17), or parts thereof (e.g. herein referred to as, “second adhesive material”). For example, an adhesive material is applied to portions of said supporting sheet (16) that are to coincide with the channels (26), so that in said channels the supporting sheet can be bonded with said adhesive to the walls of the channel, or part thereof or to a further material, as described herein; and/or the adhesive may be applied to portions of the supporting sheet (16) that are to coincide with the absorbent material (50), to immobilize said material and avoid extensive migration thereof into said channels; the adhesive may be applied over substantially the whole surface area of the supporting sheet (16), e.g. substantially continuously and/or homogeneously. This may for example be a hotmelt adhesive applied by printing, slot coating or spraying.


In addition, or alternatively, the absorbent structure (13) may comprise one or more adhesive materials (40) applied on said absorbent layer (17) or part thereof, that is already supported by said supporting sheet (16), (herein referred to as “first adhesive material”) e.g. after said absorbent material (50) is combined with/deposited on said supporting sheet (16) to form an absorbent layer (17). This may for example be a thermoplastic fibrous adhesive, as described herein after. It some embodiments, this may be applied continuously over the absorbent layer (17), hence over the absorbent material (50) and in the channels (26), to immobilize the absorbent layer and to optionally also adhere the supporting sheet in said channel, as described above. This is for example shown in FIGS. 5 to 11.


It should be understood that the first and second adhesive material may be the same type of adhesive, for example as a thermoplastic hotmelt adhesive, for example as described below, the difference between the first and second then thus being the location where it is applied.


In some embodiments, said one or more adhesive material are at least present in the channels (26), for example at least said first adhesive material, or both said first and second adhesive material. It may thus be present on the longitudinal walls of the channels (26) (extending the height of the absorbent layer (17) and the length thereof). If the supporting sheet (16) material folds into said channels (26), or part thereof, e.g. the supporting sheet (16) has undulations into said channels (26) or part thereof, said undulations may be fixed to said walls or part thereof, to ensure the channels (26) are maintained (at least partially) during use. This is for example shown in FIGS. 10 and 11


The first and second channels (26) may be mirror images of one another with respect to the central longitudinal axis (X-axis) of the absorbent layer (17)/structure.


In some embodiment, and as for example shown in the Figures, there is no channel (26) that coincides with said longitudinal axis of said absorbent layer (17). The channels (26) may be spaced apart from one another over their whole longitudinal dimension. The smallest spacing distance D may for example be at least 5% of average transverse dimension W of layer, or for example at least 10% of W, or at least 15% of W; or for example may for example at least 5 mm, or for example at least 8 mm.


Furthermore, in order to reduce the risk of fluid leakages, the longitudinal main channels (26) typically do not extend up to any of the transverse edges (19) and/or longitudinal edges (18) of the absorbent layer (17), as for example shown in the Figures too. Typically, the smallest distance I between a channel (26) and the nearest longitudinal edge and corresponds to at least 5% of W, or for example to at least 10% of W. In some embodiments, the distance is for example at least 10 mm; the smallest distance F between a channel and the nearest transverse edge (19) of the absorbent layer (17) may for example be at least 5% of the average length L of the layer.


The absorbent structure may comprise only two channels, for example only in the front region, such as for example shown in FIGS. 2B, or for example in the central (crotch) region, and optionally extending into the front and/or back region, such as shown FIG. 2A.


The absorbent structure (13) may comprise more than two of such channels (26), for example at least 4, or at least 5 or at least 6. Some or all of these may be substantially parallel to one another, for example being all straight and completely longitudinally, and/or two or more or all may be mirror images of one another in the longitudinal axis, or two or more may be curved or angled and fore example mirror images of one another in the longitudinal axis, and two or more may be differently curved or straight, and for example mirror images of one another in the longitudinal axis. This is for example shown in FIGS. 3 A and 3B.


For example the front region of the absorbent layer (17) may comprise two or more channels (26), that are typically mirror images of one another in the longitudinal axis of the layer, and the crotch region may comprise two or more channels (26), that are typically mirror images of one another in the longitudinal axis of the layer, for example shown in FIG. 4A, and the latter may optionally extend into the front region and/or back region, with any of applicable dimensions and other characteristics described above. Optionally, further channel(s) may be present in the back region, for example two, such as fore example shown in FIG. 4B.


The first and second channels (26), and optionally further channels (26), may be positioned in said absorbent layer (17) such that there is a central longitudinal strip, coinciding with said longitudinal axis, which is free of any channels (26); said absorbent material (50) may be substantially continuously present in said strip. For example, said strip may have a minimum width D of at least 5% of W, or at least 10% of W, and/or for example at least 5 mm, or at least 10 mm or at least 15 mm, and/or even up to 40 mm.


In some embodiments, in said central longitudinal strip between two neighboring channels (26) the average basis weight of absorbent material (50), or of said superabsorbent polymer material, is at least 350, and for example up to 1000 grams per m2, or for example from 450 grams per m2, and for example up to 750 grams per m2.


In some embodiments, adjacent each first and second channel, and optionally adjacent said further channel(s), said absorbent material (50) is substantially continuously present.


The absorbent structure (13) typically comprises one or more further material(s) (e.g. a further material layer) to cover the absorbent layer (17), herein referred to as further material; for the avoidance of any doubt, this is not a layer consisting of an adhesive material, however the further material may be a layer comprising adhesive, for example on the surface that is to contact the absorbent layer (17) of the absorbent structure (13) herein. Thus, the further material may comprise on the surface to be placed adjacent said absorbent layer (17) of the absorbent structure (13), an adhesive material.


The resulting structure is herein referred to as “absorbent core (7)”. Examples thereof are shown in FIGS. 5 to 13.


This further material may be a further absorbent structure (13′), with a second absorbent layer (17′) and a second supporting sheet (16′), so that both absorbent layers (17, 17′) are sandwiched between said supporting sheets (16; 16′); this may be a further absorbent structure (13′) of the disclosure, with two or more channels (26′) as described herein, and for example shown in FIGS. 5, 6, 7, 8; or this may be a absorbent structure as described herein but without channels, such as for example shown in FIG. 9; and/or it may be an absorbent structure as described herein but without adhesive.


The second absorbent structure (13′) may be identical to the first absorbent structure (13), or they may both be absorbent structure with channels (26; 26′) of the disclosure, but they may be different, for example having different channels, different number of channels (such as for example shown in FIG. 8), different adhesive, different adhesive application or combinations thereof.


The channels (26), or some of those, of the first absorbent structure (13) and the channels (26′) of the second absorbent structure (13′), or some of those, may coincide and overlap with one another; e.g. completely or for example coincide only partially and overlap only partially; or some or all of the channels (26; 26′) may even not coincide and not overlap one another. In some embodiments they are about identical to one another and the channels (26) of one structure substantially completely coincide and overlap the channels (26) of another structure. This is for example shown in FIG. 12.


In some embodiments, the further material may be a part of the supporting sheet (16), which is folded over the absorbent layer (17) and then sealed along the peripheral edges, to enclose the absorbent layer (17).


In some embodiments, the further material is a further supporting sheet (16′), i.e. the absorbent structure (13) is covered with a further supporting sheet (16′), said absorbent layer then being sandwiched between the two supporting sheets.


In some embodiments, the further material may be an acquisition material layer (70) and/or an acquisition sheet (12), for example sealed to said supporting sheet (16). In some embodiments, the further material includes a further absorbent structure, e.g. any of those described above, or further supporting sheet (16′), and then combined with an acquisition material layer (70), and optionally a further acquisition sheet (12). This is for example shown in FIG. 11.


The further material may also be an acquisition material layer (70) present adjacent said absorbent layer (17), the acquisition material layer (70) optionally comprising chemically cross-linked cellulosic fibers, and the acquisition material layer being supported on a second supporting sheet (16′). The absorbent layer (17) and the acquisition material layer (70) may then be sandwiched between said supporting sheet (16) of the first structure and said second supporting sheet (16′), as exemplary shown in FIG. 12. The acquisition material layer (70) may also further comprise channels (26′), in particular substantially completely overlapping with the channels (26) of said first absorbent structure (13) as shown in FIG. 13.


The supporting sheet (16) of the first structure and/or the second supporting sheet (16′) of the acquisition material layer (70) may fold into the channels (26) of the first absorbent structure (13) and/or optionally into the channels (26′) of the acquisition material layer (70), if present, or part of these channels (26,26′). The one or more adhesive material(s) may be at least present in the channels (26, 26′), or part thereof, and the supporting sheets (16; 16′) may be adhered to one another in said channels (26, 26′) by one or more of these adhesive material(s). Another second adhesive (60′) may be present between the second supporting sheet (16′) and the acquisition material layer (70). Another adhesive (not represented) may be placed between the acquisition material layer (70) and the absorbent layer (17), in addition to the thermoplastic adhesive (40), to improve better adhesion of both layers.


In any of these cases, the further material, can then be sealed to the supporting sheet (16) along the peripheral edges thereof, to enclose the absorbent layer (s) (17; optionally 17′). In any of these cases the supporting sheet (16) or acquisition layer/sheet may fold into (i.e. undulate into) said channels (26) or part thereof. This is shown for example in FIGS. 6, 7, 8.


It may be adhered to the supporting sheet (16) of the absorbent structure (13) of the disclosure in said channels (26), e.g. by an adhesive material, as described herein. Alternatively, or in addition, it may be adhered to the walls of the channels (26 and/or 26′) or part thereof. In some embodiments the absorbent structure (13) comprises such a further material overlaying said absorbent layer (17), and a pressure means is applied selectively to said supporting sheet (16) and/or to said further material, in those parts that coincide with said channels (26 and/or 26′), to pressurize said supporting sheet (16) and/or said further material into said channels of the absorbent structure (13) and/or into the channels of a further (second) absorbent structure (13′) if present (so: into channels 26 and/or 26′, if present), to aid formulation of said undulations and/or to aid adhering of the further material and said supporting sheet (16) to one another in said channels (26 and/or 26′), if an adhesive material is present as described herein.


The pressure means may be a pressure roll with raised portions that have substantially the size, shape, pattern of said channels (26 and/or 26′), that that can coincide (i.e.: mate) with said parts of the supporting sheet (16) or further material coinciding with said channels (26 and/or 26′).


In some embodiments, the further (e.g. second) supporting sheet (16′) may be wider than the absorbent structure to enable the second supporting sheet (16′) to fold into the channels (26 and/or 26′) or part thereof, and thereby may adhere to the first supporting sheet (16). This is for example shown in FIGS. 6, 7 and 8.


In embodiments wherein the absorbent core (7) comprises two (or more) absorbent structures (13; 13′) comprising the channels (26; 26′), described herein, it may be that one or two, or more, or all, of the channels (26) of one absorbent structure (13) substantially superpose the channels (26′) of the adjacent absorbent structure (13′). The resulting absorbent core (7) is then a laminate of absorbent structures (13′; 13′) with channels (26; 26′), wherein the channels (26;26′) extend substantially through the thickness of the absorbent layers (17;17′). This is for example shown in FIG. 12.


In addition or alternatively, it may be that one or two, or more, or all, channels (26) of one absorbent structure (13) do not superpose the channels (26′) of the adjacent absorbent structure (13′); they may for example be complementary with the channels (26) of the adjacent structure. By complementary it is meant that the channels (26′) of the second absorbent structure (13′) form an extension of the channels (26) of the first absorbent structure (13).


In some embodiments, the absorbent core (7) may comprise two or more absorbent structure (13), one of which being the structure of the disclosure, and one being a absorbent structure (13) with a supporting sheet (16′) with thereon an absorbent layer (17′) (with superabsorbent polymer material) without channels and/or without adhesive.


If a second absorbent structure (13′) is present in the absorbent core (7), this may comprise one or more adhesives, in the manner as described above, and for the reasons described above.


For example, it may be present such that it coincides with the channels (26) of the first absorbent structure (13) at least, and/or with its channels (26′), if present.


Absorbent Material (50)


The absorbent layer (17) comprises absorbent material (50) that comprises superabsorbent polymer material (e.g. particles), optionally combined with cellulosic material (including for example cellulose, comminuted wood pulp in the form of fibers). The further material described above (e.g. a further, second absorbent structure (13′) may include an absorbent material, and the following may apply thereto too.


In some embodiment, the absorbent material (50) may comprise at least 60%, or at least 70% by weight of superabsorbent polymer material, and at the most 40% or at the most 30% of cellulosic material.


In some other embodiments, the absorbent layer (17) comprises absorbent material (50) that consists substantially of absorbent polymer material, e.g. particles, e.g. less than 5% by weight (of the absorbent material (50)) of cellulosic material is present; and said absorbent layer (17)/absorbent structure (13), may be free of cellulosic material.


Typically, the superabsorbent polymer material is in the form of particles. Suitable for use in the absorbent layer (17) can comprise any superabsorbent polymer particles known from superabsorbent literature, for example such as described in Modern Superabsorbent Polymer Technology, F. L. Buchholz, A. T. Graham, Wiley 1998. The absorbent polymer particles may be spherical, spherical-like or irregular shaped particles, such as Vienna-sausage shaped particles, or ellipsoid shaped particles of the kind typically obtained from inverse phase suspension polymerizations. The particles can also be optionally agglomerated at least to some extent to form larger irregular particles.


In some embodiments herein, the absorbent material (50) as a whole and/or said particulate superabsorbent polymer material at least, has a high sorption capacity, e.g. having a CRC of for example at least 20 g/g, or at 30 g/g. Upper limits may for example be up to 150 g/g, or up to 100 g/g.


In some embodiments herein, the absorbent material (50) comprising or consisting of superabsorbent polymer particles that are formed from polyacrylic acid polymers/polyacrylate polymers, for example having a neutralization degree of from 60% to 90%, or about 75%, having for example sodium counter ions.


The superabsorbent polymer may be polyacrylates and polyacrylic acid polymers that are internally and/or surface cross-linked. Suitable material are described in the PCT Patent Application WO 07/047598 or for example WO 07/046052 or for example WO2009/155265 and WO2009/155264. In some embodiments, suitable superabsorbent polymer particles may be obtained by current state of the art production processes as is more particularly as described in WO 2006/083584. The superabsorbent polymers may be internally cross-linked, i.e. the polymerization is carried out in the presence of compounds having two or more polymerizable groups which can be free-radically copolymerized into the polymer network. Useful crosslinkers include for example ethylene glycol dimethacrylate, diethylene glycol diacrylate, allyl methacrylate, trimethylolpropane triacrylate, triallylamine, tetraallyloxyethane as described in EP-A 530 438, di- and triacrylates as described in EP-A 547 847, EP-A 559 476, EP-A 632 068, WO 93/21237, WO 03/104299, WO 03/104300, WO 03/104301 and in DE-A 103 31 450, mixed acrylates which, as well as acrylate groups, include further ethylenically unsaturated groups, as described in DE-A 103 31 456 and DE-A 103 55 401, or crosslinker mixtures as described for example in DE-A 195 43 368, DE-A 196 46 484, WO 90/15830 and WO 02/32962 as well as cross-linkers described in WO2009/155265. The superabsorbent polymer particles may be externally surface cross-linked, or: post cross-linked). Useful post-crosslinkers include compounds including two or more groups capable of forming covalent bonds with the carboxylate groups of the polymers. Useful compounds include for example alkoxysilyl compounds, polyaziridines, polyamines, polyamidoamines, di- or polyglycidyl compounds as described in EP-A 083 022, EP-A 543 303 and EP-A 937 736, polyhydric alcohols as described in DE-C 33 14 019, cyclic carbonates as described in DE-A 40 20 780, 2-oxazolidone and its derivatives, such as N-(2-hydroxyethyl)-2-oxazolidone as described in DE-A 198 07 502, bis- and poly-2-oxazolidones as described in DE-A 198 07 992, 2-oxotetrahydro-1,3-oxazine and its derivatives as described in DE-A 198 54 573, N-acyl-2-oxazolidones as described in DE-A 198 54 574, cyclic ureas as described in DE-A 102 04 937, bicyclic amide acetals as described in DE-A 103 34 584, oxetane and cyclic ureas as described in EP-A 1 199 327 and morpholine-2,3-dione and its derivatives as described in WO 03/031482.


The superabsorbent polymers or particles thereof may have surface modifications, such as being coated or partially coated with a coating agent. Examples of coated absorbent polymer particles are disclosed in WO2009/155265. The coating agent may be such that it renders the absorbent polymer particles more hydrophilic. For example, it may be hydrophilic (i>e. fumed) silica, such as Aerosils. The coating agent may be a polymer, such as an elastic polymer or a film-forming polymer or an elastic film-forming polymer, which forms an elastomeric (elastic) film coating on the particle. The coating may be a homogeneous and/or uniform coating on the surface of the absorbent polymer particles. The coating agent may be applied at a level of from 0.1% to 5%.


The superabsorbent polymer particles may have a particle sizes in the range from 45 μm to 4000 μm, more specifically a particle size distribution within the range of from 45 μm to about 2000 μm, or from about 100 μm to about 1000 or to 850 μm. The particle size distribution of a material in particulate form can be determined as it is known in the art, for example by means of dry sieve analysis (EDANA 420.02 “Particle Size distribution).


In some embodiments herein, the superabsorbent material is in the form of particles with a mass medium particle size up to 2 mm, or between 50 microns and 2 mm or to 1 mm, or from 100 or 200 or 300 or 400 or 500 μm, or to 1000 or to 800 or to 700 μm; as can for example be measured by the method set out in for example EP-A-0691133. In some embodiments of the disclosure, the superabsorbent polymer material is in the form of particles whereof at least 80% by weight are particles of a size between 50 μm and 1200 μm and having a mass median particle size between any of the range combinations above. In addition, or in another embodiment of the disclosure, said particles are essentially spherical. In yet another or additional embodiment of the disclosure the superabsorbent polymer material has a relatively narrow range of particle sizes, e.g. with the majority (e.g. at least 80%, at least 90% or even at least 95% by weight) of particles having a particle size between 50 μm and 1000 μm, between 100 μm and 800 m, between 200 μm and 600 μm.


Supporting Sheet (16; 16′)


The absorbent structure (13) herein comprises a supporting sheet (16) on which said absorbent material (50) is supported and immobilized. The further material may be or include a supporting sheet (16′), and the following applies also to such a sheet (16′).


This supporting sheet (16) may be an individual sheet or a web material that is subsequently divided in to individual absorbent structure (13)s, in particular paper, films, wovens or nonwovens, or laminate of any of these.


In some embodiments herein, the supporting sheet (16) is a nonwoven, e.g. a nonwoven web, such as a carded nonwoven, spunbond nonwoven or meltblown nonwoven, and including nonwoven laminates of any of these.


The fibers may be of natural or man-made origin and may be staple or continuous filaments or be formed in situ. Commercially available fibers have diameters ranging typically from less than about 0.001 mm to more than about 0.2 mm and they come in several different forms: short fibers (known as staple, or chopped), continuous single fibers (filaments or monofilaments), untwisted bundles of continuous filaments (tow), and twisted bundles of continuous filaments (yarn). The fibers may be bicomponent fibers, for example having a sheet-core arrangement, e.g. with different polymers forming the sheet and the core. Nonwoven fabrics can be formed by many processes such as meltblowing, spunbonding, solvent spinning, electrospinning, and carding. The basis weight of nonwoven fabrics is usually expressed in grams per square meter (gsm).


The nonwoven herein may be made of hydrophilic fibers; “Hydrophilic” describes fibers or surfaces of fibers, which are wettable by aqueous fluids (e.g. aqueous body fluids) deposited on these fibers. Hydrophilicity and wettability are typically defined in terms of contact angle and the strike through time of the fluids, for example through a nonwoven fabric. This is discussed in detail in the American Chemical Society publication entitled “Contact angle, wettability and adhesion”, edited by Robert F. Gould (Copyright 1964). A fiber or surface of a fiber is said to be wetted by a fluid (i.e. hydrophilic) when either the contact angle between the fluid and the fiber, or its surface, is less than 90°, or when the fluid tends to spread spontaneously across the surface of the fiber, both conditions are normally co-existing. Conversely, a fiber or surface of the fiber is considered to be hydrophobic if the contact angle is greater than 90° and the fluid does not spread spontaneously across the surface of the fiber.


The supporting sheet (16) herein may be air-permeable. Films useful herein may therefore comprise micro pores. Nonwovens herein may for example be air permeable. The supporting sheet (16) may have for example an air-permeability of from 40 or from 50, to 300 or to 200 m3/(m2×min), as determined by EDANA method 140-1-99 (125 Pa, 38.3 cm2). The supporting sheet (16) may alternatively have a lower air-permeability, e.g. being non-air-permeable, to for example be better detained on a moving surface comprising vacuum.


In some executions, the supporting sheet (16) is a nonwoven laminate material, a nonwoven laminate web, for example of the SMS or SMMS type.


In order to form easily said undulations, the supporting sheet (16) may have a basis weight that is less than 60 gsm, or for example than 50 gsm, for example from 5 gsm to 40 gsm, or to 30 gsm.


The supporting sheet (16) may have a CD-extensibility or a MD-extensibility.


In one of the embodiment herein, the supporting sheet (16) has undulations that fold (undulate) into said first and second channels (26), and optionally in to said further channel(s), of part thereof. For example the undulations may extend over about the full longitudinal dimension of the channel; they may for example extend to complete average height of the absorbent layer (17)/channel, or for example only up to 75% thereof, or up to 50% of the average height of the absorbent layer (17)/channel. This aids immobilization of the absorbent material (50) adjacent said channels (26) and said channels (26) of said layers.


The undulations may be adhered with said one or more adhesive material, e.g. said second adhesive material, to said walls of said channels (26). The supporting sheet (16) may alternatively, or in addition, be adhered in said channels (26) to said further material, e.g. second supporting sheet (16), describe herein above, e.g. with said first and/or second adhesive.


Adhesive Material


The absorbent structure (13) may comprise one or more adhesive material. In some embodiments, it comprises a first adhesive material and/or a second adhesive material, as described above, and in the manner described above.


The absorbent core herein may comprise a further second absorbent structure (13′) that may comprise one or more adhesive materials; the following equally applies thereto.


Any suitable adhesive can be used for this, for example so-called hotmelt adhesives used. For example, a sprayable hot melt adhesives, such as H.B. Fuller Co. (St. Paul, Minn.) Product No. HL-1620-B, can be used.


The adhesive material(s) may not only help in immobilizing the absorbent material on the supporting sheet but it may also help in maintaining the integrity of the channels in the absorbent structure absorbent core during storage and/or during use of the disposable article. The adhesive material may help to avoid that a significant amount of absorbent material migrates into the channels. Furthermore, when the adhesive material is applied in the channels or on the supporting sheet portions coinciding with the channels it may thereby help to adhere the supporting sheet of the absorbent structure to said walls, and/or to a further material, as will be described in further details below.


In some embodiments, the first adhesive (40) and/or the second adhesive (60) may be a thermoplastic adhesive material.


In some embodiments, the first adhesive (40) may be applied as fibers, forming a fibrous network that immobilizes the absorbent material on the supporting sheet. The thermoplastic adhesive fibers may be partially in contact with the supporting sheet of the absorbent structure; if applied also in the channels, it (further) anchors the absorbent layer to the supporting sheet. The thermoplastic adhesive material may for example allow for such swelling, without breaking and without imparting too many compressive forces, which would restrain the absorbent polymer particles from swelling. Thermoplastic adhesive materials (40; 60) suitable for use in the present disclosure includes hot melt adhesives comprising at least a thermoplastic polymer in combination with a plasticizer and other thermoplastic diluents such as tackifying resins and additives such as antioxidants. Exemplary suitable hot melt adhesive materials (40; 60) are described in EP 1447067 A2. In some embodiments, the thermoplastic polymer has a molecular weight (Mw) of more than 10,000 and a glass transition temperature (Tg) below room temperature or −6° C.>Tg<16° C. In certain embodiments, the concentrations of the polymer in a hot melt are in the range of about 20 to about 40% by weight. In certain embodiments, thermoplastic polymers may be water insensitive. Exemplary polymers are (styrenic) block copolymers including A-B-A triblock structures, A-B diblock structures and (A-B)n radial block copolymer structures wherein the A blocks are non-elastomeric polymer blocks, typically comprising polystyrene, and the B blocks are unsaturated conjugated diene or (partly) hydrogenated versions of such. The B block is typically isoprene, butadiene, ethylene/butylene (hydrogenated butadiene), ethylene/propylene (hydrogenated isoprene), and mixtures thereof.


Other suitable thermoplastic polymers that may be employed are metallocene polyolefins, which are ethylene polymers prepared using single-site or metallocene catalysts. Therein, at least one comonomer can be polymerized with ethylene to make a copolymer, terpolymer or higher order polymer. Also applicable are amorphous polyolefins or amorphous polyalphaolefins (APAO) which are homopolymers, copolymers or terpolymers of C2 to C8 alpha olefins.


The thermoplastic adhesive material, typically a hot-melt adhesive material, is generally present in the form of fibres, i.e. the hot melt adhesive can be fiberized. In some embodiments, the thermoplastic adhesive material forms a fibrous network over the absorbent polymer particles. Typically, the fibres can have an average thickness from about 1 μm to about 100 μm, or from about 25 μm to about 75 μm, and an average length from about 5 mm to about 50 cm. In particular the layer of hot melt adhesive material can be provided such as to comprise a net-like structure. In certain embodiments the thermoplastic adhesive material is applied at an amount of from 0.5 to 30 g/m2, or from 1 to 15 g/m2, or from 1 and 10 g/m2 or even from 1.5 and 5 g/m2 per supporting sheet (16).


A typical parameter for an adhesive suitable for use in the present disclosure can be a loss angle tan Delta at 60° C. of below the value of 1, or below the value of 0.5. The loss angle tan Delta at 60° C. is correlated with the liquid character of an adhesive at elevated ambient temperatures. The lower tan Delta, the more an adhesive behaves like a solid rather than a liquid, i.e. the lower its tendency to flow or to migrate and the lower the tendency of an adhesive superstructure as described herein to deteriorate or even to collapse over time. This value is hence particularly important if the absorbent article is used in a hot climate.


It may be beneficial, e.g. for process reasons and/or performance reasons, that the thermoplastic adhesive material has a viscosity of between 800 and 4000 mPa·s, or from 1000 mPa·s or 1200 mPa·s or from 1600 mPa·s to 3200 mPa·s or to 3000 mPa·s or to 2800 mPa·s or to 2500 mPa·s, at 175° C., as measurable by ASTM D3236-88, using spindle 27, 20 pmp, 20 minutes preheating at the temperature, and stirring for 10 min.


The thermoplastic adhesive material may have a softening point of between 60° C. and 150° C., or between 75° C. and 135° C., or between 90° C. and 130° C., or between 100° C. and 115° C., as can be determined with ASTM E28-99 (Herzog method; using glycerine).


In one embodiment herein, the thermoplastic adhesive component may be hydrophilic, having a contact angle of less than 90°, or less than 80° or less than 75° or less than 70°, as measurable with ASTM D 5725-99.


Absorbent Articles, e.g. Diapers


The absorbent structure (13) or absorbent core (7) herein may be useful in n absorbent articles, such as described above, and in particular in a diaper (1), including fastenable diapers (1) and (refastenable) training pants, for infants or for adults, or in an absorbent pad, such as a sanitary napkin or adult incontinence undergarment pad.


The article may comprise, in addition to an absorbent structure (13) or absorbent core (7) as described herein, a topsheet and backsheet, and for example one or more side flaps or cuffs (10). The topsheet or cuffs or side flaps may comprise a skin care composition or lotion or powder, known in the art, panels, including those described in U.S. Pat. Nos. 5,607,760; 5,609,587; 5,635,191; 5,643,588.


Articles herein comprise a topsheet, facing the wearer in use, for example a nonwoven sheet, and/or an apertured sheet, including apertured formed films, as known in the art, and a backsheet. The backsheet may be liquid impervious, as known in the art. In some embodiments, the liquid impervious backsheet comprises a thin plastic film such as a thermoplastic film having a thickness of about 0.01 mm to about 0.05 mm. Suitable backsheet materials comprise typically breathable material, which permit vapors to escape from the diaper (1) while still preventing exudates from passing through the backsheet. Suitable backsheet films include those manufactured by Tredegar Industries Inc. of Terre Haute, Ind. and sold under the trade names X15306, X10962 and X10964.


The backsheet, or any portion thereof, may be elastically extendable in one or more directions. The backsheet may be attached or joined to a topsheet, the absorbent structure/core, or any other element of the diaper (1) by any attachment means known in the art.


Diapers herein may comprise leg cuffs and/or barrier cuffs; the article then typically has a pair of opposing side flaps and/or leg and/or barrier cuffs, each of a pair being positioned adjacent one longitudinal side of the absorbent structure/core, and extending longitudinally along said structure/core, and typically being mirror images of one another in the longitudinal-axis of the article; if leg cuffs and barrier cuffs are present, then each leg cuffs is typically positioned outwardly from a barrier cuff. The cuffs (10) may be extending longitudinally along at least 70% of the length of the article. The cuff(s) may have a free longitudinal edge that can be positioned out of the X-Y plane (longitudinal/transverse directions) of the article, i.e. in z-direction. The side flaps or cuffs of a pair may be mirror images of one another in the longitudinal axis of the article. The cuffs may comprise elastic material (11).


The diapers herein may comprise a waistband, or for example a front waistband and back waist band, which may comprise elastic material.


The diaper (1) may comprise side panels, or so-called ear panels. The diaper (1) may comprise fastening means, to fasten the front and back, e.g. the front and back waistband. Fastening systems (8) may comprise fastening tabs and landing zones (9), wherein the fastening tabs are attached or joined to the back region of the diaper (1) and the landing zones are part of the front region of the diaper (1).


The absorbent structure (13) may be combined with, and the absorbent core (7) or diaper (1) may comprise, an acquisition layer (12) and/or acquisition material layer (70), or system thereof this may comprise chemically cross-linked cellulosic fibers. Such cross-linked cellulosic fibers may have desirable absorbency properties. Exemplary chemically cross-linked cellulosic fibers are disclosed in U.S. Pat. No. 5,137,537. In certain embodiments, the chemically cross-linked cellulosic fibers are cross-linked with between about 0.5 mole % and about 10.0 mole % of a C2 to C9 polycarboxylic cross-linking agent or between about 1.5 mole % and about 6.0 mole % of a C2 to C9 polycarboxylic cross-linking agent based on glucose unit. Citric acid is an exemplary cross-linking agent. In other embodiments, polyacrylic acids may be used. Further, according to certain embodiments, the cross-linked cellulosic fibers have a water retention value of about 25 to about 60, or about 28 to about 50, or about 30 to about 45. A method for determining water retention value is disclosed in U.S. Pat. No. 5,137,537. According to certain embodiments, the cross-linked cellulosic fibers may be crimped, twisted, or curled, or a combination thereof including crimped, twisted, and curled.


In a certain embodiment, one or both of the upper and lower acquisition layers may comprise a non-woven, which may be hydrophilic. Further, according to a certain embodiment, one or both of the upper and lower acquisition layers may comprise the chemically cross-linked cellulosic fibers, which may or may not form part of a nonwoven material. According to an exemplary embodiment, the upper acquisition layer may comprise a nonwoven, without the cross-linked cellulosic fibers, and the lower acquisition layer may comprise the chemically cross-linked cellulosic fibers. Further, according to an embodiment, the lower acquisition layer may comprise the chemically cross-linked cellulosic fibers mixed with other fibers such as natural or synthetic polymeric fibers. According to exemplary embodiments, such other natural or synthetic polymeric fibers may include high surface area fibers, thermoplastic binding fibers, polyethylene fibers, polypropylene fibers, PET fibers, rayon fibers, lyocell fibers, and mixtures thereof. Suitable non-woven materials for the upper and lower acquisition layers include, but are not limited to SMS material, comprising a spunbonded, a melt-blown and a further spunbonded layer. In certain embodiments, permanently hydrophilic non-wovens, and in particular, nonwovens with durably hydrophilic coatings are desirable. Another suitable embodiment comprises a SMMS-structure. In certain embodiments, the non-wovens are porous.


The diaper (1) may include a sub-layer disposed between the topsheet and the absorbent structure (13)/absorbent core (7), capable of accepting, and distributing and/or immobilizing bodily exudates. Suitable sublayers include acquisition layers, surge layers and or fecal material storage layers, as known in the art. Suitable materials for use as the sub-layer may include large cell open foams, macro-porous compression resistant non woven highlofts, large size particulate forms of open and closed cell foams (macro and/or microporous), highloft non-wovens, polyolefin, polystyrene, polyurethane foams or particles, structures comprising a multiplicity of vertically oriented, looped, strands of fibers, or apertured formed films, as described above with respect to the genital coversheet. (As used herein, the term “microporous” refers to materials that are capable of transporting fluids by capillary action, but having a mean pore size of more than 50 microns. The term “macroporous” refers to materials having pores too large to effect capillary transport of fluid, generally having pores greater than about 0.5 mm (mean) in diameter and more specifically, having pores greater than about 1.0 mm (mean) in diameter, but typically less than 10 mm or even less than 6 mm (mean).


Processes for assembling the absorbent article or diaper (1) include conventional techniques known in the art for constructing and configuring disposable absorbent articles. For example, the backsheet and/or the topsheet can be joined to the absorbent structure/core or to each other by a uniform continuous layer of adhesive, a patterned layer of adhesive, or an array of separate lines, spirals, or spots of adhesive. Adhesives which have been found to be satisfactory are manufactured by H. B. Fuller Company of St. Paul, Minn. under the designation HL-1258 or H-2031. While the topsheet, the backsheet, and the absorbent structure (13)/core may be assembled in a variety of well-known configurations, diaper (1) configurations are described generally in U.S. Pat. No. 5,554,145 entitled “Absorbent Article With Multiple Zone Structural Elastic-Like Film Web Extensible Waist Feature” issued to Roe et al. on Sep. 10, 1996; U.S. Pat. No. 5,569,234 entitled “Disposable Pull-On Pant” issued to Buell et al. on Oct. 29, 1996; and U.S. Pat. No. 6,004,306 entitled “Absorbent Article With Multi-Directional Extensible Side Panels” issued to Robles et al. on Dec. 21, 1999.


Method of Making the Absorbent Structure (13)


The absorbent structure (13) herein may be made by any method comprising the step of depositing absorbent material (50) onto a supporting sheet (16), for example by pacing first said supporting sheet (16) onto raised portions in the shape and dimensions of said channels (26) to be produced and then depositing said absorbent material (50) thereon; thereby, the absorbent material (50) does not remain onto said raised portions, but only on the remaining portions of the supporting sheet (16).


In some embodiments, the absorbent structure (13) with the absorbent layer (17) with therein two or more channels (26) with substantially no absorbent material (50) is for example obtainable by a method comprising the steps of:

    • a) providing a feeder for feeding said absorbent material (50) to a first moving endless surface, such as a hopper;
    • b) providing a transfer means for transferring a supporting sheet (16) to a second moving endless surface;
    • c) providing a first moving endless surface, having one or more absorbent layer (17)-forming reservoirs with a longitudinal dimension and averaged length, a perpendicular transverse dimension and average width, and, perpendicular to both, a depth dimension and average depth, and a void volume for receiving said absorbent material (50) therein, said reservoir(s) comprising one or more substantially longitudinally extending raised strips, not having a void volume, for example each having an average width W of at least 4% or at least 5% of the average width of the reservoir, and an average length L of at least 5% and at the most 30% of the average longitudinal dimension of the reservoir; said reservoir(s) being for transferring said absorbent material (50) to said second moving endless surface adjacent and in proximity thereto
    • d) providing a second moving surface, having an outer shell that has one or more air permeable or partially air permeable receptacles with for receiving said supporting sheet (16) thereon or therein, with a receiving area and with one or more substantially longitudinally extending mating strips that may be air impermeable, and having each an average width of for example W′ of at least 2.5 mm, from 0.5×W to 1.2×W, an average length of for example L′ being from about 0.8×L to 1.2×L;


whereby said air-permeable outer shell is connected to one or more secondary vacuum systems for facilitating retention of supporting sheet (16) and/or said absorbent material (50) thereon, and


whereby, in a meeting point, said first moving endless surface and said outer shell are at least partially adjacent to one another and in close proximity of one another during transfer of said absorbent material (50) and such that each mating strip is substantially completely adjacent and in close proximity to a raised strip during transfer of said absorbent material (50);

    • e) feeding with said feeder an absorbent material (50) to said first moving endless surface, in at least said reservoir (s) thereof;
    • f) optionally, removing any absorbent material (50) on said raised strips (s);
    • g) simultaneously, transferring said supporting sheet (16) to said second moving endless surface, onto or into said receptacle(s);
    • h) selectively transferring in said meeting point, said absorbent material (50) with said first moving endless surface only to said part of the supporting sheet (16) that is on or in said receiving area of said receptacle; and
      • i) 1) applying an adhesive material (i.e. a first adhesive material (40)) to said absorbent structure (13) of step g; and/or
      • i) 2) applying an adhesive material (i.e. a second adhesive material (60)) to said supporting sheet (16), prior or step f, or simultaneously therewith, but in any event prior to step g).


Step i) 1) may involve spraying said first adhesive material in the form of fibers onto said absorbent layer (17), or part thereof, for example substantially continuously, so it is also present in said channels (26).


Step i) 2) may involve slot coating or spray-coating the supporting sheet (16), either continuously, or for example in a pattern corresponding to the channel (26) pattern.


Said reservoir(s) may be formed by of a multitude of grooves and/or cavities with a void volume, for receiving said absorbent material (50) therein. In some embodiments, the average width W of (each) strip may be at least 6 mm, or for example at least 7 mm, and/or at least at least 7%, or for example at least 10% of the average width of the respective reservoir.


Said grooves and/or cavities may each for example have a maximum dimension in transverse direction which is at least 3 mm, and whereby the shortest distance between directly neighboring cavities and/or grooves in substantially transverse dimension, is less than 5 mm. Cavities and/or grooves that are directly adjacent a raised strip may have a volume that is more than the volume of one or more, or all of their neighboring cavities or grooves, that are not directly adjacent said strip or another strip (thus further removed from a strip).


Said first moving endless surface's reservoir may be at least partially air permeable and said first moving endless surface may have a cylindrical surface with said reservoirs, rotatably moving around a stator, comprising a vacuum chamber; said second moving surface's outershell may be cylindrical, rotatably moving around a stator, comprising a secondary vacuum chamber connected to said secondary vacuum system.


The method may be to produce an absorbent core (7) or structure that comprises two or more of the above described absorbent structures (13;13′); for example two such layers, superposed on one another such that the absorbent material (50) of a first layer and the absorbent material (50) of the other second layer are adjacent one another and sandwiched between the supporting sheet (16) of the first layer and the supporting sheet (16) of the second layer.


The method may involve the provision of a pressure means, such as a pressure roll, that can apply pressure onto the absorbent structure (13), and typically an absorbent structure (13) whereby the absorbent material (50) is sandwiched between the supporting sheet (16) a further material; the pressure may be applied onto said supporting sheet (16) or on any of the further material/layer that placed over the absorbent layer (17), as described above in this section. This pressure application may be done to selectively apply pressure only onto the channels (26 and/or 26′) of the absorbent structure (13), e.g. on the portions of the supporting sheet (16) that correspond to the channels (26), and that thus not comprise (on the opposed surface) absorbent material (50), to avoid compaction of said absorbent material (50) itself and/or on the portions of the further material, e.g. the supporting sheet (16′) thereof, that correspond to the channels (26′), and that thus not comprise (on the opposed surface) absorbent material (50), to avoid compaction of said absorbent material (50) itself.


Thus, the pressure means may have a raised pressuring pattern corresponding to said pattern of the raised strip(s) and/or of said mating strip(s), in some corresponding to the pattern of the mating strip(s).


The dimensions and values disclosed herein are not to be understood as being strictly limited to the exact numerical values recited. Instead, unless otherwise specified, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as “40 mm” is intended to mean “about 40 mm.”


Every document cited herein, including any cross referenced or related patent or application, is hereby incorporated herein by reference in its entirety unless expressly excluded or otherwise limited. The citation of any document is not an admission that it is prior art with respect to any invention disclosed or claimed herein or that it alone, or in any combination with any other reference or references, teaches, suggests or discloses any such invention. Further, to the extent that any meaning or definition of a term in this document conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to that term in this document shall govern.


While particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.

Claims
  • 1. A method of making an absorbent structure for an absorbent article, the absorbent structure comprising: a supporting sheet and an absorbent layer supported thereon, the absorbent layer comprising an absorbent material that comprises at least a superabsorbent polymer material;the absorbent structure and the absorbent layer having a longitudinal dimension and an average length, a transverse dimension and an average width, a height, and front, back and crotch regions arranged sequentially in the longitudinal dimension, the absorbent layer also having a longitudinal axis and perpendicular thereto a transverse axis;the absorbent layer having a first longitudinally extending side portion on one side of the longitudinal axis, and a second longitudinally extending side portion on the other side of the longitudinal axis;wherein the absorbent layer has at least a first channel present in the first side portion, and a second channel present in the second side portion, the channels being substantially free of the superabsorbent polymer material, and extending through the height of the absorbent layer; andwherein the absorbent structure comprises one or more adhesive materials to at least partially immobilize the absorbent layer onto the supporting sheet,wherein the method comprises:placing the supporting sheet onto raised portions with a shape and dimensions corresponding to the first and second channels, such that the supporting sheet is provided with raised portions and remaining portions;depositing the absorbent material onto the supporting sheet, wherein the absorbent material does not remain on the raised portions of the supporting sheet, but remains only on the remaining portions of the supporting sheet; andapplying a pressure to the supporting sheet of the absorbent structure, the pressure being applied selectively to the portions of the supporting sheet that correspond to the channels, to thereby fold the supporting sheet into the channels.
  • 2. The method according to claim 1, wherein the absorbent material comprises cellulosic material.
  • 3. The method according to claim 1, wherein the absorbent layer of the absorbent structure has a pair of longitudinal side edges, a transverse front edge and a transverse back edge, and wherein the channels do not extend to any of the edges.
  • 4. The method according to claim 1, wherein the absorbent layer of the absorbent structure further comprises a further material overlying the absorbent layer, and wherein the pressure is applied to the supporting sheet and the further material of the absorbent structure, the pressure means being applied selectively to the parts that correspond to the channels, to thereby pressurize the supporting sheet and the further material into the channels.
  • 5. The method according to claim 1, wherein the pressure means is a pressure roll with raised portions that have substantially the size, shape and pattern of the channels, such that the raised portions coincide with the parts that correspond to the channels.
  • 6. The method according to claim 1, wherein the pressure is applied selectively only to the parts that correspond to the channels, such that compaction of the absorbent material is avoided.
  • 7. The method according to claim 1, wherein the first and second channels are curved or angled and are mirror images of one another in the longitudinal axis.
  • 8. The method according to claim 1, wherein the one or more adhesive materials of the absorbent structure comprises a first adhesive material applied to the absorbent layer or part thereof, once the layer is present on the supporting sheet.
  • 9. The method according to claim 8, wherein the one or more adhesive materials of the absorbent structure comprises a second adhesive material present between the supporting sheet and the absorbent layer.
  • 10. The method according to claim 9, wherein the second adhesive material that is applied to the supporting sheet or part thereof, prior to deposition of the absorbent layer or absorbent material thereof onto the supporting sheet.
  • 11. The method according to claim 1, wherein the one or more adhesive materials of the absorbent structure are present in the channels, and wherein the supporting sheet folds into the channels, or part thereof, and wherein the supporting sheet is adhered to the absorbent material that forms the substantially longitudinal walls of the channels, or part of the walls.
  • 12. The method of claim 1, wherein the absorbent structure comprises a further supporting sheet present adjacent the absorbent layer.
  • 13. The method according to claim 12, wherein the channels are formed by bonding of the supporting sheet and the further supporting sheet through the channels, wherein the bonding through the channels is selected from glue, ultrasonics, or heat bonding, and wherein the channels of the absorbent structure are at least partially maintained both in the dry state and in the wet state.
  • 14. The method according to claim 1, wherein each of the channels of the absorbent structure has a percentage of integrity of at least 20%, measured following the Wet Channel Integrity test.
  • 15. The method according to claim 1, wherein each of the channels has an average width of from about 4% to about 25% of the average width of the absorbent layer, and wherein each of the channels has an average length of from about 5% to about 80% of the average length of the absorbent layer.
  • 16. A method of making a diaper comprising an absorbent structure, the absorbent structure comprising: a supporting sheet and an absorbent layer supported thereon, the absorbent layer comprising an absorbent material that comprises at least a superabsorbent polymer material;the absorbent structure and the absorbent layer having a longitudinal dimension and an average length, a transverse dimension and an average width, a height, and front, back and crotch regions arranged sequentially in the longitudinal dimension, the absorbent layer also having a longitudinal axis and perpendicular thereto a transverse axis;the absorbent layer having a first longitudinally extending side portion on one side of the longitudinal axis, and a second longitudinally extending side portion on the other side of the longitudinal axis;wherein the absorbent layer has at least a first channel present in the first longitudinally extending side portion, and a second channel present in the second longitudinally extending side portion, the channels being substantially free of the superabsorbent polymer material, and extending through the height of the absorbent layer, andwherein the absorbent structure comprises one or more adhesive materials to at least partially immobilize the absorbent layer onto the supporting sheet,wherein the method comprises:placing the supporting sheet onto raised portions with a shape and dimensions corresponding to the first and second channels, such that the supporting sheet is provided with raised portions and remaining portions;depositing the absorbent material onto the supporting sheet, wherein the absorbent material does not remain on the raised portions of the supporting sheet, but remains only on the remaining portions of the supporting sheet, wherein the absorbent layer of the absorbent structure has a pair of longitudinal side edges, a transverse front edge and a transverse back edge, and wherein the channels do not extend up to any of the edges;applying a pressure to the supporting sheet of the absorbent structure, the pressure being applied selectively to the portions of the supporting sheet that correspond to the channels, to thereby fold the supporting sheet into the channels, andassembling the absorbent structure into a diaper.
  • 17. The method according to claim 16, wherein the absorbent material comprises a cellulosic material.
  • 18. The method according to claim 16, wherein each of the channels has an average width of from about 4% to about 25% of the average width of the absorbent layer, and wherein each of the channels has an average length of from about 5% to about 80% of the average length of the absorbent layer.
  • 19. The method according to claim 16 wherein the one or more adhesive materials of the absorbent structure comprises a first adhesive material applied to the absorbent layer or part thereof, once the layer is present on the supporting sheet, and a second adhesive material present between the supporting sheet and the absorbent layer, applied to the supporting sheet or part thereof prior to deposition of the absorbent layer or the absorbent material thereof onto the supporting sheet.
CROSS REFERENCE TO RELATED APPLICATION

This application is a continuation application of U.S. application Ser. No. 16/541,267, filed on Aug. 15, 2019; which is a continuation application of U.S. application Ser. No. 15/887,341, filed on Feb. 2, 2018, now issued as U.S. Pat. No. 11,135,105 on Oct. 5, 2021; which is a continuation application of U.S. application Ser. No. 13/491,642, filed on Jun. 8, 2012, now issued as U.S. Pat. No. 10,561,546 on Feb. 18, 2020; which claims the benefit of U.S. Provisional Application Ser. No. 61/495,401, filed Jun. 10, 2011, all of which are hereby incorporated by reference in their entirety.

US Referenced Citations (1141)
Number Name Date Kind
1733997 Marr Oct 1929 A
1734499 Marinsky Nov 1929 A
1989283 Limacher Jan 1935 A
2058509 Rose Oct 1936 A
2271676 Bjornbak Feb 1942 A
2450789 Frieman Oct 1948 A
2508811 Best et al. May 1950 A
2568910 Condylis Sep 1951 A
2570796 Gross Oct 1951 A
2570963 Mesmer Oct 1951 A
2583553 Faure Jan 1952 A
2705957 Mauro Apr 1955 A
2788003 Morin Apr 1957 A
2788786 Dexter Apr 1957 A
2798489 Behrman Jul 1957 A
2807263 Newton Sep 1957 A
2830589 Doner Apr 1958 A
2890700 Lonberg-holm Jun 1959 A
2890701 Mary Jun 1959 A
2898912 Adams Aug 1959 A
2931361 Sostrin Apr 1960 A
2977957 Clyne Apr 1961 A
3071138 Garcia Jan 1963 A
3180335 Duncan et al. Apr 1965 A
3207158 Kazuko et al. Sep 1965 A
3227160 Younger Jan 1966 A
3343543 Glassman Sep 1967 A
3386442 Reinhardt Jun 1968 A
3561446 Jones, Sr. Feb 1971 A
3572342 Lindquist Mar 1971 A
3572432 Aulick Mar 1971 A
3575174 Mogor Apr 1971 A
3578155 Small et al. May 1971 A
3606887 Roeder Sep 1971 A
3610244 Jones, Sr. Oct 1971 A
3618608 Brink Nov 1971 A
3642001 Sabee Feb 1972 A
3653381 Warnken Apr 1972 A
3670731 Harmon Jun 1972 A
3688767 Goldstein Sep 1972 A
3710797 Marsan Jan 1973 A
3731688 Litt et al. May 1973 A
3756878 Willot Sep 1973 A
3774241 Zerkle Nov 1973 A
3776233 Schaar Dec 1973 A
3814100 Nystrand Jun 1974 A
3828784 Zoephel Aug 1974 A
3840418 Sabee Oct 1974 A
3847702 Jones Nov 1974 A
3848594 Buell Nov 1974 A
3848595 Endres Nov 1974 A
3848597 Endres Nov 1974 A
3860003 Buell Jan 1975 A
3863637 Macdonald et al. Feb 1975 A
3882870 Hathaway May 1975 A
3884234 Taylor May 1975 A
3900032 Heurlen Aug 1975 A
3911173 Sprague, Jr. Oct 1975 A
3920017 Karami Nov 1975 A
3924626 Lee et al. Dec 1975 A
3926189 Taylor Dec 1975 A
3929134 Karami Dec 1975 A
3929135 Thompson Dec 1975 A
3930501 Schaar Jan 1976 A
3938523 Gilliland et al. Feb 1976 A
3968799 Schrading Jul 1976 A
3978861 Schaar Sep 1976 A
3981306 Krusko Sep 1976 A
3987794 Schaar Oct 1976 A
3995637 Schaar Dec 1976 A
3995640 Schaar Dec 1976 A
3999547 Hernandez Dec 1976 A
4014338 Schaar Mar 1977 A
4034760 Amirsakis Jul 1977 A
4055180 Karami Oct 1977 A
4059114 Richards Nov 1977 A
4074508 Reid Feb 1978 A
4079739 Whitehead Mar 1978 A
4084592 Tritsch Apr 1978 A
4100922 Hernandez Jul 1978 A
D254099 Richards Feb 1980 S
4232674 Melican Nov 1980 A
4257418 Hessner Mar 1981 A
4259220 Bunnelle et al. Mar 1981 A
4296750 Woon et al. Oct 1981 A
4315508 Bolick et al. Feb 1982 A
4324246 Mullane et al. Apr 1982 A
4340706 Obayashi et al. Jul 1982 A
4341216 Obenour Jul 1982 A
4342314 Radel et al. Aug 1982 A
4360021 Stima Nov 1982 A
4381783 Elias May 1983 A
4388075 Mesek et al. Jun 1983 A
4410571 Korpman Oct 1983 A
4461621 Karami et al. Jul 1984 A
4463045 Ahr Jul 1984 A
4469710 Rielley et al. Sep 1984 A
D276073 Whitehead Oct 1984 S
4475912 Coates Oct 1984 A
4490148 Beckestrom Dec 1984 A
4507438 Obayashi et al. Mar 1985 A
4515595 Kievit May 1985 A
4527990 Sigl Jul 1985 A
4541871 Obayashi et al. Sep 1985 A
4551191 Kock et al. Nov 1985 A
4573986 Minetola Mar 1986 A
4578072 Lancaster Mar 1986 A
4578702 Campbell, III Mar 1986 A
4585448 Enloe Apr 1986 A
4585450 Rosch et al. Apr 1986 A
4589878 Mitrani May 1986 A
4596568 Flug Jun 1986 A
4601717 Blevins Jul 1986 A
4606964 Wideman Aug 1986 A
4609518 Curro et al. Sep 1986 A
4610678 Weisman Sep 1986 A
4623342 Ito et al. Nov 1986 A
4624666 Derossett et al. Nov 1986 A
4629643 Curro Dec 1986 A
4636207 Buell Jan 1987 A
4641381 Heran et al. Feb 1987 A
4646510 Mcintyre Mar 1987 A
4662875 Hirotsu May 1987 A
4666983 Tsubakimoto et al. May 1987 A
4670011 Mesek Jun 1987 A
4670012 Johnson Jun 1987 A
4680030 Coates et al. Jul 1987 A
4681579 Toussant et al. Jul 1987 A
4681581 Coates Jul 1987 A
4681793 Linman et al. Jul 1987 A
4690680 Higgins Sep 1987 A
4695278 Lawson Sep 1987 A
4699622 Toussant Oct 1987 A
4704115 Buell Nov 1987 A
4704116 Enloe Nov 1987 A
4710189 Lash Dec 1987 A
4715918 Lang Dec 1987 A
4720321 Smith Jan 1988 A
4731066 Korpman Mar 1988 A
4731070 Koci Mar 1988 A
RE32649 Brandt et al. Apr 1988 E
4741941 Englebert May 1988 A
4747846 Boland et al. May 1988 A
4753648 Jackson Jun 1988 A
4773905 Molee et al. Sep 1988 A
4784892 Storey et al. Nov 1988 A
4785996 Ziecker Nov 1988 A
4787896 Houghton et al. Nov 1988 A
4795454 Dragoo Jan 1989 A
4800102 Takada Jan 1989 A
4802884 Froeidh Feb 1989 A
4806408 Pierre et al. Feb 1989 A
4806598 Morman Feb 1989 A
4808176 Kielpikowski Feb 1989 A
4808178 Aziz Feb 1989 A
4826880 Lesniak et al. May 1989 A
4834735 Alemany May 1989 A
4834740 Suzuki et al. May 1989 A
4834742 Wilson et al. May 1989 A
4838886 Kent Jun 1989 A
4842666 Werenicz Jun 1989 A
4846815 Scripps Jul 1989 A
4846825 Enloe et al. Jul 1989 A
4848815 Molloy Jul 1989 A
4861652 Lippert et al. Aug 1989 A
4869724 Scripps Sep 1989 A
4886697 Perdelwitz, Jr. et al. Dec 1989 A
4888231 Angstadt Dec 1989 A
4892528 Suzuki Jan 1990 A
4892535 Bjornberg Jan 1990 A
4892536 Desmarais Jan 1990 A
4894060 Nestegard Jan 1990 A
4894277 Akasaki Jan 1990 A
4900317 Buell Feb 1990 A
4904251 Igaue et al. Feb 1990 A
4909802 Ahr et al. Mar 1990 A
4909803 Aziz Mar 1990 A
4936839 Molee et al. Jun 1990 A
4940463 Leathers et al. Jul 1990 A
4940464 Van Gompel Jul 1990 A
4946527 Battrell Aug 1990 A
4950264 Osborn, III Aug 1990 A
4960477 Mesek Oct 1990 A
4963140 Robertson Oct 1990 A
4966809 Tanaka et al. Oct 1990 A
4968313 Sabee Nov 1990 A
4988344 Reising et al. Jan 1991 A
4990147 Freeland Feb 1991 A
4994053 Lang Feb 1991 A
5006394 Baird Apr 1991 A
5019063 Marsan et al. May 1991 A
5019072 Polski May 1991 A
5021051 Hiuke Jun 1991 A
5030314 Lang Jul 1991 A
5032120 Freeland et al. Jul 1991 A
5034008 Breitkopf Jul 1991 A
5037416 Allen Aug 1991 A
5071414 Elliott Dec 1991 A
5072687 Mitchell et al. Dec 1991 A
D323888 Hermanson et al. Feb 1992 S
5085654 Buell Feb 1992 A
5087255 Sims Feb 1992 A
5092861 Nomura Mar 1992 A
5102597 Berg et al. Apr 1992 A
5114420 Igaue et al. May 1992 A
5124188 Roe et al. Jun 1992 A
5135522 Fahrenkrug et al. Aug 1992 A
5137537 Herron Aug 1992 A
D329697 Fahrenkrug et al. Sep 1992 S
5143679 Weber Sep 1992 A
5147343 Kellenberger Sep 1992 A
5147345 Lavon Sep 1992 A
5149334 Berg et al. Sep 1992 A
5149335 Kellenberger Sep 1992 A
5151091 Glaug et al. Sep 1992 A
5151092 Buell Sep 1992 A
5156793 Buell Oct 1992 A
5167653 Igaue et al. Dec 1992 A
5167897 Weber Dec 1992 A
5175046 Nguyen Dec 1992 A
5180622 Lahrman et al. Jan 1993 A
5190563 Herron et al. Mar 1993 A
5190606 Merkatoris et al. Mar 1993 A
5204997 Suzuki et al. Apr 1993 A
5213817 Pelley May 1993 A
5221274 Buell Jun 1993 A
5235515 Ungpiyakul et al. Aug 1993 A
5242436 Weil Sep 1993 A
5246431 Minetola et al. Sep 1993 A
5246432 Suzuki et al. Sep 1993 A
5246433 Hasse Sep 1993 A
5248309 Serbiak Sep 1993 A
5260345 Desmarais Nov 1993 A
5269775 Freeland Dec 1993 A
5281683 Yano et al. Jan 1994 A
H1298 Ahr et al. Apr 1994 H
5300565 Berg et al. Apr 1994 A
5312386 Correa et al. May 1994 A
5331059 Engelhardt et al. Jul 1994 A
5336552 Strack et al. Aug 1994 A
5348547 Payne et al. Sep 1994 A
5358500 Lavon et al. Oct 1994 A
5366782 Curro et al. Nov 1994 A
5382610 Harada et al. Jan 1995 A
5387207 Dyer Feb 1995 A
5387208 Ashton Feb 1995 A
5387209 Yamamoto et al. Feb 1995 A
5389095 Suzuki et al. Feb 1995 A
5397316 Young Mar 1995 A
5397317 Thomas Mar 1995 A
5399175 Glaug et al. Mar 1995 A
5401792 Babu et al. Mar 1995 A
5409771 Dahmen et al. Apr 1995 A
H1440 New et al. May 1995 H
5411497 Tanzer May 1995 A
5415644 Enloe May 1995 A
5425725 Tanzer Jun 1995 A
5429630 Beal et al. Jul 1995 A
5433715 Tanzer Jul 1995 A
5451219 Suzuki et al. Sep 1995 A
5451442 Pieniak et al. Sep 1995 A
5460622 Dragoo et al. Oct 1995 A
5460623 Emenaker et al. Oct 1995 A
5462541 Bruemmer et al. Oct 1995 A
5476458 Glaug et al. Dec 1995 A
5486166 Bishop et al. Jan 1996 A
5486167 Dragoo et al. Jan 1996 A
5490846 Ellis et al. Feb 1996 A
5492962 Lahrman et al. Feb 1996 A
5494622 Heath et al. Feb 1996 A
5499978 Buell Mar 1996 A
5507736 Clear Apr 1996 A
5507895 Suekane Apr 1996 A
5509915 Hanson Apr 1996 A
5514104 Cole et al. May 1996 A
5518801 Chappell May 1996 A
5520674 Lavon et al. May 1996 A
5522810 Allen, Jr. et al. Jun 1996 A
5527300 Sauer Jun 1996 A
5531730 Dreier Jul 1996 A
5532323 Yano et al. Jul 1996 A
5542943 Sageser Aug 1996 A
5549592 Fries et al. Aug 1996 A
5549593 Ygge et al. Aug 1996 A
5549791 Herron et al. Aug 1996 A
5554145 Roe Sep 1996 A
5559335 Zeng et al. Sep 1996 A
5560878 Dragoo et al. Oct 1996 A
5562634 Flumene et al. Oct 1996 A
5562646 Goldman Oct 1996 A
5569234 Buell Oct 1996 A
5571096 Dobrin Nov 1996 A
5574121 Irie et al. Nov 1996 A
5575783 Clear Nov 1996 A
5580411 Nease Dec 1996 A
5584829 Lavash et al. Dec 1996 A
5586979 Thomas Dec 1996 A
5591152 Buell Jan 1997 A
5591155 Nishikawa Jan 1997 A
5593399 Tanzer Jan 1997 A
5599335 Goldman Feb 1997 A
5601542 Melius Feb 1997 A
5607414 Richards Mar 1997 A
5607416 Yamamoto et al. Mar 1997 A
5607537 Johnson et al. Mar 1997 A
5607760 Roe Mar 1997 A
5609587 Roe Mar 1997 A
5609588 Dipalma et al. Mar 1997 A
5611879 Morman Mar 1997 A
5613959 Roessler et al. Mar 1997 A
5613960 Mizutani Mar 1997 A
5614283 Potnis et al. Mar 1997 A
5622589 Johnson et al. Apr 1997 A
5624423 Anjur et al. Apr 1997 A
5624424 Saisaka et al. Apr 1997 A
5625222 Yoneda Apr 1997 A
5626571 Young et al. May 1997 A
5628741 Buell et al. May 1997 A
5628845 Murray et al. May 1997 A
5635191 Roe Jun 1997 A
5635271 Zafiroglu Jun 1997 A
5637106 Mitchell et al. Jun 1997 A
5643238 Baker Jul 1997 A
5643243 Klemp Jul 1997 A
5643588 Roe Jul 1997 A
5649914 Glaug et al. Jul 1997 A
5650214 Anderson et al. Jul 1997 A
5658268 Johns et al. Aug 1997 A
5662634 Yamamoto et al. Sep 1997 A
5662638 Johnson et al. Sep 1997 A
5662758 Hamilton et al. Sep 1997 A
5669894 Goldman Sep 1997 A
5674215 Roennberg Oct 1997 A
5681300 Ahr Oct 1997 A
5683374 Yamamoto et al. Nov 1997 A
5685874 Buell et al. Nov 1997 A
5690624 Sasaki et al. Nov 1997 A
5690627 Clear et al. Nov 1997 A
5691035 Chappell et al. Nov 1997 A
5691036 Lin et al. Nov 1997 A
5695488 Sosalla Dec 1997 A
5700254 Mcdowall Dec 1997 A
5702376 Glaug et al. Dec 1997 A
5714156 Schmidt et al. Feb 1998 A
5723087 Chappell et al. Mar 1998 A
5733275 Davis et al. Mar 1998 A
5749866 Roe et al. May 1998 A
5752947 Awolin May 1998 A
5756039 Mcfall May 1998 A
H1732 Johnson Jun 1998 H
5762641 Bewick-sonntag Jun 1998 A
5766388 Pelley et al. Jun 1998 A
5766389 Brandon et al. Jun 1998 A
5772825 Schmitz Jun 1998 A
5776121 Roe et al. Jul 1998 A
5779831 Schmitz Jul 1998 A
5788684 Abuto et al. Aug 1998 A
5795345 Mizutani et al. Aug 1998 A
5797892 Glaug Aug 1998 A
5797894 Cadieux et al. Aug 1998 A
5807365 Luceri Sep 1998 A
5810796 Kimura Sep 1998 A
5810800 Hunter et al. Sep 1998 A
5814035 Gryskiewicz et al. Sep 1998 A
5820618 Roberts et al. Oct 1998 A
5827257 Fujioka et al. Oct 1998 A
5830202 Bogdanski et al. Nov 1998 A
5833678 Ashton et al. Nov 1998 A
5837789 Stockhausen et al. Nov 1998 A
5840404 Graff Nov 1998 A
5843059 Niemeyer et al. Dec 1998 A
5846231 Fujioka et al. Dec 1998 A
5846232 Serbiak et al. Dec 1998 A
5849816 Suskind et al. Dec 1998 A
5851204 Mizutani Dec 1998 A
5855572 Schmidt Jan 1999 A
5858013 Kling Jan 1999 A
5858515 Stokes et al. Jan 1999 A
5865823 Curro Feb 1999 A
5865824 Chen et al. Feb 1999 A
5873868 Nakahata Feb 1999 A
5876391 Roe et al. Mar 1999 A
5879751 Bogdanski Mar 1999 A
5891118 Toyoshima et al. Apr 1999 A
5891544 Chappell et al. Apr 1999 A
5897545 Kline Apr 1999 A
5904673 Roe et al. May 1999 A
5925439 Haubach Jul 1999 A
5928184 Etheredge et al. Jul 1999 A
5931825 Kuen et al. Aug 1999 A
5938648 Beck Aug 1999 A
5938650 Baer et al. Aug 1999 A
5941862 Haynes et al. Aug 1999 A
5944706 Palumbo et al. Aug 1999 A
5947949 Inoue et al. Sep 1999 A
5951536 Osborn, III et al. Sep 1999 A
5957908 Kline Sep 1999 A
5968025 Roe Oct 1999 A
5968029 Chappell et al. Oct 1999 A
5980500 Shimizu et al. Nov 1999 A
5981824 Luceri Nov 1999 A
5989236 Roe et al. Nov 1999 A
6004306 Robles Dec 1999 A
6022430 Blenke et al. Feb 2000 A
6022431 Blenke et al. Feb 2000 A
6042673 Johnson et al. Mar 2000 A
6050984 Fujioka Apr 2000 A
6054631 Gent Apr 2000 A
6056732 Fujioka et al. May 2000 A
6060115 Borowski et al. May 2000 A
6068620 Chmielewski May 2000 A
6080909 Oesterdahl et al. Jun 2000 A
6083210 Young et al. Jul 2000 A
6090994 Chen Jul 2000 A
6091336 Zand et al. Jul 2000 A
6093474 Sironi Jul 2000 A
6099515 Sugito Aug 2000 A
6102892 Putzer et al. Aug 2000 A
6103814 Vandrongelen et al. Aug 2000 A
6107537 Elder Aug 2000 A
6110157 Schmidt Aug 2000 A
6117121 Faulks et al. Sep 2000 A
6117803 Morman et al. Sep 2000 A
6120486 Toyoda et al. Sep 2000 A
6120487 Ashton Sep 2000 A
6120489 Johnson Sep 2000 A
6120866 Arakawa et al. Sep 2000 A
6121509 Ashraf et al. Sep 2000 A
6129717 Fujioka et al. Oct 2000 A
6129720 Blenke et al. Oct 2000 A
6132411 Huber et al. Oct 2000 A
6139912 Onuschak et al. Oct 2000 A
6143821 Houben Nov 2000 A
6152908 Widlund et al. Nov 2000 A
6156023 Yoshioka Dec 2000 A
6156424 Taylor Dec 2000 A
6160197 Lassen et al. Dec 2000 A
6165160 Suzuki Dec 2000 A
6174302 Kumasaka Jan 2001 B1
6177606 Etheredge et al. Jan 2001 B1
6177607 Blaney et al. Jan 2001 B1
6186996 Martin Feb 2001 B1
6210386 Inoue Apr 2001 B1
6210390 Karlsson Apr 2001 B1
6231556 Osborn, III May 2001 B1
6231566 Lai May 2001 B1
6238380 Sasaki May 2001 B1
6241716 Roennberg Jun 2001 B1
6254294 Muhar Jul 2001 B1
6258996 Goldman Jul 2001 B1
6265488 Nagasuna et al. Jul 2001 B1
6290686 Tanzer Sep 2001 B1
6306122 Narawa et al. Oct 2001 B1
6315765 Datta et al. Nov 2001 B1
6319239 Daniels Nov 2001 B1
6322552 Blenke et al. Nov 2001 B1
6325787 Roe et al. Dec 2001 B1
6326525 Hamajima et al. Dec 2001 B1
6330735 Hahn et al. Dec 2001 B1
6334858 Ronnberg et al. Jan 2002 B1
6336922 Vangompel et al. Jan 2002 B1
6340611 Shimizu et al. Jan 2002 B1
6342715 Shimizu et al. Jan 2002 B1
6350332 Thomas et al. Feb 2002 B1
6368687 Joseph et al. Apr 2002 B1
6371948 Mizutani Apr 2002 B1
6372952 Lash et al. Apr 2002 B1
6375644 Mizutani Apr 2002 B2
6376034 Brander Apr 2002 B1
6383431 Dobrin May 2002 B1
6383960 Everett et al. May 2002 B1
6394989 Mizutani May 2002 B2
6402729 Boberg et al. Jun 2002 B1
6402731 Suprise et al. Jun 2002 B1
6403857 Gross et al. Jun 2002 B1
6406467 Dilnik et al. Jun 2002 B1
6409883 Makolin Jun 2002 B1
6410820 Mcfall et al. Jun 2002 B1
6410822 Mizutani Jun 2002 B1
6413248 Mizutani Jul 2002 B1
6413249 Turi et al. Jul 2002 B1
6414214 Engelhardt et al. Jul 2002 B1
6416502 Connelly et al. Jul 2002 B1
6416697 Venturino et al. Jul 2002 B1
6419667 Avalon et al. Jul 2002 B1
6423046 Fujioka et al. Jul 2002 B1
6423048 Suzuki et al. Jul 2002 B1
6423884 Oehmen Jul 2002 B1
D461242 Brisebois et al. Aug 2002 S
D461893 Gannon et al. Aug 2002 S
6429350 Tanzer et al. Aug 2002 B1
6432094 Fujioka et al. Aug 2002 B1
6432098 Kline Aug 2002 B1
6432099 Roennberg Aug 2002 B2
6437214 Everett et al. Aug 2002 B1
6440115 Connelly et al. Aug 2002 B1
6441268 Edwardsson Aug 2002 B1
6443933 Suzuki et al. Sep 2002 B1
6444064 Henry Sep 2002 B1
6447496 Mizutani Sep 2002 B1
6458111 Onishi et al. Oct 2002 B1
6458877 Ahmed et al. Oct 2002 B1
6459016 Rosenfeld et al. Oct 2002 B1
6461034 Cleveland Oct 2002 B1
6461342 Tanji et al. Oct 2002 B2
6461343 Schaefer et al. Oct 2002 B1
6472478 Funk Oct 2002 B1
6475201 Saito et al. Nov 2002 B2
6494872 Suzuki et al. Dec 2002 B1
6494873 Karlsson et al. Dec 2002 B2
6500159 Carvalho Dec 2002 B1
6503233 Chen Jan 2003 B1
6503979 Funk et al. Jan 2003 B1
6506186 Roessler et al. Jan 2003 B1
6506961 Levy Jan 2003 B1
6515195 Lariviere et al. Feb 2003 B1
6517525 Berthou et al. Feb 2003 B1
6518479 Graef et al. Feb 2003 B1
6520947 Tilly et al. Feb 2003 B1
6521811 Lassen et al. Feb 2003 B1
6521812 Graef et al. Feb 2003 B1
6524294 Hilston et al. Feb 2003 B1
6525240 Graef et al. Feb 2003 B1
6528698 Mizutani et al. Mar 2003 B2
6529860 Strumolo et al. Mar 2003 B1
6531025 Lender et al. Mar 2003 B1
6531027 Lender et al. Mar 2003 B1
6534149 Daley et al. Mar 2003 B1
6559081 Erspamer et al. May 2003 B1
6559239 Riegel et al. May 2003 B1
6562168 Schmitt et al. May 2003 B1
6562192 Hamilton May 2003 B1
6563013 Murota May 2003 B1
6569137 Suzuki et al. May 2003 B2
6573422 Rosenfeld et al. Jun 2003 B1
6585713 Lemahieu et al. Jul 2003 B1
6585858 Otto et al. Jul 2003 B1
6602234 Klemp et al. Aug 2003 B2
6605070 Ludwig et al. Aug 2003 B2
6605172 Anderson et al. Aug 2003 B1
6605752 Magnusson et al. Aug 2003 B2
6610900 Tanzer Aug 2003 B1
D481458 De Carvalho et al. Oct 2003 S
6630054 Graef et al. Oct 2003 B1
6632209 Chmielewski Oct 2003 B1
6632504 Gillespie Oct 2003 B1
6645569 Cramer Nov 2003 B2
6646180 Chmielewski Nov 2003 B1
6648869 Gillies et al. Nov 2003 B1
6648870 Itoh et al. Nov 2003 B2
6648871 Kusibojoska et al. Nov 2003 B2
6649807 Mizutani Nov 2003 B2
6649810 Minato et al. Nov 2003 B1
6657015 Riegel et al. Dec 2003 B1
6657102 Furuya et al. Dec 2003 B2
6667424 Hamilton Dec 2003 B1
6670522 Graef et al. Dec 2003 B1
6673982 Chen Jan 2004 B1
6673983 Graef et al. Jan 2004 B1
6673985 Mizutani et al. Jan 2004 B2
6682515 Mizutani et al. Jan 2004 B1
6682516 Johnston et al. Jan 2004 B2
6689115 Coenen et al. Feb 2004 B1
6689934 Dodge, II et al. Feb 2004 B2
6695827 Chen Feb 2004 B2
6700034 Lindsay et al. Mar 2004 B1
6703538 Lassen et al. Mar 2004 B2
6705465 Ling et al. Mar 2004 B2
6706129 Ando et al. Mar 2004 B2
6706943 Onishi et al. Mar 2004 B2
6710224 Chmielewski et al. Mar 2004 B2
6710225 Everett et al. Mar 2004 B1
6716205 Coenen et al. Apr 2004 B2
6716441 Osborne et al. Apr 2004 B1
6717029 Baker Apr 2004 B2
6726668 Underhill et al. Apr 2004 B2
6726792 Johnson et al. Apr 2004 B1
6730387 Rezai et al. May 2004 B2
6734335 Graef et al. May 2004 B1
6790798 Suzuki Sep 2004 B1
6802834 Melius et al. Oct 2004 B2
6809158 Ikeuchi et al. Oct 2004 B2
6811642 Ochi Nov 2004 B2
6818083 Mcamish et al. Nov 2004 B2
6818166 Edwardson et al. Nov 2004 B2
6830800 Curro et al. Dec 2004 B2
6832905 Delzer et al. Dec 2004 B2
6840929 Kurata Jan 2005 B2
6846374 Coenen et al. Jan 2005 B2
6858771 Yoshimasa et al. Feb 2005 B2
D503230 Christianson Mar 2005 S
6863933 Cramer Mar 2005 B2
6863960 Curro et al. Mar 2005 B2
6867345 Shimoe et al. Mar 2005 B2
6867346 Dopps et al. Mar 2005 B1
6878433 Curro Apr 2005 B2
6878647 Rezai Apr 2005 B1
6880211 Jackson et al. Apr 2005 B2
6891080 Minato et al. May 2005 B2
6904865 Klofta et al. Jun 2005 B2
6911574 Mizutani Jun 2005 B1
6923797 Shinohara et al. Aug 2005 B2
6923926 Walter et al. Aug 2005 B2
6926703 Sugito et al. Aug 2005 B2
6929629 Drevik et al. Aug 2005 B2
6939914 Qin et al. Sep 2005 B2
6946585 London Sep 2005 B2
6953451 Berba et al. Oct 2005 B2
6955733 Miller Oct 2005 B2
6962578 Lavon Nov 2005 B1
6962645 Graef et al. Nov 2005 B2
6965058 Raidel Nov 2005 B1
6969781 Graef et al. Nov 2005 B2
6972010 Pesce et al. Dec 2005 B2
6972011 Mori Dec 2005 B2
6979564 Glucksmann et al. Dec 2005 B2
6982052 Daniels et al. Jan 2006 B2
7001167 Venturino et al. Feb 2006 B2
7014632 Takino et al. Mar 2006 B2
7015370 Watanabe et al. Mar 2006 B2
7037299 Turi et al. May 2006 B2
7037571 Fish et al. May 2006 B2
7048726 Kusagawa et al. May 2006 B2
7056311 Kinoshita et al. Jun 2006 B2
7067711 Kuroda et al. Jun 2006 B2
7073373 La Fortune Jul 2006 B2
7078583 Kudo et al. Jul 2006 B2
7090665 Ohashi et al. Aug 2006 B2
7108759 You et al. Sep 2006 B2
7108916 Ehrnsperger Sep 2006 B2
7112621 Rohrbaugh Sep 2006 B2
7122713 Komatsu et al. Oct 2006 B2
7125470 Graef et al. Oct 2006 B2
7132585 Kudo et al. Nov 2006 B2
7147628 Drevik Dec 2006 B2
7150729 Shimada et al. Dec 2006 B2
7154019 Mishima et al. Dec 2006 B2
7160281 Leminh et al. Jan 2007 B2
7163528 Christon Jan 2007 B2
7166190 Graef et al. Jan 2007 B2
7169136 Otsubo et al. Jan 2007 B2
7183360 Daniel et al. Feb 2007 B2
7189888 Wang et al. Mar 2007 B2
7196241 Kinoshita et al. Mar 2007 B2
7199211 Popp et al. Apr 2007 B2
7204830 Mishima et al. Apr 2007 B2
7207978 Takino et al. Apr 2007 B2
D542409 Wannaborworn May 2007 S
7219403 Miyamoto et al. May 2007 B2
7220251 Otsubo et al. May 2007 B2
D546945 Munakata Jul 2007 S
7241280 Christon et al. Jul 2007 B2
7250481 Jaworek et al. Jul 2007 B2
7252657 Mishima et al. Aug 2007 B2
7265258 Hamilton Sep 2007 B2
7270651 Adams Sep 2007 B2
7285178 Mischler Oct 2007 B2
RE39919 Dodge, II et al. Nov 2007 E
7306582 Adams Dec 2007 B2
7311696 Christon et al. Dec 2007 B2
7311968 Ehrnsperger et al. Dec 2007 B2
7312372 Miyama et al. Dec 2007 B2
7318820 Lavon et al. Jan 2008 B2
7329244 Otsubo et al. Feb 2008 B2
7329246 Kinoshita et al. Feb 2008 B2
7335810 Yoshimasa et al. Feb 2008 B2
D568990 Bissah et al. May 2008 S
D569505 Bissah et al. May 2008 S
D569971 Marcelo May 2008 S
7377914 Lavon May 2008 B2
7429689 Chen Sep 2008 B2
7435244 Schroer, Jr. et al. Oct 2008 B2
7465373 Graef et al. Dec 2008 B2
7500969 Mishima et al. Mar 2009 B2
7504552 Tamura et al. Mar 2009 B2
7520874 Koyama et al. Apr 2009 B2
7521109 Suzuki et al. Apr 2009 B2
7521587 Busam et al. Apr 2009 B2
7537832 Carlucci et al. May 2009 B2
7547815 Ohashi et al. Jun 2009 B2
7550646 Tamura et al. Jun 2009 B2
7563257 Nakajima et al. Jul 2009 B2
7588561 Kenmochi et al. Sep 2009 B2
7594904 Rosenfeld et al. Sep 2009 B2
7598428 Gustavsson et al. Oct 2009 B2
7625363 Yoshimasa et al. Dec 2009 B2
7641642 Murai et al. Jan 2010 B2
7648490 Kuroda et al. Jan 2010 B2
7652111 Hermeling et al. Jan 2010 B2
7666173 Mishima et al. Feb 2010 B2
7666174 Onishi et al. Feb 2010 B2
7686790 Rasmussen et al. Mar 2010 B2
7687596 Hermeling et al. Mar 2010 B2
7695461 Rosenfeld et al. Apr 2010 B2
7696402 Nishikawa et al. Apr 2010 B2
7708725 Tamagawa et al. May 2010 B2
7717150 Manabe et al. May 2010 B2
7718844 Olson May 2010 B2
7722587 Suzuki et al. May 2010 B2
7722590 Tsuji et al. May 2010 B2
7727217 Hancock-cooke Jun 2010 B2
7736351 Nigam et al. Jun 2010 B2
7737324 Lavon et al. Jun 2010 B2
7744576 Busam Jun 2010 B2
7744578 Tanio et al. Jun 2010 B2
7750203 Becker et al. Jul 2010 B2
7754822 Daniel et al. Jul 2010 B2
7754940 Brisebois et al. Jul 2010 B2
7759540 Litvay et al. Jul 2010 B2
7763004 Lavon Jul 2010 B2
7767875 Olson et al. Aug 2010 B2
7767876 Davis et al. Aug 2010 B2
7767878 Suzuki Aug 2010 B2
7772420 Hermeling et al. Aug 2010 B2
7786341 Schneider et al. Aug 2010 B2
7795492 Vartiainen Sep 2010 B2
7803145 Rosenfeld et al. Sep 2010 B2
7825291 Elfsberg et al. Nov 2010 B2
7838722 Blessing et al. Nov 2010 B2
7850672 Guidotti et al. Dec 2010 B2
7851667 Becker et al. Dec 2010 B2
7855314 Hanao et al. Dec 2010 B2
7857797 Kudo et al. Dec 2010 B2
7858842 Komatsu et al. Dec 2010 B2
7884259 Hanao et al. Feb 2011 B2
7888549 Jansson et al. Feb 2011 B2
7910797 Nandrea et al. Mar 2011 B2
7931636 Lavon et al. Apr 2011 B2
7935207 Zhao et al. May 2011 B2
7935861 Suzuki May 2011 B2
7938813 Wang et al. May 2011 B2
7942858 Francoeur et al. May 2011 B2
7951126 Nanjyo et al. May 2011 B2
7959620 Miura et al. Jun 2011 B2
7982091 Konawa Jul 2011 B2
7993319 Sperl Aug 2011 B2
8017827 Hundorf et al. Sep 2011 B2
8029486 Nakajima et al. Oct 2011 B2
8034991 Bruzadin et al. Oct 2011 B2
8039684 Guidotti et al. Oct 2011 B2
8052454 Polnyi Nov 2011 B2
8057620 Perego et al. Nov 2011 B2
8109915 Shimoe et al. Feb 2012 B2
8124828 Kline et al. Feb 2012 B2
8133212 Takada Mar 2012 B2
8148598 Tsang et al. Apr 2012 B2
8163124 Moriura et al. Apr 2012 B2
8167862 Digiacomantonio et al. May 2012 B2
8173858 Kuroda et al. May 2012 B2
8178747 Venturino et al. May 2012 B2
8183430 Haakansson et al. May 2012 B2
8186296 Brown May 2012 B2
8187239 Lavon May 2012 B2
8187240 Busam et al. May 2012 B2
8198506 Venturino et al. Jun 2012 B2
8211815 Baker et al. Jul 2012 B2
8236715 Schmidt et al. Aug 2012 B2
8237012 Miyama et al. Aug 2012 B2
8246594 Sperl et al. Aug 2012 B2
8258367 Lawson et al. Sep 2012 B2
8268424 Suzuki et al. Sep 2012 B1
8273943 Noda et al. Sep 2012 B2
8282617 Kaneda Oct 2012 B2
8283516 Litvay Oct 2012 B2
8317766 Naoto et al. Nov 2012 B2
8317768 Larsson Nov 2012 B2
8319005 Becker et al. Nov 2012 B2
8343123 Noda et al. Jan 2013 B2
8343296 Blessing et al. Jan 2013 B2
8360977 Marttila et al. Jan 2013 B2
8361047 Mukai et al. Jan 2013 B2
8377025 Nakajima et al. Feb 2013 B2
8450555 Nhan et al. May 2013 B2
8496637 Hundorf et al. Jul 2013 B2
8519213 Venturino et al. Aug 2013 B2
8524355 Nakaoka Sep 2013 B2
8552252 Hundorf et al. Oct 2013 B2
8563802 Nishikawa et al. Oct 2013 B2
8568566 Jackels et al. Oct 2013 B2
8569571 Kline et al. Oct 2013 B2
8581019 Carlucci et al. Nov 2013 B2
8603058 Sperl et al. Dec 2013 B2
8604270 Venturino et al. Dec 2013 B2
8633347 Bianco et al. Jan 2014 B2
8664468 Lawson et al. Mar 2014 B2
8674170 Busam et al. Mar 2014 B2
8702668 Noel Apr 2014 B2
8734417 Lavon et al. May 2014 B2
8766031 Becker et al. Jul 2014 B2
8772570 Kawakami et al. Jul 2014 B2
8784594 Blessing et al. Jul 2014 B2
8785715 Wright et al. Jul 2014 B2
8791318 Becker et al. Jul 2014 B2
8936584 Zander et al. Jan 2015 B2
9056034 Akiyama Jun 2015 B2
9326896 Schäfer et al. May 2016 B2
9468566 Rosati et al. Oct 2016 B2
10675187 Joseph Jun 2020 B2
10675192 Nishikawa et al. Jun 2020 B2
11135105 Rosati Oct 2021 B2
20010007065 Blanchard et al. Jul 2001 A1
20010008964 Kurata et al. Jul 2001 A1
20010016548 Kugler et al. Aug 2001 A1
20010020157 Mizutani et al. Sep 2001 A1
20010037101 Allan et al. Nov 2001 A1
20010044610 Kim et al. Nov 2001 A1
20020007167 Dan et al. Jan 2002 A1
20020007169 Graef Jan 2002 A1
20020016122 Curro Feb 2002 A1
20020016579 Stenberg Feb 2002 A1
20020045881 Kusibojoska et al. Apr 2002 A1
20020055726 Costa May 2002 A1
20020056516 Ochi May 2002 A1
20020058919 Hamilton et al. May 2002 A1
20020062112 Mizutani May 2002 A1
20020062115 Wada et al. May 2002 A1
20020062116 Mizutani et al. May 2002 A1
20020065498 Ohashi et al. May 2002 A1
20020072471 Ikeuchi et al. Jun 2002 A1
20020082575 Dan et al. Jun 2002 A1
20020087139 Coenen et al. Jul 2002 A1
20020095127 Fish et al. Jul 2002 A1
20020102392 Fish et al. Aug 2002 A1
20020115969 Mori et al. Aug 2002 A1
20020123728 Graef et al. Sep 2002 A1
20020123848 Schneiderman et al. Sep 2002 A1
20020151634 Rohrbaugh et al. Oct 2002 A1
20020151861 Klemp et al. Oct 2002 A1
20020173767 Coenen Nov 2002 A1
20020192366 Cramer et al. Dec 2002 A1
20020197695 Glucksmann et al. Dec 2002 A1
20030036741 Abba et al. Feb 2003 A1
20030078553 Wada Apr 2003 A1
20030084983 Rangachari et al. May 2003 A1
20030088223 Vogt et al. May 2003 A1
20030088229 Baker et al. May 2003 A1
20030105190 Diehl Jun 2003 A1
20030109839 Costea Jun 2003 A1
20030114811 Christon Jun 2003 A1
20030114816 Underhill et al. Jun 2003 A1
20030114818 Benecke Jun 2003 A1
20030115969 Koyano Jun 2003 A1
20030120235 Boulanger Jun 2003 A1
20030120249 Wulz et al. Jun 2003 A1
20030135176 Delzer et al. Jul 2003 A1
20030135181 Chen Jul 2003 A1
20030135182 Woon Jul 2003 A1
20030139712 Dodge et al. Jul 2003 A1
20030139715 Dodge et al. Jul 2003 A1
20030139718 Graef et al. Jul 2003 A1
20030144642 Dopps et al. Jul 2003 A1
20030144644 Murai Jul 2003 A1
20030148684 Cramer et al. Aug 2003 A1
20030148694 Ghiam Aug 2003 A1
20030158530 Diehl et al. Aug 2003 A1
20030158531 Chmielewski Aug 2003 A1
20030158532 Magee Aug 2003 A1
20030167045 Graef et al. Sep 2003 A1
20030171727 Graef et al. Sep 2003 A1
20030208175 Gross et al. Nov 2003 A1
20030225385 Glaug et al. Dec 2003 A1
20030230391 Hamed et al. Dec 2003 A1
20030233082 Kline Dec 2003 A1
20030236512 Baker Dec 2003 A1
20040019338 Litvay et al. Jan 2004 A1
20040022998 Miyamoto et al. Feb 2004 A1
20040033750 Everett et al. Feb 2004 A1
20040063367 Dodge et al. Apr 2004 A1
20040064113 Erdman Apr 2004 A1
20040064115 Arora et al. Apr 2004 A1
20040064116 Arora et al. Apr 2004 A1
20040064125 Justmann et al. Apr 2004 A1
20040065420 Graef et al. Apr 2004 A1
20040082928 Pesce et al. Apr 2004 A1
20040097895 Busam May 2004 A1
20040122411 Hancock-cooke Jun 2004 A1
20040127131 Potnis Jul 2004 A1
20040127871 Odorzynski et al. Jul 2004 A1
20040127872 Petryk Jul 2004 A1
20040134596 Rosati et al. Jul 2004 A1
20040138633 Mishima et al. Jul 2004 A1
20040147890 Nakahata et al. Jul 2004 A1
20040158212 Ponomarenko Aug 2004 A1
20040162536 Becker Aug 2004 A1
20040167486 Busam Aug 2004 A1
20040167489 Kellenberger et al. Aug 2004 A1
20040170813 Digiacomantonio Sep 2004 A1
20040193127 Hansson et al. Sep 2004 A1
20040215160 Chmielewski et al. Oct 2004 A1
20040220541 Suzuki et al. Nov 2004 A1
20040225271 Datta et al. Nov 2004 A1
20040231065 Daniel et al. Nov 2004 A1
20040236299 Tsang et al. Nov 2004 A1
20040236455 Woltman et al. Nov 2004 A1
20040243078 Guidotti Dec 2004 A1
20040243082 Kinoshita et al. Dec 2004 A1
20040243084 Yoshimasa et al. Dec 2004 A1
20040249355 Tanio Dec 2004 A1
20040260259 Baker Dec 2004 A1
20050001929 Ochial et al. Jan 2005 A1
20050004543 Schroer et al. Jan 2005 A1
20050004548 Otsubo et al. Jan 2005 A1
20050008839 Cramer Jan 2005 A1
20050018258 Miyagi et al. Jan 2005 A1
20050038401 Suzuki et al. Feb 2005 A1
20050070867 Beruda et al. Mar 2005 A1
20050085784 Leminh et al. Apr 2005 A1
20050090789 Graef et al. Apr 2005 A1
20050101929 Waksmundzki et al. May 2005 A1
20050124951 Kudo et al. Jun 2005 A1
20050137543 Underhill et al. Jun 2005 A1
20050148258 Chakravarty et al. Jul 2005 A1
20050148961 Sosalla Jul 2005 A1
20050148990 Shimoe et al. Jul 2005 A1
20050154363 Minato et al. Jul 2005 A1
20050159720 Gentilcore Jul 2005 A1
20050165208 Popp et al. Jul 2005 A1
20050171499 Nigam et al. Aug 2005 A1
20050176910 Jaworek et al. Aug 2005 A1
20050203475 Lavon et al. Sep 2005 A1
20050215752 Popp et al. Sep 2005 A1
20050217791 Costello Oct 2005 A1
20050229543 Tippey Oct 2005 A1
20050234414 Liu Oct 2005 A1
20050245684 Daniel et al. Nov 2005 A1
20050288645 Lavon Dec 2005 A1
20050288646 Lavon Dec 2005 A1
20060004334 Schlinz et al. Jan 2006 A1
20060021695 Blessing Feb 2006 A1
20060024433 Blessing Feb 2006 A1
20060069367 Waksmundzki et al. Mar 2006 A1
20060069371 Ohashi Mar 2006 A1
20060073969 Torii et al. Apr 2006 A1
20060081348 Graef et al. Apr 2006 A1
20060116653 Munakata et al. Jun 2006 A1
20060129114 Mason et al. Jun 2006 A1
20060142724 Watanabe et al. Jun 2006 A1
20060155057 Hermeling et al. Jul 2006 A1
20060155254 Sanz et al. Jul 2006 A1
20060167215 Hermeling et al. Jul 2006 A1
20060177647 Schmidt Aug 2006 A1
20060178071 Schmidt et al. Aug 2006 A1
20060184146 Suzuki Aug 2006 A1
20060184149 Kasai et al. Aug 2006 A1
20060189954 Kudo Aug 2006 A1
20060202380 Bentley et al. Sep 2006 A1
20060206091 Cole et al. Sep 2006 A1
20060211828 Daniel et al. Sep 2006 A1
20060240229 Ehrnsperger et al. Oct 2006 A1
20060264860 Lavon Nov 2006 A1
20060264861 Lavon et al. Nov 2006 A1
20060271010 Lavon Nov 2006 A1
20070027436 Nakagawa et al. Feb 2007 A1
20070032770 Lavon et al. Feb 2007 A1
20070043191 Hermeling et al. Feb 2007 A1
20070043330 Lankhof Feb 2007 A1
20070044903 Wisneski et al. Mar 2007 A1
20070049892 Lord et al. Mar 2007 A1
20070049897 Lavon et al. Mar 2007 A1
20070073253 Miyama et al. Mar 2007 A1
20070078422 Glaug et al. Apr 2007 A1
20070088308 Ehrnsperger et al. Apr 2007 A1
20070093164 Nakaoka Apr 2007 A1
20070093767 Carlucci et al. Apr 2007 A1
20070100307 Nomoto et al. May 2007 A1
20070118087 Flohr May 2007 A1
20070123834 Mcdowall et al. May 2007 A1
20070156108 Becker et al. Jul 2007 A1
20070156110 Thyfault Jul 2007 A1
20070167928 Becker et al. Jul 2007 A1
20070179464 Becker et al. Aug 2007 A1
20070179469 Takahashi et al. Aug 2007 A1
20070191798 Glaug et al. Aug 2007 A1
20070219521 Hird Sep 2007 A1
20070219523 Bruun et al. Sep 2007 A1
20070244455 Hansson et al. Oct 2007 A1
20070246147 Venturino et al. Oct 2007 A1
20070255245 Asp et al. Nov 2007 A1
20070282288 Noda et al. Dec 2007 A1
20070282290 Cole et al. Dec 2007 A1
20070282291 Cole et al. Dec 2007 A1
20080027402 Schmidt et al. Jan 2008 A1
20080032035 Schmidt et al. Feb 2008 A1
20080091159 Carlucci et al. Apr 2008 A1
20080119810 Kuroda et al. May 2008 A1
20080125735 Busam May 2008 A1
20080132864 Lawson et al. Jun 2008 A1
20080140042 Mukai et al. Jun 2008 A1
20080208154 Oetjen Aug 2008 A1
20080221538 Zhao Sep 2008 A1
20080221539 Zhao Sep 2008 A1
20080228158 Sue et al. Sep 2008 A1
20080262459 Kamoto et al. Oct 2008 A1
20080268194 Kim et al. Oct 2008 A1
20080274227 Boatman et al. Nov 2008 A1
20080281287 Marcelo et al. Nov 2008 A1
20080294140 Ecker et al. Nov 2008 A1
20080312617 Hundorf Dec 2008 A1
20080312618 Hundorf et al. Dec 2008 A1
20080312619 Ashton et al. Dec 2008 A1
20080312620 Ashton et al. Dec 2008 A1
20080312621 Hundorf et al. Dec 2008 A1
20080312622 Hundorf Dec 2008 A1
20080312623 Hundorf et al. Dec 2008 A1
20080312624 Hundorf Dec 2008 A1
20080312625 Hundorf et al. Dec 2008 A1
20080312627 Takeuchi et al. Dec 2008 A1
20080312628 Hundorf et al. Dec 2008 A1
20090023848 Ahmed et al. Jan 2009 A1
20090056867 Moriura et al. Mar 2009 A1
20090058994 Kao et al. Mar 2009 A1
20090062760 Wright et al. Mar 2009 A1
20090088718 Toyoshima Apr 2009 A1
20090112173 Bissah et al. Apr 2009 A1
20090112175 Bissah et al. Apr 2009 A1
20090157022 Macdonald et al. Jun 2009 A1
20090192035 Stueven et al. Jul 2009 A1
20090240220 Macdonald et al. Sep 2009 A1
20090247977 Takeuchi Oct 2009 A1
20090258994 Stueven et al. Oct 2009 A1
20090270825 Wciorka Oct 2009 A1
20090298963 Matsumoto et al. Dec 2009 A1
20090299312 Macdonald et al. Dec 2009 A1
20090306618 Kudo et al. Dec 2009 A1
20090318884 Meyer et al. Dec 2009 A1
20090326494 Uchida et al. Dec 2009 A1
20100051166 Hundorf Mar 2010 A1
20100062165 Suzuki et al. Mar 2010 A1
20100062934 Suzuki et al. Mar 2010 A1
20100063470 Suzuki et al. Mar 2010 A1
20100068520 Stueven Mar 2010 A1
20100100065 Bianco et al. Apr 2010 A1
20100115237 Brewer et al. May 2010 A1
20100121296 Noda et al. May 2010 A1
20100137773 Gross et al. Jun 2010 A1
20100137823 Corneliusson et al. Jun 2010 A1
20100198179 Noda et al. Aug 2010 A1
20100228210 Busam Sep 2010 A1
20100241096 Lavon et al. Sep 2010 A1
20100241097 Nigam et al. Sep 2010 A1
20100262099 Klofta Oct 2010 A1
20100262104 Carlucci et al. Oct 2010 A1
20100274208 Gabrielii et al. Oct 2010 A1
20100274210 Noda et al. Oct 2010 A1
20100312208 Bond et al. Dec 2010 A1
20100324521 Mukai et al. Dec 2010 A1
20100324523 Mukai et al. Dec 2010 A1
20110041999 Hundorf et al. Feb 2011 A1
20110060301 Nishikawa et al. Mar 2011 A1
20110060303 Bissah et al. Mar 2011 A1
20110066127 Kuwano et al. Mar 2011 A1
20110071486 Harada et al. Mar 2011 A1
20110092944 Sagisaka et al. Apr 2011 A1
20110112498 Nhan et al. May 2011 A1
20110125120 Nishitani et al. May 2011 A1
20110130732 Jackels et al. Jun 2011 A1
20110130737 Sagisaka et al. Jun 2011 A1
20110137274 Klofta Jun 2011 A1
20110137276 Yoshikawa Jun 2011 A1
20110144602 Long Jun 2011 A1
20110144604 Noda et al. Jun 2011 A1
20110144606 Nandrea et al. Jun 2011 A1
20110152813 Ellingson Jun 2011 A1
20110166540 Yang Jul 2011 A1
20110172630 Nomoto et al. Jul 2011 A1
20110174430 Zhao et al. Jul 2011 A1
20110196330 Hammons Aug 2011 A1
20110208147 Kawakami et al. Aug 2011 A1
20110250413 Lu Oct 2011 A1
20110268932 Catalan Nov 2011 A1
20110274834 Brown et al. Nov 2011 A1
20110288513 Hundorf et al. Nov 2011 A1
20110288514 Kuroda et al. Nov 2011 A1
20110295222 Becker et al. Dec 2011 A1
20110319846 Rinnert et al. Dec 2011 A1
20110319848 Mckiernan Dec 2011 A1
20110319851 Kudo et al. Dec 2011 A1
20120004633 R Marcelo Jan 2012 A1
20120016326 Brennan et al. Jan 2012 A1
20120022479 Cotton Jan 2012 A1
20120035566 Sagisaka et al. Feb 2012 A1
20120035576 Ichikawa et al. Feb 2012 A1
20120064792 Bauduin Mar 2012 A1
20120071848 Zhang et al. Mar 2012 A1
20120165771 Ruman et al. Jun 2012 A1
20120165776 Mcgregor Jun 2012 A1
20120170779 Hildebrandt Jul 2012 A1
20120175056 Tsang et al. Jul 2012 A1
20120184934 Venturino et al. Jul 2012 A1
20120232514 Baker et al. Sep 2012 A1
20120238977 Oku et al. Sep 2012 A1
20120253306 Otsubo et al. Oct 2012 A1
20120256750 Novak Oct 2012 A1
20120271262 Venturino et al. Oct 2012 A1
20120312491 Jackels Dec 2012 A1
20120316046 Jackels et al. Dec 2012 A1
20120316523 Hippe Dec 2012 A1
20120316526 Rosati et al. Dec 2012 A1
20120316528 Kreuzer et al. Dec 2012 A1
20120316529 Kreuzer et al. Dec 2012 A1
20120323195 Ehrnsperger et al. Dec 2012 A1
20120323201 Bissah et al. Dec 2012 A1
20120323202 Bissah et al. Dec 2012 A1
20130035656 Moriya et al. Feb 2013 A1
20130041334 Prioleau et al. Feb 2013 A1
20130178811 Kikuchi et al. Jul 2013 A1
20130211354 Tsuji et al. Aug 2013 A1
20130211358 Kikkawa et al. Aug 2013 A1
20130218115 Katsuragawa et al. Aug 2013 A1
20130226119 Katsuragawa et al. Aug 2013 A1
20130226120 Van De Maele Aug 2013 A1
20130310784 Bryant Nov 2013 A1
20140005622 Wirtz Jan 2014 A1
20140005623 Wirtz et al. Jan 2014 A1
20140027066 Jackels et al. Jan 2014 A1
20140039437 Van De Maele Feb 2014 A1
20140045683 Loick et al. Feb 2014 A1
20140102183 Agami et al. Apr 2014 A1
20140121623 Kirby May 2014 A1
20140135726 Busam et al. May 2014 A1
20140142531 Sasayama et al. May 2014 A1
20140163500 Roe et al. Jun 2014 A1
20140163501 Ehrnsperger et al. Jun 2014 A1
20140163502 Arizti Jun 2014 A1
20140163503 Arizti Jun 2014 A1
20140163506 Roe Jun 2014 A1
20140163511 Roe et al. Jun 2014 A1
20140171893 Lawson et al. Jun 2014 A1
20140318694 Blessing et al. Oct 2014 A1
20140324007 Hundorf et al. Oct 2014 A1
20140324008 Hundorf et al. Oct 2014 A1
20150065981 Roe Mar 2015 A1
20150065986 Blessing et al. Mar 2015 A1
20150080837 Rosati et al. Mar 2015 A1
20150080839 Trapp et al. Mar 2015 A1
20150173967 Kreuzer Jun 2015 A1
20150173968 Joseph Jun 2015 A1
20150250662 Isele et al. Sep 2015 A1
20180153954 Rosati et al. Jun 2018 A1
20190365849 Rosati et al. Dec 2019 A1
20200390615 Kreuzer et al. Dec 2020 A1
Foreign Referenced Citations (574)
Number Date Country
2001370 Apr 1990 CA
2291997 Jun 2000 CA
2308961 Nov 2000 CA
2487027 Dec 2003 CA
2561521 Mar 2007 CA
2630713 Nov 2008 CA
2636673 Jan 2009 CA
2702001 Oct 2010 CA
2712563 Mar 2011 CA
1238171 Dec 1999 CN
2362468 Feb 2000 CN
1371671 Oct 2002 CN
2527254 Dec 2002 CN
2535020 Feb 2003 CN
2548609 May 2003 CN
1539391 Oct 2004 CN
1939242 Apr 2007 CN
101292930 Oct 2008 CN
201263750 Jul 2009 CN
201591689 Sep 2010 CN
201855366 Jun 2011 CN
3205931 Sep 1983 DE
3205931 Aug 1985 DE
3608114 Sep 1987 DE
19732499 Feb 1999 DE
10204937 Aug 2003 DE
0067916 Dec 1982 EP
0083022 Jul 1983 EP
0149880 Jul 1985 EP
149880 Jul 1985 EP
0203289 Dec 1986 EP
0206208 Dec 1986 EP
0209561 Jan 1987 EP
0297411 Jan 1989 EP
0304957 Mar 1989 EP
0374542 Jun 1990 EP
0403832 Dec 1990 EP
0481322 Apr 1992 EP
0530438 Mar 1993 EP
0547847 Jun 1993 EP
0555346 Aug 1993 EP
0559476 Sep 1993 EP
0597273 May 1994 EP
0632068 Jan 1995 EP
0640330 Mar 1995 EP
0668066 Sep 1995 EP
0685214 Dec 1995 EP
0687453 Dec 1995 EP
0689817 Jan 1996 EP
0691133 Jan 1996 EP
0700673 Mar 1996 EP
0394274 Jul 1996 EP
0724418 Aug 1996 EP
0725613 Aug 1996 EP
0725615 Aug 1996 EP
0725616 Aug 1996 EP
0737055 Oct 1996 EP
0752892 Jan 1997 EP
0758543 Feb 1997 EP
0761194 Mar 1997 EP
0769284 Apr 1997 EP
0778762 Jun 1997 EP
0781537 Jul 1997 EP
0787472 Aug 1997 EP
0790839 Aug 1997 EP
0796068 Sep 1997 EP
0799004 Oct 1997 EP
0826351 Mar 1998 EP
0844861 Jun 1998 EP
0863733 Sep 1998 EP
971751 Sep 1998 EP
0875224 Nov 1998 EP
0880955 Dec 1998 EP
0891758 Jan 1999 EP
0893115 Jan 1999 EP
0904755 Mar 1999 EP
0916327 May 1999 EP
0925769 Jun 1999 EP
0933074 Aug 1999 EP
0937736 Aug 1999 EP
0788874 Sep 1999 EP
0941157 Sep 1999 EP
0947549 Oct 1999 EP
0951890 Oct 1999 EP
0953326 Nov 1999 EP
0962208 Dec 1999 EP
0963749 Dec 1999 EP
0978263 Feb 2000 EP
1005847 Jun 2000 EP
1008333 Jun 2000 EP
0822794 Jul 2000 EP
1018999 Jul 2000 EP
1022008 Jul 2000 EP
1023884 Aug 2000 EP
1053729 Nov 2000 EP
1059072 Dec 2000 EP
1063954 Jan 2001 EP
1071388 Jan 2001 EP
1078618 Feb 2001 EP
1088537 Apr 2001 EP
0796068 May 2001 EP
1116479 Jul 2001 EP
1132069 Sep 2001 EP
1173128 Jan 2002 EP
1184018 Mar 2002 EP
1199059 Apr 2002 EP
1199327 Apr 2002 EP
1208824 May 2002 EP
1210925 Jun 2002 EP
1224922 Jul 2002 EP
1225857 Jul 2002 EP
1253231 Oct 2002 EP
1262531 Dec 2002 EP
0737056 Jan 2003 EP
1275358 Jan 2003 EP
1275361 Jan 2003 EP
1293187 Mar 2003 EP
1339368 Sep 2003 EP
1374817 Jan 2004 EP
1388334 Feb 2004 EP
1402863 Mar 2004 EP
0591647 Apr 2004 EP
0601610 Aug 2004 EP
1447066 Aug 2004 EP
1447067 Aug 2004 EP
1460987 Sep 2004 EP
1263374 Nov 2004 EP
1495739 Jan 2005 EP
1524955 Apr 2005 EP
1541103 Jun 2005 EP
1551344 Jul 2005 EP
1586289 Oct 2005 EP
1588723 Oct 2005 EP
IN0984KOL1999 Oct 2005 EP
1605882 Dec 2005 EP
1609448 Dec 2005 EP
1019003 Jan 2006 EP
1621166 Feb 2006 EP
1621167 Feb 2006 EP
1632206 Mar 2006 EP
985397 Apr 2006 EP
1642556 Apr 2006 EP
1403419 May 2006 EP
1656162 May 2006 EP
1669046 Jun 2006 EP
1019002 Aug 2006 EP
1688114 Aug 2006 EP
1723939 Nov 2006 EP
1192312 Dec 2006 EP
1013252 Jan 2007 EP
1738727 Jan 2007 EP
1754461 Feb 2007 EP
1787611 May 2007 EP
1175194 Jun 2007 EP
1813238 Aug 2007 EP
1304986 Nov 2007 EP
1920743 May 2008 EP
1332742 Jun 2008 EP
2008626 Dec 2008 EP
2055279 May 2009 EP
IN0980MUM2009 Jun 2009 EP
2093049 Aug 2009 EP
2130522 Dec 2009 EP
0951887 Jan 2010 EP
1621165 Apr 2010 EP
0783877 Aug 2010 EP
2246021 Nov 2010 EP
2295493 Mar 2011 EP
2305749 Apr 2011 EP
2314265 Apr 2011 EP
2330152 Jun 2011 EP
1196122 Nov 2011 EP
2444046 Apr 2012 EP
2532328 Dec 2012 EP
2532329 Dec 2012 EP
2532332 Dec 2012 EP
2679210 Jan 2014 EP
2740449 Jun 2014 EP
2740450 Jun 2014 EP
2740452 Jun 2014 EP
2813201 Dec 2014 EP
2851048 Mar 2015 EP
2886093 Jun 2015 EP
2905000 Aug 2015 EP
2905001 Aug 2015 EP
2979671 Feb 2016 EP
3111903 Jan 2017 EP
3167859 May 2017 EP
3266430 Jan 2018 EP
3284449 Feb 2018 EP
3284450 Feb 2018 EP
3351225 Jul 2018 EP
3473222 Apr 2019 EP
3473223 Apr 2019 EP
3473224 Apr 2019 EP
0793469 Jun 2020 EP
2213491 Aug 2004 ES
2566631 Jan 1986 FR
2583377 Dec 1986 FR
2612770 Sep 1988 FR
2810234 Dec 2001 FR
1307441 Feb 1973 GB
1333081 Oct 1973 GB
1513055 Jun 1978 GB
2101468 Jan 1983 GB
2170108 Jul 1986 GB
2262873 Jul 1993 GB
2288540 Oct 1995 GB
2354449 Mar 2001 GB
2452260A Mar 2009 GB
851769 Nov 1985 GR
208543 Oct 2006 IN
212479 Feb 2007 IN
5572928 May 1980 JP
598322 Jan 1984 JP
63148323 Sep 1988 JP
2107250 Apr 1990 JP
03224481 Oct 1991 JP
04122256 Apr 1992 JP
04341368 Nov 1992 JP
06191505 Jul 1994 JP
06269475 Sep 1994 JP
07124193 May 1995 JP
08215629 Aug 1996 JP
H10137286 May 1998 JP
H10295728 Nov 1998 JP
10328232 Dec 1998 JP
11033056 Feb 1999 JP
11318980 Nov 1999 JP
11320742 Nov 1999 JP
2000232985 Aug 2000 JP
2000238161 Sep 2000 JP
2001037810 Feb 2001 JP
2001046435 Feb 2001 JP
2001120597 May 2001 JP
2001158074 Jun 2001 JP
2001178768 Jul 2001 JP
2001198157 Jul 2001 JP
2001224626 Aug 2001 JP
2001277394 Oct 2001 JP
03420481 Nov 2001 JP
2001321397 Nov 2001 JP
2001353174 Dec 2001 JP
2002052042 Feb 2002 JP
2002065718 Mar 2002 JP
2002113800 Apr 2002 JP
2002165832 Jun 2002 JP
2002165836 Jun 2002 JP
2002178429 Jun 2002 JP
2002272769 Sep 2002 JP
2002320641 Nov 2002 JP
2002325792 Nov 2002 JP
2002325799 Nov 2002 JP
2002369841 Dec 2002 JP
2003126140 May 2003 JP
2003153955 May 2003 JP
2003265523 Sep 2003 JP
2003265524 Sep 2003 JP
2003275237 Sep 2003 JP
2003325563 Nov 2003 JP
2004089269 Mar 2004 JP
03566012 Jun 2004 JP
03568146 Jun 2004 JP
2004222868 Aug 2004 JP
03616077 Nov 2004 JP
2004337314 Dec 2004 JP
2004337385 Dec 2004 JP
2004350864 Dec 2004 JP
03640475 Jan 2005 JP
2005000312 Jan 2005 JP
2005006954 Jan 2005 JP
03660816 Mar 2005 JP
03676219 May 2005 JP
03688403 Jun 2005 JP
03705943 Aug 2005 JP
03719819 Sep 2005 JP
03724963 Sep 2005 JP
03725008 Sep 2005 JP
03737376 Nov 2005 JP
2006014792 Jan 2006 JP
03781617 Mar 2006 JP
2006110329 Apr 2006 JP
2006513824 Apr 2006 JP
03801449 May 2006 JP
2006116036 May 2006 JP
03850102 Sep 2006 JP
03850207 Sep 2006 JP
03856941 Sep 2006 JP
03868628 Oct 2006 JP
03874499 Nov 2006 JP
03877702 Nov 2006 JP
2006325639 Dec 2006 JP
2006346021 Dec 2006 JP
03904356 Jan 2007 JP
2007007455 Jan 2007 JP
2007007456 Jan 2007 JP
03926042 Mar 2007 JP
03934855 Mar 2007 JP
2007054219 Mar 2007 JP
2007089906 Apr 2007 JP
2007105198 Apr 2007 JP
2007152033 Jun 2007 JP
03986210 Jul 2007 JP
03986222 Jul 2007 JP
2007167453 Jul 2007 JP
2007175515 Jul 2007 JP
2007195665 Aug 2007 JP
2007267763 Oct 2007 JP
2007275491 Oct 2007 JP
04035341 Nov 2007 JP
04058281 Dec 2007 JP
04061086 Dec 2007 JP
04092319 Mar 2008 JP
2008080150 Apr 2008 JP
2008093289 Apr 2008 JP
04124322 May 2008 JP
2008119081 May 2008 JP
2008136739 Jun 2008 JP
2008136877 Jun 2008 JP
04148594 Jul 2008 JP
04148620 Jul 2008 JP
2008154606 Jul 2008 JP
04162609 Aug 2008 JP
04162637 Aug 2008 JP
04166923 Aug 2008 JP
04167406 Aug 2008 JP
04173723 Aug 2008 JP
4177770 Aug 2008 JP
04190675 Sep 2008 JP
04190693 Sep 2008 JP
04208338 Oct 2008 JP
2008246089 Oct 2008 JP
04230971 Dec 2008 JP
2008295475 Dec 2008 JP
2008295713 Dec 2008 JP
04261593 Feb 2009 JP
2009082481 Apr 2009 JP
2009112590 May 2009 JP
2009136601 Jun 2009 JP
2009142401 Jul 2009 JP
04322228 Aug 2009 JP
2009201878 Sep 2009 JP
04392936 Oct 2009 JP
2009232987 Oct 2009 JP
2009261777 Nov 2009 JP
2009291473 Dec 2009 JP
2009297048 Dec 2009 JP
2010017342 Jan 2010 JP
04458702 Feb 2010 JP
04459013 Feb 2010 JP
2010022560 Feb 2010 JP
04481325 Mar 2010 JP
2010051654 Mar 2010 JP
2010063814 Mar 2010 JP
2010063944 Mar 2010 JP
04492957 Apr 2010 JP
2010068954 Apr 2010 JP
2010075462 Apr 2010 JP
2010082059 Apr 2010 JP
2010088529 Apr 2010 JP
2010104545 May 2010 JP
2010104547 May 2010 JP
2010110535 May 2010 JP
2010119454 Jun 2010 JP
2010119605 Jun 2010 JP
2010119743 Jun 2010 JP
2010131131 Jun 2010 JP
2010131132 Jun 2010 JP
2010131206 Jun 2010 JP
2010131297 Jun 2010 JP
2010136917 Jun 2010 JP
2010136973 Jun 2010 JP
04540563 Jul 2010 JP
2010221067 Jul 2010 JP
4577766 Sep 2010 JP
04587947 Sep 2010 JP
2010194124 Sep 2010 JP
2010201093 Sep 2010 JP
2010273842 Sep 2010 JP
04620299 Nov 2010 JP
04627472 Nov 2010 JP
04627473 Nov 2010 JP
04638087 Dec 2010 JP
04652626 Dec 2010 JP
2010284418 Dec 2010 JP
2011030700 Feb 2011 JP
04693574 Mar 2011 JP
2011072720 Apr 2011 JP
2011000480 Jun 2011 JP
2011104014 Jun 2011 JP
2011104122 Jun 2011 JP
2011120661 Jun 2011 JP
2011125360 Jun 2011 JP
2011125537 Jun 2011 JP
04776516 Jul 2011 JP
2011067484 Jul 2011 JP
2011130797 Jul 2011 JP
2011130799 Jul 2011 JP
2011156032 Aug 2011 JP
2011156070 Aug 2011 JP
2011156254 Aug 2011 JP
04824882 Sep 2011 JP
4850272 Oct 2011 JP
04855533 Nov 2011 JP
2011239858 Dec 2011 JP
04931572 Feb 2012 JP
04953618 Mar 2012 JP
04969437 Apr 2012 JP
04969640 Apr 2012 JP
4971491 Apr 2012 JP
04974524 Apr 2012 JP
04979780 Apr 2012 JP
04937225 May 2012 JP
2012100886 May 2012 JP
05016020 Jun 2012 JP
05027364 Jun 2012 JP
5715806 Jun 2012 JP
2012115378 Jun 2012 JP
05031082 Jul 2012 JP
05042351 Jul 2012 JP
05043569 Jul 2012 JP
05043591 Jul 2012 JP
05046488 Jul 2012 JP
2012125452 Jul 2012 JP
2012125625 Jul 2012 JP
05053765 Aug 2012 JP
05070275 Aug 2012 JP
05079931 Sep 2012 JP
05080189 Sep 2012 JP
05084442 Sep 2012 JP
05084476 Sep 2012 JP
5085770 Sep 2012 JP
05089269 Sep 2012 JP
2012179286 Sep 2012 JP
05113146 Oct 2012 JP
05129536 Nov 2012 JP
2012223231 Nov 2012 JP
05105884 Dec 2012 JP
5291238 Jun 2013 JP
20010005620 Jan 2001 KR
20020035634 Nov 2002 KR
20080028771 Apr 2008 KR
9400916 Mar 1994 SE
9704893 Dec 1997 SE
9015830 Dec 1990 WO
9219198 Nov 1992 WO
9321237 Oct 1993 WO
9321879 Nov 1993 WO
9510996 Apr 1995 WO
9511652 May 1995 WO
9514453 Jun 1995 WO
9515139 Jun 1995 WO
9516424 Jun 1995 WO
9516746 Jun 1995 WO
9519753 Jul 1995 WO
9521596 Aug 1995 WO
9524173 Sep 1995 WO
9526209 Oct 1995 WO
9529657 Nov 1995 WO
9532698 Dec 1995 WO
9534329 Dec 1995 WO
96029967 Mar 1996 WO
9616624 Jun 1996 WO
9619173 Jun 1996 WO
9711659 Apr 1997 WO
9717922 May 1997 WO
9724096 Jul 1997 WO
9816179 Apr 1998 WO
9816180 Apr 1998 WO
9843684 Aug 1998 WO
9847454 Oct 1998 WO
9913813 Mar 1999 WO
9934841 Jul 1999 WO
9951178 Oct 1999 WO
200000235 Jan 2000 WO
200032145 Jun 2000 WO
200059430 Oct 2000 WO
200115647 Mar 2001 WO
200126596 Apr 2001 WO
200135886 May 2001 WO
200207663 Jan 2002 WO
200232962 Apr 2002 WO
02053363 Jul 2002 WO
2002064877 Aug 2002 WO
2002067809 Sep 2002 WO
2003009794 Feb 2003 WO
03017900 Mar 2003 WO
2003039402 May 2003 WO
2003053297 Jul 2003 WO
2003079946 Oct 2003 WO
2003101622 Oct 2003 WO
2003101622 Dec 2003 WO
2003105738 Dec 2003 WO
2004021946 Mar 2004 WO
2004049995 Jun 2004 WO
2004071539 Aug 2004 WO
2004084784 Oct 2004 WO
2004105664 Dec 2004 WO
2004110325 Dec 2004 WO
2005018694 Mar 2005 WO
2005087164 Sep 2005 WO
2005102237 Nov 2005 WO
2006059922 Jun 2006 WO
2006062258 Jun 2006 WO
2006066029 Jun 2006 WO
2006083584 Aug 2006 WO
2006104024 Oct 2006 WO
2006134904 Dec 2006 WO
2006134906 Dec 2006 WO
2007000315 Jan 2007 WO
2007046052 Apr 2007 WO
2007047598 Apr 2007 WO
2007049725 May 2007 WO
2007061035 May 2007 WO
2007141744 Dec 2007 WO
2007142145 Dec 2007 WO
2007148502 Dec 2007 WO
2008018922 Feb 2008 WO
2008065945 Jun 2008 WO
2008146749 Dec 2008 WO
2008155699 Dec 2008 WO
2009004941 Jan 2009 WO
2009005431 Jan 2009 WO
2009041223 Apr 2009 WO
2009096108 Aug 2009 WO
2009107435 Sep 2009 WO
2009110482 Sep 2009 WO
2009122830 Oct 2009 WO
2009139248 Nov 2009 WO
2009139255 Nov 2009 WO
2009152018 Dec 2009 WO
2009155264 Dec 2009 WO
2009155265 Dec 2009 WO
2010071508 Jun 2010 WO
2010074319 Jul 2010 WO
2010114052 Jul 2010 WO
2010107096 Sep 2010 WO
2010117015 Oct 2010 WO
2010118272 Oct 2010 WO
201153044 May 2011 WO
2011118725 Sep 2011 WO
2011118842 Sep 2011 WO
2011145653 Nov 2011 WO
2011150955 Dec 2011 WO
2011163582 Dec 2011 WO
2012002252 Jan 2012 WO
2012014436 Feb 2012 WO
2012042908 Apr 2012 WO
2012043077 Apr 2012 WO
2012043078 Apr 2012 WO
2012043082 Apr 2012 WO
2012052172 Apr 2012 WO
2012067216 May 2012 WO
2012073499 Jun 2012 WO
2012074466 Jun 2012 WO
201291016 Jul 2012 WO
2012090508 Jul 2012 WO
2012101934 Aug 2012 WO
2012102034 Aug 2012 WO
2012117764 Sep 2012 WO
2012117824 Sep 2012 WO
2012132460 Oct 2012 WO
2012170778 Dec 2012 WO
2012170779 Dec 2012 WO
2012170781 Dec 2012 WO
2012170808 Dec 2012 WO
2012174026 Dec 2012 WO
2012177400 Dec 2012 WO
2013001788 Jan 2013 WO
2013021651 Feb 2013 WO
2013046701 Apr 2013 WO
2013060733 May 2013 WO
2014073636 May 2014 WO
2014078247 May 2014 WO
Non-Patent Literature Citations (18)
Entry
Notice of Opposition for 17189089.0 dated Jan. 22, 2020, 33 pages.
Extended EP Search Report and Written Opinion for 17195395.3 dated Nov. 30, 2017, 8 pages.
All Office Actions; U.S. Appl. No. 15/887,341, filed Feb. 2, 2018.
All Office Actions; U.S. Appl. No. 16/541,267, filed Aug. 15, 2019.
Buchholz et al., “Modern Superabsorbent Polymer Technology”, Wiley-VCH, 1998, 8 pages.
Extended European Search Report and Written Opinion for 15201454.4 dated Dec. 1, 2016; 8 pages.
Extended European Search Report and Written Opinion for 17189089.0 dated Nov. 14, 2017; 8 pages.
Extended European Search Report and Written Opinion for 17195393.8 dated Nov. 29, 2017; 7 pages.
Extended European Search Report and Written Opinion for 18156474.1 dated May 8, 2018; 8 pages.
Extended European Search Report and Written Opinion for 18156475.8 dated May 8, 2018; 10 pages.
Extract from the textbook Absorbent Technology, Chatterjee et al.; vol. 13; 7 Pages (2002).
Hoffmann Eitle, Opposiiton EP 2 886 093 B I, Proprietor: The Procter & Gamble Company, Opponent: SCA Hygiene Products AB, Facts & Arguments, Jun. 21, 20017, 21 pages.
PCT Search Report and Written Opinion for PCT/US2012/041492 dated Jul. 27, 2012, 11 pages.
Notice of Opposition, EP3111903, Proprietor: The Procter & Gamble Company, Opponent: Ontex BVBA; 7 pages.
Third Party Opposition filed for 12727570.9 dated Feb. 23, 2017, 6 pages.
Third Party Opposition filed for 17189089.0 dated Jan. 22, 2020, 18 pages.
Third Party Opposition filed for 18156474.1 dated Feb. 15, 2021, 13 pages.
Third Party Opposition filed for 18156475.8 dated Jul. 28, 2020, 18 pages.
Related Publications (1)
Number Date Country
20220265487 A1 Aug 2022 US
Provisional Applications (1)
Number Date Country
61495401 Jun 2011 US
Continuations (3)
Number Date Country
Parent 16541267 Aug 2019 US
Child 17738485 US
Parent 15887341 Feb 2018 US
Child 16541267 US
Parent 13491642 Jun 2012 US
Child 15887341 US