Patent Application
20220010610
The disclosure herein relates generally to insulated glass units (IGUs) comprising two or more panes of glass having at least one pane, or a glass sheet component of at least one pane, that has a low coefficient of thermal expansion (CTE), e.g. less than about 70×10−7/° C. A low CTE center pane also allows for a thinner center pane, e.g. having a thickness of less than 0.9 mm. The disclosure also relates generally to insulated glass units (IGUs) comprising a laminated center pane comprising two low CTE glass sheets. The disclosure also relates generally to methods of manufacturing such IGUs, including those with one or more thin center panes, with at least one center pane including a low-emissivity (“low-E”) coating on at least one surface thereof.
Insulated glass units (IGUs) are useful as components in a wide variety of applications, including architectural, automobile, display, and appliance components. IGUs can be used as multi-pane windows in buildings or in automobiles to provide insulative properties from external environmental temperatures. An IGU typically comprises two or more panes of glass sealed at their peripheral edges by a seal. The panes are spaced apart, and the space between each pane, once sealed, can be filled with an inert gas, such as argon or krypton, or an inert gas mixture. In doing so, the insulative or thermal performance of the IGU can be improved. However, full benefit of the sealed insulating gas layer is typically achieved with the addition of one or more low emissivity (“low-E”) coatings on one or more surfaces of the panes. The low-E coatings serve to reduce the transfer of heat energy, from pane to pane, by radiation and absorption of radiation.
In addition to thermal and insulative performance, an IGU typically meets other design constraints, including for example, weight, thickness, light transmittance, mechanical strength, and/or manufacturing cost.
Triple pane IGUs (e.g., three panes of glass with two air cavities) exhibit improved thermal and insulative performance as compared to double pane IGUs (e.g., two panes of glass with one air cavity), as indicated by an improvement of approximately 20-30% or more in solar heat gain coefficient (SHGC) and/or insulative U-values. However, triple pane IGUs can exhibit undesirable weight, thickness and/or manufacturing cost. Further, the additional weight, thickness, and/or manufacturing cost associated with the additional pane can adversely affect the IGU such that it does not meet design requirements for certain applications.
It has previously been proposed to reduce the center pane thickness. But, because the center pane is insulated on both sides, it can reach much higher temperatures and therefore higher stress levels than the inner- and outer-facing panes, such that it is typically required that the glass of the center pane is heat strengthened to improve its mechanical strength sufficiently to resist stresses produced by thermal gradients. To develop adequate strengthening through thermal strengthening of soda lime window glass, a sheet thickness of at least 1.5-2 mm is generally required, preventing the use of very thin (e.g., less than 1 mm) glass and the resultant advantages of such very thin glass.
As noted above, although a thin center pane is desirable for weight savings, thermal tempering processes encounter difficulties in providing sufficient strength, on thin sheets, to resist the thermal stresses that arise in the center pane of the IGU. Further, the necessary handling and manipulation to cut and install a very thin sheet of glass as the center pane or layer of an IGE can be difficult to perform/achieve. One approach to overcome these difficulties is to employ a very thin glass sheet which has been chemically strengthened. Chemical strengthening can ease the handling requirements and allow the sheet to withstand the thermal stresses produced as a center pane. However, in windows designs in which a center pane requires one side or both sides to have low-E coatings, manufacturability is potentially a problem with such chemically strengthened thin sheet glass. For example, a Low-E coating is most efficiently performed on large sheets, but low-E coated sheets cannot be chemically strengthened. Further, if chemical strengthening is used on a large sheet which is later cut to size for a window, then cutting the sheet, while possible, is often a somewhat sensitive and difficult process with possible breakage losses. Such an outcome is not conducive for large scale manufacturing. Further, much or all of the chemically-enhanced strength at the edge of the sheet can be lost by the cutting process. Thus, the handling benefits of strengthening may not be realized, and the resultant economics of manufacturing may not be particularly beneficial. Alternatively, cutting to size first, then strengthening, then coating is also economically unattractive as a manufacturing process, because of the need for custom, individual-piece coating and strengthening. Moreover, lowering the thickness of the center pane tends to lower the acoustic performance (the noise attenuation) of the IGU. Thus, the necessary handling and manipulation to cut and install a very thin sheet of glass as the center pane or layer of an IGE having the needed design and performance characteristics can be difficult to perform and achieve.
The present disclosure relates to an insulated glass unit comprising a first pane, a second pane, and a third pane between the first and second panes, and a first sealed gap space between the first pane and the third pane and a second sealed gap space between the second pane and the third pane. The third pane comprises a first glass sheet having a coefficient of thermal expansion (CTE) over a temperature range of 0 to about 300° C. of less than about 70×10−7/° C. The third pane can comprise first and second glass sheets laminated together with a polymer interlayer, and the first and second glass sheets exhibit a coefficient of thermal expansion (CTE) over a temperature range 0 to about 300° C. of less than about 70×10−7/° C.
According to another embodiment of the present disclosure, an insulate glass unit (“IGU”) is described comprising an insulated glass unit (1101) further comprising a first pane, a second pane, a third pane and a fourth pane disposed between the first and second panes. A first sealed gap space is defined between the first pane and the third pane. A second sealed gap space is defined between the third pane and the fourth pane and a third sealed gap space is defined between the second pane and the fourth pane. The third pane comprises a first glass sheet having a coefficient of thermal expansion (CTE) over a temperature range 0 to about 300° C. of less than about 70×10−7/° C. The third pane can comprise first and second glass sheets laminated together with a polymer interlayer, and the first and second glass sheets have a coefficient of thermal expansion (CTE) over a temperature range 0 to about 300° C. of less than about 70×10−7/° C. The fourth pane can likewise comprise first and second glass sheets laminated together with a polymer interlayer, with the first and second glass sheets having a coefficient of thermal expansion (CTE) over a temperature range 0 to about 300° C. of less than about 70×10−7/° C.
According to still another embodiment of the present disclosure, a method of making an insulated glass unit comprises cutting a selected size third pane from a larger glass sheet, the larger glass sheet having a coefficient of thermal expansion (CTE) over a temperature range 0 to about 300° C. of less than about 70×10−7/° C., then assembling the third pane with a first and a second pane, or with a first, a second, a third, and a fourth pane, to form an insulated glass unit having the third pane positioned between the first and second panes with a first a first sealed gap space defined on one side of the third pane and a second sealed gap space defined on the other side of the third pane.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows, and in part will be readily apparent to those skilled in the art from that description or recognized by practicing the methods as described herein, including the detailed description which follows, the claims, as well as the appended drawings.
It is to be understood that both the foregoing general description and the following detailed description present various embodiments of the disclosure, and are intended to provide an overview or framework for understanding the nature and character of the claims. The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated into and constitute a part of this specification. The drawings illustrate various embodiments of the disclosure and, together with the description, serve to explain the principles and operations of the disclosure.
The following detailed description can be further understood when read in conjunction with the following drawings in which:
Various embodiments of the disclosure will now be discussed with reference to
Disclosed herein are insulated glass units (IGUs) comprising a first pane, a second pane, and a third pane disposed between the first and second panes. One embodiment of an IGU 1000 is illustrated in the cross section of
One embodiment of an IGU 1000 is illustrated in
According to various embodiments, first and second panes 110, 120 can be thicker than third pane 130. In some embodiments, first pane 110 is thicker than third pane 130. In other embodiments, second pane 120 is thicker than third pane 130. In some embodiments, panes 110, 120 can have a thickness ranging from about 2 mm to about 16 mm, alternatively about 2 mm to about 10 mm, such as from about 3 mm to about 8 mm, alternatively from about 4 mm to about 7 mm, or alternatively from about 5 mm to about 6 mm, including all ranges and subranges therebetween. In a non-limiting embodiment, the first and second panes 110, 120 can comprise soda lime glass, although other glass types can be used without limitation, such as aluminosilicate and alkali aluminosilicate glasses, or other like glasses. The coefficient of thermal expansion (CTE) of the first and/or second pane 110, 120 can, in various embodiments, be greater than about 70×10−7/° C., such as greater than about 75×10−7/° C., alternatively greater than about 80×10−7/° C., alternatively greater than about 85×10−7/° C., alternatively greater than about 90×10−7/° C., greater than about 95×10−7/° C., or alternatively greater than about 10×10−6/° C., including all ranges and subranges therebetween, e.g., ranging from about 70×10−7/° C. to about 15×10−6/° C.
According to various embodiments, one or both the first and second panes 110, 120 can be strengthened, e.g., by thermal tempering, chemical strengthening, or other like processes, to improve the mechanical strength of one or both of these layers. The first and second panes 110, 120 can, in some embodiments, be produced by float or fusion draw manufacturing processes.
In certain embodiments of the disclosure, the inner surface 114 of the first pane 110 can be partially or fully coated with at least one first coating 117 (as shown in
In non-limiting embodiments, third pane 130 can be thinner than first and second panes 110, 120. In some embodiments, the third pane 130 can have a total thickness of less than about 2 mm, such as from about 0.8 mm to less than about 2 mm, alternatively from about 0.9 mm to less than about 1.8 mm, alternatively from about 1 mm to less than about 1.7 mm, alternatively from about 1.1 mm to less than about 1.6 mm, or alternatively even to less than about 1.6 mm or alternatively even to less than about 1.5, about 1.4, about 1.2, or about 0.9 mm, including all ranges and subranges therebetween. According to still further aspects, the third pane 130 has a thickness of greater than about 0.4 mm, or alternatively greater than about 0.5 mm.
In a non-limiting embodiment, the third pane 130 can comprise a boro-silicate glass. In another a non-limiting embodiment, the third pane 130 can comprise a boro-aluminosilicate glass, such as an alkaline earth boro-aluminosilicate glass, or an alkali-free boro-aluminosilicate glass, or other similar glass types. Exemplary commercial glass products include, but are not limited to, Corning EAGLE XG®, and Lotus® glasses. The third pane 130 can, in some embodiments, be produced by float or fusion draw manufacturing processes.
According to various embodiments, the third pane 130 can have a lower CTE as compared to the CTE of the first pane 110 and/or second panes 120. As used herein, CTE refers to the coefficient of thermal expansion of an identified glass composition, or of a glass sheet or pane comprised thereof, as measured over a temperature range of 0 to about 300° C. In certain embodiments, the CTE of the third pane (CTE3) can be less than about 70×10−7/° C., such as less than about 60×10−7/° C., alternatively less than about 50×10−7/° C., alternatively less than about 45×10−7/° C., alternatively less than about 40×10−7/° C., alternatively less than about 35×10−7/° C., alternatively less than about 30×10−7/° C., or alternatively even less than about 25×10−7/° C., including all ranges and subranges therebetween, e.g., ranging from about 10×10−7/° C. to about 70×10−7/° C. In additional embodiments, the CTE of the first pane (CTE1) and/or the CTE of the second pane (CTE2) can be greater than the CTE of the third pane (CTE3), such as CTE1>CTE3 and/or CTE2>CTE3, or CTE1≥2*CTE3 and/or CTE2≥2*CTE3, or CTE1≥2.5*CTE3 and/or CTE2≥2.5*CTE3, or CTE1≥3*CTE3 and/or CTE2≥3*CTE3.
As mentioned, one or both major surfaces of third pane 130 can be partially or fully coated with at least one coating, such as the low emissivity coatings discussed above with respect to coatings 116, 117, 136. Alternatively, or additionally, one or both major surfaces of third pane 130 can be partially or fully patterned with ink and/or surface features, e.g., decorative ink, light scattering ink, and/or light scattering surface features. Bulk scattering features located within the glass matrix below the surface can also be provided in third pane 130, e.g., by laser patterning. Surface scattering features can also be produced by laser patterning. If a coating and/or pattern is provided on both major surfaces of third pane 130, these coatings and/or patterns can be the same or different depending upon the desired properties and/or end use of the IGU. Combinations of coatings and combinations of surface patterns can also be used. In additional embodiments, third pane 130 can comprise at least one coating and at least one of ink, surface features, and/or bulk features. Of course, the first and second panes 110, 120 can similarly be provided with such coatings, patterns, and/or features.
Referring again to
The gas pressure in first gap space 115 and second gap space 125 can be the same or different. The gas pressure difference can, for example, be due to a difference in the average gas temperature in the two spaces, e.g., gas in first gap space 115 can be warmer than gas in second gap space 125, or vice versa, depending on the relative ambient and interior temperatures. Differential pressure between the two gap spaces 115, 125 can be sufficient to bend or bow the third pane 130, depending on the thickness of this layer. To prevent bowing, at least one channel or opening in third pane 130 can be provided in some embodiments to allow gas in gap space 115 to contact gas in gap space 125. Openings can be provided, for example, by drilling one or more orifices or holes into the third pane 130, or by providing a pressure relief path or channel through the sealant assembly 118, 128.
Referring now to
In non-limiting embodiments, fourth pane 140 can be thinner than first and second panes 110, 120. In some embodiments, fourth pane 140 can be thinner than first and second panes 110, 120. In some embodiments, the fourth pane 140 can have a total thickness of less than about 2 mm, such as from about 0.8 mm to less than about 2 mm, alternatively from about 0.9 mm to less than about 1.8 mm, alternatively from about 1 mm to less than about 1.7 mm, alternatively from about 1.1 mm to less than about 1.6 mm, or alternatively even to less than about 1.6 mm or alternatively even to less than about 1.5, about 1.4, about 1.2 or about 0.9 mm, including all ranges and subranges therebetween. According to still further aspects, the fourth pane 140 has a thickness of greater than about 0.4 mm, or alternatively greater than about 0.5 mm. In some embodiments, the fourth pane 140 can be a glass laminate comprising first and second sheets of glass 141, 142 with an intermediate polymeric film or interlayer 143. The thickness of fourth pane 140 can be the same or different from the thickness of third pane 130.
In a non-limiting embodiment, the fourth pane 140 can comprise a boro-aluminosilicate glass, such as an alkaline earth boro-aluminosilicate glass, or an alkali-free boro-aluminosilicate glass, or other similar glass types. Exemplary commercial glass products include, but are not limited to, Corning EAGLE XG® and Lotus® glasses. According to various embodiments, fourth pane 140 can be strengthened, e.g., by thermal tempering, chemical strengthening, or other like processes, to improve the mechanical strength of this layer. The fourth pane 140 can, in some embodiments, be produced by float or fusion draw manufacturing processes. The composition of fourth pane 140 can be the same or different from the composition of third pane 130. The mechanical properties, e.g., degree of strengthening, of the fourth pane 140 can similarly be the same or different from the mechanical properties of the third pane 130.
According to various embodiments, the fourth pane 140 can have a lower CTE as compared to the CTE of the first and/or second panes 110, 120. In certain embodiments, the CTE of the fourth pane (CTE4) can be less than about 70×10−7/° C., such as less than about 60×10−7/° C., alternatively less than about 50×10−7/° C., alternatively less than about 45×10−7/° C., alternatively less than about 40×10−7/° C., alternatively less than about 35×10−7/° C., alternatively less than about 30×10−7/° C., or alternatively less than about 25×10−7/° C., including all ranges and subranges therebetween, e.g., ranging from about 10×10−7/° C. to about 70×10−7/° C. In additional embodiments, the CTE of the first pane (CTE1) and/or the CTE of the second pane (CTE2) can be greater than the CTE of the fourth pane (CTE4), such as CTE1>CTE4 and/or CTE2>CTE4, or CTE1≥2*CTE4 and/or CTE2≥2*CTE4, or CTE1≥2.5*CTE4 and/or CTE2≥2.5*CTE4, or CTE1≥3*CTE4 and/or CTE2≥3*CTE4. CTE3 and CTE4 can be identical or different. According to non-limiting embodiments, CTE3 is substantially equal to CTE4.
Although not illustrated in
Third pane 130 and the first pane 110 (e.g. outer pane) can be spaced apart and can define a first gap space 115 therebetween, third pane 130 and fourth pane 140 can be spaced apart and can define a second gap space 125 therebetween, and fourth pane 140 and second pane 120 (e.g. interior pane) can be spaced apart and can define a third gap space 135 therebetween. Gap spaces 115, 125, 135 can be hermetically sealed by a sealant assembly 118, 128, 138, which can be of one structure or of multiple pieces, with each identical or at least one different from the others. Exemplary sealant assemblies are disclosed above and exemplary inert gases and inert gas mixtures for filing the gap spaces are disclosed above with reference to
Referring to
It should be noted that while the first and second panes 110, 120 of
According to still further aspects of the present disclosure, the first pane 110 comprises a first polymer interlayer between the first glass sheet and the second glass sheet, wherein the first polymer interlayer is adhered to the first glass sheet and the second glass sheet. In some embodiments, the first polymer interlayer comprises a first polymer having a first elastic modulus and a second polymer having a second elastic modulus and wherein the first elastic modulus exceeds the second elastic modulus by at least about 20 times or more. Similarly, according to yet additional aspects, the second pane 120 comprises a third glass sheet and a fourth glass sheet and a second polymer interlayer between the third glass sheet and the fourth glass sheet, wherein the second polymer interlayer is adhered to the third glass sheet and the fourth glass sheet. In some embodiments, the second polymer interlayer comprises the first polymer and the second polymer. Again similarly, according to further additional aspects, the third pane 130 further comprises a fifth glass sheet 131 and a sixth glass sheet 132 and a third polymer interlayer 133 between the fifth glass sheet 131 and the sixth glass sheet 132, the third polymer interlayer 133 adhered to the fifth glass sheet 131 and the sixth glass sheet 132. In some embodiments, the third polymer interlayer 133 comprises the first polymer and the second polymer. Polymer interlayers having the first and second polymers help to reduce acoustic transmission.
The IGUs disclosed herein can be employed in various applications, and configured as products, including non-limiting examples of windows, doors, and skylights in buildings and other architectural applications, as windows in automobiles and other automotive applications, as windows or display panels in appliances, and as display panels in electronic devices, to name a few. According to various embodiments, one or more LEDs can be optically coupled to at least one edge of the IGU to provide illumination across one or more regions of the IGU. Edge lighting can, for instance, provide illumination that mimics sunlight, which can be useful in a variety of architectural and automotive applications, e.g., sky lights and sunroofs. As discussed above, one or more panes in the IGU can be provided with bulk or surface light scattering features, which can promote the uniformity of light transmitted by the IGU. Low CTE glass can, in some embodiments, be more easily laser processed to produce such light scattering features as compared to higher CTE glass, which often cracks or develops other defects during laser patterning.
In various non-limiting embodiments, using thin low CTE laminated glass for the center pane(s), e.g., the third and/or fourth panes, can provide several advantages over conventional IGUs. For example, a low CTE center pane can have improved resistance to thermal stresses and/or breakage caused by temperature gradients across the IGU, without requiring chemical or thermal strengthening. Manufacturing costs can thus be lowered by eliminating the thermal tempering or chemical strengthening step that would otherwise be used to strengthen a center pane comprising a conventional glass with a higher CTE.
Further, use of a laminated center pane as opposed to a single sheet of glass for the center pane can ease the physical handling requirements of the thin center pane and the fabrication handling requirements. Thus, in some embodiment of the present disclosure, the center pane may be comprised of sheets as thin as about 0.4 to about 0.7 mm, such that the laminated pane as a whole is still significantly thinner than even the thinnest conventional center panes. Use of the laminated center pane with polymer interlayer, particularly with an optional acoustic PVB polymer layer, improves acoustic dampening, which can help to offset reduction in sound attenuation otherwise produced by reducing the mass of the center pane.
Using a low CTE glass also enables a thinner pane to be economically provided with a low-E coating on one surface or both surfaces. Without the low CTE glass, strengthening would be needed to survive in the center pane location, and yet, thermal strengthening at <0.9 mm is difficult or not possible via conventional technology. Additionally, chemical strengthening is economically impractical because it is not compatible with pre-low-E-coated large sheets later cut to size, so the use of low CTE glass makes thin low-E coated sheets and panes comprising them realizable through the present technology described and claimed herein.
With reference to
According to another embodiment, a method for producing an IGU having a thin laminated center pane is shown in
Because thermal tempering of a center pane can be avoided, the optical performance of the IGU can be improved, e.g., due to the lack of warp or birefringence caused by such a treatment step. The absence of a thermal tempering step can also allow for a thinner center pane, resulting in a reduced thickness and/or weight of the overall IGU. Reduced IGU weight can result in cost savings during manufacture, transport, installation, maintenance, and/or operation. Reduced IGU thickness can expand the range of applications for the IGU that might otherwise be limited by conventional design constraints.
A thinner low CTE center layer can also allow for wider sealed gap spaces between the panes. A larger volume of insulating gas in the sealed gap spaces can improve the energy efficiency of the IGU. IGUs with narrow sealed gap spaces can have an increased risk of bowing due to contraction of gas within the gap spaces, which can lead to contact between the outer panes and the center pane(s). Such contact is cosmetically undesirable and also permits direct conduction of heat between the panes, which can be unacceptable from an energy standpoint. Use of thinner low CTE center panes can provide wider gaps and therefore reduce the potential risk of bowing and/or contact between panes.
Thermal stress leading to glass breakage in the IGU can be caused, e.g., by rapid temperature changes of one region of the IGU relative to another region of the IGU. For instance, a rapid rise in external (ambient) temperature as compared to the interior temperature, or vice versa, can produce thermal stress on one or more regions of the IGU. For example, on a cold morning, sunlight incident on a window can rapidly raise the temperature of the regions of the IGU exposed to the sunlight, while the perimeter of the IGU, e.g., disposed under a window frame, remains cold. Finite element analysis (FEA) modeling shows that the resulting thermal stress on the center pane can reach about 0.62 MPa/° C. of temperature difference for traditional soda lime glass. Alternatively, in summertime conditions, (e.g., ˜28° C.), the center pane can reach temperatures as high as about 60° C., resulting in a temperature difference as great as about 40° C. between the center pane and the outer panes. The resulting thermal stress on a center layer comprising soda lime glass can thus be about 25 MPa or greater.
Soda lime glass has a CTE of approximately 90×10−7/° C. By comparison, while Corning® EAGLE XG® glass has a CTE of 31.7×10−7/° C., approximately ⅓ of the CTE of soda lime glass. Under the same 40° thermal gradient described above, a center layer comprising EAGLE XG® glass would experience 8.7 MPa of thermal stress, resulting in a lower risk of breakage, even without thermal tempering or chemical strengthening.
Modeling was carried out to evaluate the use of low CTE glass as a center pane between two higher CTE panes in an IGU. The model assumed a three-layer IGU (length=1265 mm, width=989 mm) with an outer pane comprising soda lime glass (thickness=4 mm), an inner pane comprising soda lime glass (thickness=6 mm), and a center pane comprising EAGLE XG® glass (thickness=0.7 mm). The gaps between the center pane and the inner and outer panes were 12 mm wide, filled with argon gas, and sealed with a silicone rubber perimeter seal.
Referring to
It will be appreciated that the various disclosed embodiments can involve particular features, elements or steps that are described in connection with that particular embodiment. It will also be appreciated that a particular feature, element or step, although described in relation to one particular embodiment, can be interchanged or combined with alternate embodiments in various non-illustrated combinations or permutations.
It is also to be understood that, as used herein the terms “the,” “a,” or “an,” mean “at least one,” and should not be limited to “only one” unless explicitly indicated to the contrary. Thus, for example, reference to “a component” includes examples having one such “component” or two or more such “components” unless the context clearly indicates otherwise. Similarly, a “plurality” or an “array” is intended to denote two or more, such that an “array of components” or a “plurality of components” denotes two or more such components.
Ranges can be expressed herein as from “about” one particular value, and/or to “about” another particular value. When such a range is expressed, examples include from the one particular value and/or to the other particular value. Similarly, when values are expressed as approximations, by use of the antecedent “about,” it will be understood that the particular value forms another aspect. It will be further understood that the endpoints of each of the ranges are significant both in relation to the other endpoint, and independently of the other endpoint.
All numerical values expressed herein are to be interpreted as including “about,” whether or not so stated, unless expressly indicated otherwise. It is further understood, however, that each numerical value recited is precisely contemplated as well, regardless of whether it is expressed as “about” that value. Thus, “a dimension less than 100 nm” and “a dimension less than about 100 nm” both include embodiments of “a dimension less than about 100 nm” as well as “a dimension less than 100 nm.”
Unless otherwise expressly stated, it is in no way intended that any method set forth herein be construed as requiring that its steps be performed in a specific order. Accordingly, where a method claim does not actually recite an order to be followed by its steps or it is not otherwise specifically stated in the claims or descriptions that the steps are to be limited to a specific order, it is no way intended that any particular order be inferred.
While various features, elements or steps of particular embodiments can be disclosed using the transitional phrase “comprising,” it is to be understood that alternative embodiments, including those that can be described using the transitional phrases “consisting” or “consisting essentially of,” are implied. Thus, for example, implied alternative embodiments to a device comprising A+B+C include embodiments where a device consists of A+B+C, and embodiments where a device consists essentially of A+B+C.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present disclosure without departing from the spirit and scope of the disclosure. Since modifications combinations, sub-combinations and variations of the disclosed embodiments incorporating the spirit and substance of the disclosure can occur to persons skilled in the art, the disclosure should be construed to include everything within the scope of the appended claims and their equivalents.
This application claims the benefit of priority under 35 U.S.C. § 119 of U.S. Provisional Application Nos. 62/773,287, 62/773,378 and 62/773,382, all filed Nov. 30, 2018, the content each of which are incorporated herein by reference in their entireties.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/US2019/063226 | 11/26/2019 | WO | 00 |
| Number | Date | Country | |
|---|---|---|---|
| 62773287 | Nov 2018 | US | |
| 62773387 | Nov 2018 | US | |
| 62773382 | Nov 2018 | US |
