The present invention involves methods of preparing coated particulates and using such coated particulates in subterranean applications such as production enhancement and sand control. More particularly, the present invention relates to methods of preparing particulates coated with tackifying agent or resin that need not be immediately used once they are prepared.
Subterranean operations often use particulates coated with tackifying agents or resins. One example of a production stimulation operation using coated particulates is hydraulic fracturing, wherein a formation is treated to increase its permeability by hydraulically fracturing the formation to create or enhance one or more cracks or “fractures.” In most cases, a hydraulic fracturing treatment involves pumping a proppant-free, viscous fluid (known as a pad fluid) into a subterranean formation faster than the fluid can escape into the formation so that the pressure in the formation rises and the formation breaks, creating an artificial fracture or enlarging a natural fracture. Then a proppant is generally added to the fluid to form a slurry that is pumped into the fracture to prevent the fracture form closing when the pumping pressure is released. A portion of the proppant may be coated with a tackifying agent, inter alia, to control fines from migrating into the proppant pack. A portion of the proppant may also be coated with curable resin so that, once cured, the placed proppant forms a consolidated mass and prevents the proppant from flowing back during production of the well.
An example of a well completion operation using a treating fluid containing coated particulates is gravel packing. Gravel packing treatments are used, inter alia, to reduce the migration of unconsolidated formation particulates into the well bore. In gravel packing operations, particles known in the art as gravel are carried to a well bore by a hydrocarbon or water carrier fluid. That is, the particulates are suspended in a carrier fluid, which may be viscosified, and the carrier fluid is pumped into a well bore in which the gravel pack is to be placed. The carrier fluid leaks off into the subterranean zone and/or is returned to the surface while the particulates are left in the zone. The resultant gravel pack acts as a filter to separate formation sands from produced fluids while permitting the produced fluids to flow into the well bore. A portion of the gravel may be coated with resin or tackifying agent, inter alia, to further help control the migration of formation fines. Typically, gravel pack operations involve placing a gravel pack screen in the well bore and packing the surrounding annulus between the screen and the well bore with gravel designed to prevent the passage of formation sands through the pack. The gravel pack screen is generally a type of filter assembly used to support and retain the gravel placed during the gravel pack operation. A wide range of sizes and screen configurations are available to suit the characteristics of a particular well bore, the production fluid, and the subterranean formation sands. When installing the gravel pack, the gravel is carried to the formation in the form of a slurry by mixing the gravel with a viscosified carrier fluid. Once the gravel is placed in the well bore, the viscosity of the carrier fluid is reduced, and it is returned to the surface. Such gravel packs may be used to stabilize the formation while causing minimal impairment to well productivity. The gravel, inter alia, acts to prevent formation sands from occluding the screen or migrating with the produced fluids, and the screen, inter alia, acts to prevent the gravel from entering the well bore.
In some situations the processes of hydraulic fracturing and gravel packing are combined into a single treatment to provide stimulated production and an annular gravel pack to reduce formation sand production. Such treatments are often referred to as “frac pack” operations. In some cases, the treatments are completed with a gravel pack screen assembly in place, and the hydraulic fracturing treatment being pumped through the annular space between the casing and screen. In such a situation, the hydraulic fracturing treatment usually ends in a screen out condition creating an annular gravel pack between the screen and casing. This allows both the hydraulic fracturing treatment and gravel pack to be placed in a single operation.
The present invention involves methods of preparing coated particulates and using such coated particulates in subterranean applications such as production enhancement and sand control. More particularly, the present invention relates to methods of preparing particulates coated with tackifying agent or resin that need not be immediately used once they are prepared.
One embodiment of the present invention provides a method of preparing coated particulates comprising the steps of coating particulates with a resin or a tackifying agent to create pre-coated particulates; and, covering the pre-coated particulates with a partitioning agent to create coated particulates.
Another embodiment of the present invention provides a method of treating a subterranean formation comprising the steps of providing coated particulates made by a method comprising the steps of substantially coating particulates with a resin or a tackifying agent to create pre-coated particulates; and, substantially covering the pre-coated particulates with a partitioning agent to create coated particulates; substantially slurrying the coated particulates in a servicing fluid to create a coated particulate slurry; and, placing the coated particulate slurry into the subterranean formation.
Another embodiment of the present invention provides a method of propping a fracture in a subterranean formation comprising the steps of providing coated particulates made by a method comprising the steps of: substantially coating particulates with a resin or a tackifying agent to create pre-coated particulates; and, substantially covering the pre-coated particulates with a partitioning agent to create coated particulates; substantially slurrying the coated particulates in a fracturing fluid to create a coated particulate slurry; and, placing the coated particulate slurry into at least one fracture in the subterranean formation.
Another embodiment of the present invention provides a method of gravel packing comprising the steps of providing coated particulates made by a method comprising the steps of substantially coating particulates with a resin or a tackifying agent to create pre-coated particulates; and, substantially covering the pre-coated particulates with a partitioning agent to create coated particulates; substantially slurrying the coated particulates in a gravel packing fluid to create a coated particulates slurry; introducing the coated particulates slurry to a well bore such that the coated particulates form a gravel pack substantially adjacent to the well bore.
The features and advantages of the present invention will be readily apparent to those skilled in the art upon a reading of the description of preferred embodiments that follows.
The present invention involves methods of preparing coated particulates and using such coated particulates in subterranean applications such as production enhancement and sand control. More particularly, the present invention relates to methods of preparing particulates coated with tackifying agent or resin that need not be immediately used once they are prepared. By coating a partitioning agent onto particulates that have been coated with a tackifying agent or curable resin, the methods of the present invention are capable of temporarily diminishing the “tackiness” of the treated particulates, thus preventing or minimizing the agglomeration of the particulates and the spreading of the tackifying agent or curable resin onto equipment surfaces.
Some embodiments of the present invention describe methods of creating coated particulates that may be created and then stored and or shipped before use without excessive agglomeration. Particulates coated with tackifying agents and/or resins have a tendency to agglomerate and form masses of joined particulates rather than retaining their individual character. In the methods of the present invention, particulates are coated with a tackifying agent and/or resin and then the particulates are covered with a partitioning agent to help the particulates retain their individual tacky or curable character. In some embodiments of the present invention, the coated particulates may be created a few hours or a few weeks before they are used.
Particulates suitable for use in the present invention may be comprised of any material suitable for use in subterranean operations, including graded sand, bauxite, ceramic materials, glass materials, metal beads or balls, nut hulls, polymer beads, and the like. The particulate size generally may range from about 2 to about 400 on the U.S. Sieve Series, however, it is to be understood that in certain circumstances other sizes may be desired and will be entirely suitable for practice of the present invention. In some embodiments of the present invention, the particulate is graded sand having a particle size in the range of from about 10 to about 70 mesh, U.S. Sieve Series. It is within the ability of one skilled in the art, with the benefit of this disclosure, to select a suitable particulate composition and size.
Resins suitable for use in the present invention include, but are not limited to, two-component epoxy-based resins, furan-based resins, phenolic-based resins, high-temperature (HT) epoxy-based resins, and phenol/phenol formaldehyde/furfuryl alcohol resins. Selection of a suitable resin coating material may be affected by the temperature of the subterranean formation to which the fluid will be introduced. By way of example, for subterranean formations having a bottom hole static temperature (“BHST”) ranging from about 60° F. to about 250° F., two-component epoxy-based resins comprising a hardenable resin component and a hardening agent component containing specific hardening agents may be preferred. For subterranean formations having a BHST ranging from about 300° F. to about 600° F., a furan-based resin may be preferred. For subterranean formations having a BHST ranging from about 200° F. to about 400° F., either a phenolic-based resin or a one-component HT epoxy-based resin may be suitable. For subterranean formations having a BHST of at least about 175° F., a phenol/phenol formaldehyde/furfuryl alcohol resin also may be suitable.
One resin coating material suitable for use in the proppant compositions of the present invention is a two-component epoxy based resin comprising a hardenable resin component and a hardening agent component. The hardenable resin component is comprised of a hardenable resin and an optional solvent. The second component is the liquid hardening agent component, which is comprised of a hardening agent, a silane coupling agent, a surfactant, an optional hydrolyzable ester for, inter alia, breaking gelled fracturing fluid films on the proppant particles, and an optional liquid carrier fluid for, inter alia, reducing the viscosity of the liquid hardening agent component. It is within the ability of one skilled in the art with the benefit of this disclosure to determine if and how much liquid carrier fluid is needed to achieve a viscosity suitable to the subterranean conditions.
Examples of hardenable resins that can be used in the liquid hardenable resin component include, but are not limited to, organic resins such as bisphenol A-epichlorohydrin resin, polyepoxide resin, novolak resin, polyester resin, phenol-aldehyde resin, urea-aldehyde resin, furan resin, urethane resin, glycidyl ethers and mixtures thereof. In some embodiments of the present invention, the chosen resin is included in the liquid hardenable resin component in the range of from about 70% to about 100% by weight of the liquid hardenable resin component. Any solvent that is compatible with the hardenable resin and achieves the desired viscosity effect is suitable for use in the present invention. Preferred solvents are those having high flash points (most preferably about 125° F.).
Examples of the hardening agents that can be used in the liquid hardening agent component of the two-component consolidation fluids of the present invention include, but are not limited to, amines, aromatic amines, polyamines, aliphatic amines, cyclo-aliphatic amines, amides, polyamides, 2-ethyl-4-methyl imidazole and 1,1,3-trichlorotrifluoroacetone. Selection of a preferred hardening agent depends, in part, on the temperature of the formation in which the hardening agent will be used. By way of example and not of limitation, in subterranean formations having a temperature from about 60° F. to about 250° F., amines and cyclo-aliphatic amines such as piperidine, triethylamine, N,N-dimethylaminopyridine, benzyldimethylamine, tris(dimethylaminomethyl) phenol, and 2-(N2N-dimethylaminomethyl)phenol are preferred with N,N-dimethylaminopyridine most preferred. In subterranean formations having higher temperatures, 4,4′-diaminodiphenyl sulfone may be a suitable hardening agent. The hardening agent utilized is included in the liquid hardening agent component in an amount sufficient to consolidate the coated particulates. In some embodiments of the present invention, the hardening agent used is included in the liquid hardenable resin component in the range of from about 40% to about 60% by weight of the liquid hardening agent component.
Examples of silane coupling agents that can be used in the liquid hardening agent component of the two-component consolidation fluids of the present invention include, but are not limited to, N-2-(aminoethyl)-3-aminopropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, and n-beta-(aminoethyl)-gamma-aminopropyl trimethoxysilane. The silane coupling agent used is included in the liquid hardening agent component in an amount capable of sufficiently bonding the resin to the particulate. In some embodiments of the present invention, the silane coupling agent used is included in the liquid hardenable resin component in the range of from about 0.1% to about 3% by weight of the liquid hardening agent component.
Any surfactant compatible with the liquid hardening agent may be used in the present invention. Such surfactants include, but are not limited to, an ethoxylated nonyl phenol phosphate ester, mixtures of one or more cationic surfactants, and one or more non-ionic surfactants and an alkyl phosphonate surfactant. The mixtures of one or more cationic and nonionic surfactants are described in U.S. Pat. No. 6,311,773, issued to Todd et al. on Nov. 6, 2001, which is incorporated herein by reference. A C12- C22 alkyl phosphonate surfactant is preferred. The surfactant or surfactants used are included in the liquid hardening agent component in an amount in the range of from about 2% to about 15% by weight of the liquid hardening agent component.
Where the resin coating material of the present invention is a furan-based resin, suitable furan-based resins include, but are not limited to, furfuryl alcohol, a mixture furfuryl alcohol with an aldehyde, and a mixture of furan resin and phenolic resin. The furan-based resin may be combined with a solvent to control viscosity if desired. Suitable solvents for use in the furan-based consolidation fluids of the present invention include, but are not limited to 2-butoxy ethanol, butyl acetate, and furfuryl acetate.
Where the resin coating material of the present invention is a phenolic-based resin, suitable phenolic-based resins include, but are not limited to, terpolymers of phenol, phenolic formaldehyde resins, and a mixture of phenolic and furan resins. Of these, a mixture of phenolic and furan resins is preferred. The phenolic-based resin may be combined with a solvent to control viscosity if desired. Suitable solvents for use in the phenolic-based consolidation fluids of the present invention include, but are not limited to butyl acetate, butyl lactate, furfuryl acetate, and 2-butoxy ethanol.
Where the resin coating material of the present invention is a HT epoxy-based resin, suitable HT epoxy-based components included, but are not limited to, bisphenol A-epichlorohydrin resin, polyepoxide resin, novolac resin, polyester resin, glycidyl ethers and mixtures thereof. The HT epoxy-based resin may be combined with a solvent to control viscosity if desired. Suitable solvents for use with the HT epoxy-based resins of the present invention are those solvents capable of substantially dissolving the HT epoxy-resin chosen for use in the consolidation fluid. Such solvents include, but are not limited to, dimethyl sulfoxide and dimethyl formamide. A cosolvent such as dipropylene glycol methyl ether, dipropylene glycol dimethyl ether, dimethyl formamide, diethylene glycol methyl ether, ethylene glycol butyl ether, diethylene glycol butyl ether, propylene carbonate, d'limonene and fatty acid methyl esters, may also be used in combination with the solvent.
Yet another resin suitable for use in the methods of the present invention is a phenol/phenol formaldehyde/furfuryl alcohol resin comprising from about 5% to about 30% phenol, from about 40% to about 70% phenol formaldehyde, from about 10 to about 40% furfuryl alcohol, from about 0.1% to about 3% of a silane coupling agent, and from about 1% to about 15% of a surfactant. In the phenol/phenol formaldehyde/furfuryl alcohol resins suitable for use in the methods of the present invention, suitable silane coupling agents include, but are not limited to, n-2-(aminoethyl)-3-aminopropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, and n-beta-(aminoethyl)-gamma-aminopropyl trimethoxysilane. Suitable surfactants include, but are not limited to, an ethoxylated nonyl phenol phosphate ester, mixtures of one or more cationic surfactants and one or more non-ionic surfactants, and an alkyl phosphonate surfactant.
Compositions suitable for use as tackifying agents in the present invention comprise any compound that, when in liquid form or in a solvent solution, will form a non-hardening coating upon a particulate. A particularly preferred group of tackifying agents comprise polyamides that are liquids or in solution at the temperature of the subterranean formation such that they are, by themselves, non-hardening when introduced into the subterranean formation. A particularly preferred product is a condensation reaction product comprised of commercially available polyacids and a polyamine. Such commercial products include compounds such as mixtures of C36 dibasic acids containing some trimer and higher oligomers and also small amounts of monomer acids that are reacted with polyamines. Other polyacids include trimer acids, synthetic acids produced from fatty acids, maleic anhydride, acrylic acid, and the like. Such acid compounds are commercially available from companies such as Witco Corporation, Union Camp, Chemtall, and Emery Industries. The reaction products are available from, for example, Champion Technologies, Inc. and Witco Corporation. Additional compounds which may be used as tackifying compounds include liquids and solutions of, for example, polyesters, polycarbonates and polycarbamates, natural resins such as shellac and the like. Other suitable tackifying agents are described in U.S. Pat. No. 5,853,048 issued to Weaver, et al. and U.S. Pat. No. 5,833,000 issued to Weaver, et al., the relevant disclosures of which are herein incorporated by reference.
Tackifying agents suitable for use in the present invention may be either used such that they form non-hardening coating or they may be combined with a multifunctional material capable of reacting with the tackifying compound to form a hardened coating. A “hardened coating” as used herein means that the reaction of the tackifying compound with the multifunctional material will result in a substantially non-flowable reaction product that exhibits a higher compressive strength in a consolidated agglomerate than the tackifying compound alone with the particulates. In this instance, the tackifying agent may function similarly to a hardenable resin. Multifunctional materials suitable for use in the present invention include, but are not limited to, aldehydes such as formaldehyde, dialdehydes such as glutaraldehyde, hemiacetals or aldehyde releasing compounds, diacid halides, dihalides such as dichlorides and dibromides, polyacid anhydrides such as citric acid, epoxides, furfuraldehyde, glutaraldehyde or aldehyde condensates and the like, and combinations thereof. In some embodiments of the present invention, the multifunctional material may be admixed with the tackifying compound in an amount of from about 0.01 to about 50 percent by weight of the tackifying compound to effect formation of the reaction product. In some preferably embodiments, the compound is present in an amount of from about 0.5 to about 1 percent by weight of the tackifying compound. Suitable multifunctional materials are described in U.S. Pat. No. 5,839,510 issued to Weaver, et al., the relevant disclosure of which is herein incorporated by reference.
Partitioning agents suitable for use in the present invention are those substances that will dissipate once the particulates are introduced to a servicing fluid, such as a fracturing or gravel packing fluid. Moreover, partitioning agents suitable for use in the present invention should not interfere with the tackifying agent or resin pre-coated onto the particulate when it is used, and should not interfere with the servicing fluid. In preferred embodiments, the partitioning agent is coated onto the tackifying agent pre-coated or resin pre-coated particulate in an amount of from about 1% to about 20% by weight of the pre-coated particulate. In preferred embodiments, substantially the entire surface of the tackifying agent or resin coating is pre-coated with partitioning agent.
Partitioning agents suitable for use in the present invention are those materials that are capable of coating onto the resin or tackifying agent pre-coating the particulate and reducing the sticky character. Suitable partitioning agents may be substances that will quickly dissipate in the presence of the servicing fluid. Examples of suitable partitioning agents that will dissolve quickly in an aqueous servicing fluid include salts (such as rock salt, fine salt, KCl, and other solid salts known in the art), barium sulfate, benzoic acid, polyvinyl alcohol, sodium carbonate, sodium bicarbonate, and mixtures thereof. Examples of suitable partitioning agents that will dissolve in an oil-based servicing fluid include wax, gilsonite, sulfonated asphalt, naphthalenesulfonate, oil soluble resins including, but not limited to, styrene-isoprene copolymers, hydrogenated styrene-isoprene block copolymers, styrene ethylene/propylene block copolymers, styrene isobutylene copolymers, styrene-butadiene copolymers, polybutylene, polystyrene, polyethylene-propylene copolymers, and combinations of two or more thereof.
The partitioning agent also may be a substance that dissipates more slowly in the presence of the servicing fluid. Partitioning agents that dissolve more slowly allow the operator more time to place the coated particulates. Examples of suitable partitioning agents that will dissolve more slowly in an aqueous servicing fluid include calcium oxide, degradable polymers, such as polysaccharides; chitins; chitosans; proteins; aliphatic polyesters; poly(lactides); poly(glycolides); poly(ε-caprolactones); poly(hydroxybutyrates); poly(anhydrides); aliphatic polycarbonates; poly(orthoesters); poly(amino acids); poly(ethylene oxides); and poly(phosphazenes); and mixtures thereof. Examples of suitable partitioning agents that will dissolve more slowly in an oil-based servicing fluid include wax, gilsonite, sulfonated asphalt, oil soluble resins, and mixtures thereof.
The coated particulates of the present invention may be suspended in any servicing fluid known in the art, including aqueous gels, foams, emulsions, and viscosified surfactant fluids. Suitable aqueous gels are generally comprised of water and one or more gelling agents. The emulsions may be comprised of two or more immiscible liquids such as an aqueous gelled liquid and a liquefied, normally gaseous fluid, such as nitrogen. The preferred servicing fluids for use in accordance with this invention are aqueous gels comprised of water, a gelling agent for gelling the water and increasing its viscosity, and optionally, a cross-linking agent for cross-linking the gel and further increasing the viscosity of the fluid. The increased viscosity of the gelled or gelled and cross-linked servicing fluid, inter alia, reduces fluid loss and allows the fracturing fluid to transport significant quantities of suspended particulates. The servicing fluids also may include one or more of a variety of well-known additives such as breakers, stabilizers, fluid loss control additives, clay stabilizers, bactericides, and the like.
Some embodiments of the methods of the present invention provide methods for creating coated particulates comprising the steps of pre-coating particulates with a resin or a tackifying agent to create pre-coated particulates and then covering the pre-coated particulates with a partitioning agent to create coated particulates.
Other embodiments of the present invention provide a methods of treating a subterranean formation comprising the steps of providing coated particulates made by a method comprising the steps of substantially coating particulates with a resin or a tackifying agent to create pre-coated particulates; and, substantially covering the pre-coated particulates with a partitioning agent to create coated particulates; substantially slurrying the coated particulates in a servicing fluid to create a coated particulate slurry; and, placing the coated particulate slurry into the subterranean formation.
Other embodiments of the present invention provide methods of treating a subterranean formation comprising the steps of providing coated particulates made by a method comprising the steps of substantially coating particulates with a resin or a tackifying agent to create pre-coated particulates; and, substantially covering the pre-coated particulates with a partitioning agent to create coated particulates; substantially slurrying the coated particulates in a servicing fluid to create a coated particulate slurry; and, placing the coated particulate slurry into the subterranean formation.
Still other embodiments of the present invention provide methods of installing a gravel pack in a well bore comprising the steps of providing pre-coated particulates created by coating particulates with a resin or a tackifying agent to create pre-coated particulates and then covering the pre-coated particulates with a partitioning agent to create coated particulates and then substantially slurrying the pre-coated particulates in a gravel packing fluid to create a coated particulate slurry, and introducing the coated particulate slurry to the well bore such that the coated particulates form a gravel pack substantially adjacent to a well bore. The coating of partitioning agent on the pre-coated proppant is to temporarily diminish its tackiness, so that the effect of forming clusters or aggregates of proppant particulates is minimized. Large proppant clusters or aggregates tend to settle quickly and potentially cause bridging or premature screenout during gravel packing. In addition, large clusters or aggregates of proppant may also cause erosion of filtercake that has been placed for controlling fluid leak off during gravel placement of gravel pack operation.
To facilitate a better understanding of the present invention, the following examples of some of the preferred embodiments are given. In no way should such examples be read to limit the scope of the invention.
A sample of bauxite particulates was pre-coated with a high temperature epoxy resin and another sample was pre-coated with a furan resin; each sample contained 7.8 cc of resin per 250 grams of particulate. Sodium bicarbonate powder (20 grams) was then covered onto each of the resin coated samples to form coated particulates. The samples of particulates were stored at room temperature for three days. After that time the samples, still substantially non-agglomerated, were mixed in an aqueous-based fracturing fluid and formed , a slurry concentration of 7 pounds of particulates per gallon of fracturing fluid. The sodium bicarbonate covering dissolved as the particulates were mixed into the fracturing fluid. The coated particulates of the present invention proved capable of retaining their individual character even after being stored for a period of time.
The slurry was then crosslinked, stirred for an hour at 180° F., and then packed into a brass chamber and cured for at least 8 hours at 325° F. Core samples obtained from the cured particulates reflected consolidation strength of between 850 and 1,100 psi. Thus, the covering used to create the coated particulates did not act to impair consolidation.
Therefore, the present invention is well adapted to carry out the objects and attain the ends and advantages mentioned as well as those that are inherent therein. While numerous changes may be made by those skilled in the art, such changes are encompassed within the spirit and scope of this invention as defined by the appended claims.
This application is a divisional of application Ser. No. 10/794,076 filed on Mar. 5, 2004 now U.S. Pat. No. 7,063,151, now pending.
Number | Name | Date | Kind |
---|---|---|---|
2238671 | Woodhouse | Apr 1941 | A |
2703316 | Schneider | Mar 1955 | A |
2869642 | McKay et al. | Jan 1959 | A |
3047067 | Williams et al. | Jul 1962 | A |
3123138 | Robichaux | Mar 1964 | A |
3176768 | Brandt et al. | Apr 1965 | A |
3199590 | Young | Aug 1965 | A |
3272650 | MacVittie | Sep 1966 | A |
3297086 | Spain | Jan 1967 | A |
3308885 | Sandiford | Mar 1967 | A |
3316965 | Watanabe | May 1967 | A |
3336980 | Rike | Aug 1967 | A |
3375872 | McLaughlin et al. | Apr 1968 | A |
3404735 | Young et al. | Oct 1968 | A |
3415320 | Young | Dec 1968 | A |
3492147 | Young et al. | Jan 1970 | A |
3659651 | Graham | May 1972 | A |
3681287 | Brown et al. | Aug 1972 | A |
3708013 | Dismuke | Jan 1973 | A |
3709298 | Pramann | Jan 1973 | A |
3754598 | Holloway, Jr. | Aug 1973 | A |
3765804 | Brandon | Oct 1973 | A |
3768564 | Knox et al. | Oct 1973 | A |
3784585 | Schmitt et al. | Jan 1974 | A |
3819525 | Hattenbrurn | Jun 1974 | A |
3828854 | Templeton et al. | Aug 1974 | A |
3842911 | Know et al. | Oct 1974 | A |
3854533 | Gurley et al. | Dec 1974 | A |
3857444 | Copeland | Dec 1974 | A |
3863709 | Fitch | Feb 1975 | A |
3868998 | Lybarger et al. | Mar 1975 | A |
3888311 | Cooke, Jr. | Jun 1975 | A |
3912692 | Casey et al. | Oct 1975 | A |
3948672 | Harnsberger | Apr 1976 | A |
3955993 | Curtice | May 1976 | A |
3960736 | Free et al. | Jun 1976 | A |
4008763 | Lowe et al. | Feb 1977 | A |
4015995 | Hess | Apr 1977 | A |
4029148 | Emery | Jun 1977 | A |
4031958 | Sandiford et al. | Jun 1977 | A |
4042032 | Anderson | Aug 1977 | A |
4070865 | McLaughlin | Jan 1978 | A |
4074760 | Copeland et al. | Feb 1978 | A |
4085801 | Sifferman | Apr 1978 | A |
4127173 | Watkins et al. | Nov 1978 | A |
4169798 | DeMartino | Oct 1979 | A |
4172066 | Zweigle et al. | Oct 1979 | A |
4245702 | Haafkens et al. | Jan 1981 | A |
4273187 | Satter et al. | Jun 1981 | A |
4291766 | Davies et al. | Sep 1981 | A |
4305463 | Zakiewicz | Dec 1981 | A |
4336842 | Graham et al. | Jun 1982 | A |
4352674 | Fery | Oct 1982 | A |
4353806 | Canter et al. | Oct 1982 | A |
4387769 | Erbstoesser et al. | Jun 1983 | A |
4415805 | Fertl et al. | Nov 1983 | A |
4439489 | Johnson et al. | Mar 1984 | A |
4443347 | Underdown et al. | Apr 1984 | A |
4460052 | Gockel | Jul 1984 | A |
4470915 | Conway | Sep 1984 | A |
4493875 | Beck et al. | Jan 1985 | A |
4494605 | Wiechel et al. | Jan 1985 | A |
4498995 | Gockel | Feb 1985 | A |
4501328 | Nichols | Feb 1985 | A |
4526695 | Erbstoesser et al. | Jul 1985 | A |
4527627 | Graham et al. | Jul 1985 | A |
4541489 | Wu | Sep 1985 | A |
4546012 | Brooks | Oct 1985 | A |
4553596 | Graham et al. | Nov 1985 | A |
4564459 | Underdown et al. | Jan 1986 | A |
4572803 | Yamazoe et al. | Feb 1986 | A |
4585064 | Graham et al. | Apr 1986 | A |
4649998 | Friedman | Mar 1987 | A |
4664819 | Glaze et al. | May 1987 | A |
4665988 | Murphey et al. | May 1987 | A |
4669543 | Young | Jun 1987 | A |
4670501 | Dymond et al. | Jun 1987 | A |
4675140 | Sparks et al. | Jun 1987 | A |
4681165 | Bannister | Jul 1987 | A |
4683954 | Walker et al. | Aug 1987 | A |
4694905 | Armbruster | Sep 1987 | A |
4715967 | Bellis | Dec 1987 | A |
4716964 | Erbstoesser et al. | Jan 1988 | A |
4733729 | Copeland | Mar 1988 | A |
4739832 | Jennings, Jr. et al. | Apr 1988 | A |
4772646 | Harms et al. | Sep 1988 | A |
4777200 | Dymond et al. | Oct 1988 | A |
4785884 | Armbruster | Nov 1988 | A |
4787453 | Hewgill et al. | Nov 1988 | A |
4789105 | Hosokawa et al. | Dec 1988 | A |
4796701 | Hudson et al. | Jan 1989 | A |
4797262 | Dewitz | Jan 1989 | A |
4800960 | Friedman et al. | Jan 1989 | A |
4809783 | Hollenbeck et al. | Mar 1989 | A |
4817721 | Pober | Apr 1989 | A |
4829100 | Murphey et al. | May 1989 | A |
4838352 | Oberste-Padtberg et al. | Jun 1989 | A |
4842072 | Friedman et al. | Jun 1989 | A |
4843118 | Lai et al. | Jun 1989 | A |
4848467 | Cantu et al. | Jul 1989 | A |
4848470 | Korpics | Jul 1989 | A |
4850430 | Copeland et al. | Jul 1989 | A |
4886354 | Welch et al. | Dec 1989 | A |
4888240 | Graham et al. | Dec 1989 | A |
4895207 | Friedman et al. | Jan 1990 | A |
4903770 | Friedman et al. | Feb 1990 | A |
4934456 | Moradi-Araghi | Jun 1990 | A |
4936385 | Weaver et al. | Jun 1990 | A |
4942186 | Murphey et al. | Jul 1990 | A |
4957165 | Cantu et al. | Sep 1990 | A |
4959432 | Fan et al. | Sep 1990 | A |
4961466 | Himes et al. | Oct 1990 | A |
4969522 | Whitehurst et al. | Nov 1990 | A |
4969523 | Martin et al. | Nov 1990 | A |
4986353 | Clark et al. | Jan 1991 | A |
4986354 | Cantu et al. | Jan 1991 | A |
4986355 | Casad et al. | Jan 1991 | A |
5030603 | Rumpf et al. | Jul 1991 | A |
5049743 | Taylor, III et al. | Sep 1991 | A |
5082056 | Tackett, Jr. | Jan 1992 | A |
5095987 | Weaver et al. | Mar 1992 | A |
5105886 | Strubhar | Apr 1992 | A |
5107928 | Hilterhaus | Apr 1992 | A |
5128390 | Murphey et al. | Jul 1992 | A |
5135051 | Facteau et al. | Aug 1992 | A |
5142023 | Gruber et al. | Aug 1992 | A |
5165438 | Facteau et al. | Nov 1992 | A |
5173527 | Calve | Dec 1992 | A |
5178218 | Dees | Jan 1993 | A |
5182051 | Bandy et al. | Jan 1993 | A |
5199491 | Kutts et al. | Apr 1993 | A |
5199492 | Surles et al. | Apr 1993 | A |
5211234 | Floyd | May 1993 | A |
5216050 | Sinclair | Jun 1993 | A |
5218038 | Johnson et al. | Jun 1993 | A |
5232955 | Csabai et al. | Aug 1993 | A |
5232961 | Murphey et al. | Aug 1993 | A |
5238068 | Fredrickson | Aug 1993 | A |
5247059 | Gruber et al. | Sep 1993 | A |
5249627 | Harms et al. | Oct 1993 | A |
5249628 | Surjaatmadia | Oct 1993 | A |
5256729 | Kutts et al. | Oct 1993 | A |
5273115 | Spafford | Dec 1993 | A |
5278203 | Harms | Jan 1994 | A |
5285849 | Surles et al. | Feb 1994 | A |
5293939 | Surles et al. | Mar 1994 | A |
5295542 | Cole et al. | Mar 1994 | A |
5320171 | Laramay | Jun 1994 | A |
5321062 | Landrum et al. | Jun 1994 | A |
5325923 | Surjaatmadja et al. | Jul 1994 | A |
5330005 | Card et al. | Jul 1994 | A |
5332037 | Schmidt et al. | Jul 1994 | A |
5335726 | Rodrigues | Aug 1994 | A |
5351754 | Hardin et al. | Oct 1994 | A |
5358051 | Rodrigues | Oct 1994 | A |
5359026 | Gruber | Oct 1994 | A |
5360068 | Sprunt et al. | Nov 1994 | A |
5361856 | Surjaatmadja et al. | Nov 1994 | A |
5363916 | Himes et al. | Nov 1994 | A |
5373901 | Norman et al. | Dec 1994 | A |
5377759 | Surles | Jan 1995 | A |
5381864 | Nguyen et al. | Jan 1995 | A |
5386874 | Laramay et al. | Feb 1995 | A |
5388648 | Jordan, Jr. | Feb 1995 | A |
5393810 | Harris et al. | Feb 1995 | A |
5396957 | Surjaatmadja et al. | Mar 1995 | A |
5402846 | Jennings, Jr. et al. | Apr 1995 | A |
5422183 | Sinclair et al. | Jun 1995 | A |
5423381 | Surles et al. | Jun 1995 | A |
5439055 | Card et al. | Aug 1995 | A |
5460226 | Lawton et al. | Oct 1995 | A |
5464060 | Hale et al. | Nov 1995 | A |
5475080 | Gruber et al. | Dec 1995 | A |
5484881 | Gruber et al. | Jan 1996 | A |
5492178 | Nguyen et al. | Feb 1996 | A |
5494103 | Surjaatmadja et al. | Feb 1996 | A |
5494178 | Nguyen et al. | Feb 1996 | A |
5497830 | Boles et al. | Mar 1996 | A |
5498280 | Fistner et al. | Mar 1996 | A |
5499678 | Surjaatmadja et al. | Mar 1996 | A |
5501274 | Nguyen et al. | Mar 1996 | A |
5501275 | Card et al. | Mar 1996 | A |
5505787 | Yamaguchi | Apr 1996 | A |
5512071 | Yam et al. | Apr 1996 | A |
5520250 | Harry et al. | May 1996 | A |
5522460 | Shu | Jun 1996 | A |
5529123 | Carpenter et al. | Jun 1996 | A |
5531274 | Bienvenu, Jr. | Jul 1996 | A |
5536807 | Gruber et al. | Jul 1996 | A |
5545824 | Stengel et al. | Aug 1996 | A |
5547023 | McDaniel et al. | Aug 1996 | A |
5551513 | Suries et al. | Sep 1996 | A |
5551514 | Nelson et al. | Sep 1996 | A |
5582249 | Caveny et al. | Dec 1996 | A |
5582250 | Constien | Dec 1996 | A |
5588488 | Vijn et al. | Dec 1996 | A |
5591700 | Harris et al. | Jan 1997 | A |
5594095 | Gruber et al. | Jan 1997 | A |
5595245 | Scott, III | Jan 1997 | A |
5597784 | Sinclair et al. | Jan 1997 | A |
5604184 | Ellis et al. | Feb 1997 | A |
5604186 | Hunt et al. | Feb 1997 | A |
5609207 | Dewprashad et al. | Mar 1997 | A |
5620049 | Gipson et al. | Apr 1997 | A |
5639806 | Johnson et al. | Jun 1997 | A |
5670473 | Scepanski | Sep 1997 | A |
5692566 | Surles | Dec 1997 | A |
5697440 | Weaver et al. | Dec 1997 | A |
5698322 | Tsai et al. | Dec 1997 | A |
5712314 | Surles et al. | Jan 1998 | A |
5732364 | Kalb et al. | Mar 1998 | A |
5765642 | Surjaatmadja | Jun 1998 | A |
5775425 | Weaver et al. | Jul 1998 | A |
5782300 | James et al. | Jul 1998 | A |
5783822 | Buchanan et al. | Jul 1998 | A |
5787986 | Weaver et al. | Aug 1998 | A |
5791415 | Nguyen et al. | Aug 1998 | A |
5799734 | Norman et al. | Sep 1998 | A |
5806593 | Suries | Sep 1998 | A |
5830987 | Smith | Nov 1998 | A |
5833000 | Weaver et al. | Nov 1998 | A |
5833361 | Funk | Nov 1998 | A |
5836391 | Jonasson et al. | Nov 1998 | A |
5836392 | Urlwin-Smith | Nov 1998 | A |
5837656 | Sinclair et al. | Nov 1998 | A |
5837785 | Kinsho et al. | Nov 1998 | A |
5839510 | Weaver et al. | Nov 1998 | A |
5840784 | Funkhouser et al. | Nov 1998 | A |
5849401 | El-Afandi et al. | Dec 1998 | A |
5849590 | Anderson, II et al. | Dec 1998 | A |
5853048 | Weaver et al. | Dec 1998 | A |
5864003 | Qureshi et al. | Jan 1999 | A |
5865936 | Edelman et al. | Feb 1999 | A |
5871049 | Weaver et al. | Feb 1999 | A |
5873413 | Chatterji et al. | Feb 1999 | A |
5875844 | Chatterji et al. | Mar 1999 | A |
5875845 | Chatterji et al. | Mar 1999 | A |
5875846 | Chatterji et al. | Mar 1999 | A |
5893383 | Facteau | Apr 1999 | A |
5893416 | Read | Apr 1999 | A |
5908073 | Nguyen et al. | Jun 1999 | A |
5911282 | Onan et al. | Jun 1999 | A |
5916933 | Johnson et al. | Jun 1999 | A |
5921317 | Dewprashad et al. | Jul 1999 | A |
5924488 | Nguyen et al. | Jul 1999 | A |
5929437 | Elliott et al. | Jul 1999 | A |
5944105 | Nguyen | Aug 1999 | A |
5945387 | Chatterji et al. | Aug 1999 | A |
5948734 | Sinclair et al. | Sep 1999 | A |
5957204 | Chatterji et al. | Sep 1999 | A |
5960877 | Funkhouser | Oct 1999 | A |
5960878 | Nguyen et al. | Oct 1999 | A |
5960880 | Nguyen et al. | Oct 1999 | A |
5964291 | Bourne et al. | Oct 1999 | A |
5969006 | Onan et al. | Oct 1999 | A |
5977283 | Rossitto | Nov 1999 | A |
5994785 | Higuchi et al. | Nov 1999 | A |
RE36466 | Nelson et al. | Dec 1999 | E |
6003600 | Nguyen et al. | Dec 1999 | A |
6004400 | Bishop et al. | Dec 1999 | A |
6006835 | Onan et al. | Dec 1999 | A |
6006836 | Chatterji et al. | Dec 1999 | A |
6012524 | Chatterji et al. | Jan 2000 | A |
6016870 | Dewprashad et al. | Jan 2000 | A |
6024170 | McCabe et al. | Feb 2000 | A |
6028113 | Scepanski | Feb 2000 | A |
6028534 | Ciglenec et al. | Feb 2000 | A |
6040398 | Kinsho et al. | Mar 2000 | A |
6047772 | Weaver et al. | Apr 2000 | A |
6059034 | Rickards et al. | May 2000 | A |
6059035 | Chatterji et al. | May 2000 | A |
6059036 | Chatterji et al. | May 2000 | A |
6068055 | Chatterji et al. | May 2000 | A |
6069117 | Onan et al. | May 2000 | A |
6074739 | Katagiri | Jun 2000 | A |
6079492 | Hoogteijling et al. | Jun 2000 | A |
6098711 | Chatterji et al. | Aug 2000 | A |
6114410 | Betzold | Sep 2000 | A |
6123871 | Carroll | Sep 2000 | A |
6123965 | Jacon et al. | Sep 2000 | A |
6124246 | Heathman et al. | Sep 2000 | A |
6130286 | Thomas et al. | Oct 2000 | A |
6135987 | Tsai et al. | Oct 2000 | A |
6140446 | Fujiki et al. | Oct 2000 | A |
6148911 | Gipson et al. | Nov 2000 | A |
6152234 | Newhouse et al. | Nov 2000 | A |
6162766 | Muir et al. | Dec 2000 | A |
6169058 | Le et al. | Jan 2001 | B1 |
6172011 | Card et al. | Jan 2001 | B1 |
6172077 | Curtis et al. | Jan 2001 | B1 |
6176315 | Reddy et al. | Jan 2001 | B1 |
6177484 | Surles | Jan 2001 | B1 |
6184311 | O'Keffe et al. | Feb 2001 | B1 |
6187834 | Thayer et al. | Feb 2001 | B1 |
6187839 | Eoff | Feb 2001 | B1 |
6189615 | Sydansk | Feb 2001 | B1 |
6192985 | Hinkel et al. | Feb 2001 | B1 |
6192986 | Urlwin-Smith | Feb 2001 | B1 |
6196317 | Hardy | Mar 2001 | B1 |
6202751 | Chatterji et al. | Mar 2001 | B1 |
6209643 | Nguyen et al. | Apr 2001 | B1 |
6209644 | Brunet | Apr 2001 | B1 |
6209646 | Reddy et al. | Apr 2001 | B1 |
6210471 | Craig | Apr 2001 | B1 |
6214773 | Harris et al. | Apr 2001 | B1 |
6231644 | Chatterji et al. | May 2001 | B1 |
6234251 | Chatterji et al. | May 2001 | B1 |
6238597 | Yim et al. | May 2001 | B1 |
6241019 | Davidson et al. | Jun 2001 | B1 |
6242390 | Mitchell et al. | Jun 2001 | B1 |
6244344 | Chatterji et al. | Jun 2001 | B1 |
6257335 | Nguyen et al. | Jul 2001 | B1 |
6260622 | Blok et al. | Jul 2001 | B1 |
6271181 | Chatterji et al. | Aug 2001 | B1 |
6274650 | Cui | Aug 2001 | B1 |
6279652 | Chatterji et al. | Aug 2001 | B1 |
6279656 | Sinclair et al. | Aug 2001 | B1 |
6283214 | Guinot et al. | Sep 2001 | B1 |
6302207 | Nguyen et al. | Oct 2001 | B1 |
6306998 | Kimura et al. | Oct 2001 | B1 |
6311733 | Todd et al. | Nov 2001 | B1 |
6321841 | Eoff et al. | Nov 2001 | B1 |
6323307 | Bigg et al. | Nov 2001 | B1 |
6326458 | Gruber et al. | Dec 2001 | B1 |
6328105 | Betzold | Dec 2001 | B1 |
6328106 | Griffith et al. | Dec 2001 | B1 |
6330916 | Rickards et al. | Dec 2001 | B1 |
6330917 | Chatterji et al. | Dec 2001 | B2 |
6350309 | Chatterji et al. | Feb 2002 | B2 |
6357527 | Norman et al. | Mar 2002 | B1 |
6364018 | Brannon et al. | Apr 2002 | B1 |
6364945 | Chatterji et al. | Apr 2002 | B1 |
6367165 | Huttlin | Apr 2002 | B1 |
6367549 | Chatterji et al. | Apr 2002 | B1 |
6372678 | Youngsman et al. | Apr 2002 | B1 |
6376571 | Chawla et al. | Apr 2002 | B1 |
6387986 | Moradi-Araghi et al. | May 2002 | B1 |
6390195 | Nguyen et al. | May 2002 | B1 |
6401817 | Griffith et al. | Jun 2002 | B1 |
6405797 | Davidson et al. | Jun 2002 | B2 |
6406789 | McDaniel et al. | Jun 2002 | B1 |
6408943 | Schultz et al. | Jun 2002 | B1 |
6422314 | Todd et al. | Jul 2002 | B1 |
6439309 | Matherly et al. | Aug 2002 | B1 |
6439310 | Scott, III et al. | Aug 2002 | B1 |
6440255 | Kohlhammer et al. | Aug 2002 | B1 |
6446727 | Zemlak et al. | Sep 2002 | B1 |
6448206 | Griffith et al. | Sep 2002 | B1 |
6450260 | James et al. | Sep 2002 | B1 |
6454003 | Chang et al. | Sep 2002 | B1 |
6458885 | Stengel et al. | Oct 2002 | B1 |
6485947 | Rajgarhia et al. | Nov 2002 | B1 |
6488091 | Weaver et al. | Dec 2002 | B1 |
6488763 | Brothers et al. | Dec 2002 | B2 |
6494263 | Todd | Dec 2002 | B2 |
6503870 | Griffith et al. | Jan 2003 | B2 |
6508305 | Brannon et al. | Jan 2003 | B1 |
6527051 | Reddy et al. | Mar 2003 | B1 |
6528157 | Hussain et al. | Mar 2003 | B1 |
6531427 | Shuchart et al. | Mar 2003 | B1 |
6534449 | Gilmour et al. | Mar 2003 | B1 |
6538576 | Schultz et al. | Mar 2003 | B1 |
6543545 | Chatterji et al. | Apr 2003 | B1 |
6552333 | Storm et al. | Apr 2003 | B1 |
6554071 | Reddy et al. | Apr 2003 | B1 |
6555507 | Chatterji et al. | Apr 2003 | B2 |
6569814 | Brady et al. | May 2003 | B1 |
6582819 | McDaniel et al. | Jun 2003 | B2 |
6593402 | Chatterji et al. | Jul 2003 | B2 |
6599863 | Palmer et al. | Jul 2003 | B1 |
6608162 | Chiu et al. | Aug 2003 | B1 |
6616320 | Huber et al. | Sep 2003 | B2 |
6620857 | Valet | Sep 2003 | B2 |
6626241 | Nguyen | Sep 2003 | B2 |
6632527 | McDaniel et al. | Oct 2003 | B1 |
6632778 | Ayoub et al. | Oct 2003 | B1 |
6632892 | Rubinsztajn et al. | Oct 2003 | B2 |
6642309 | Komitsu et al. | Nov 2003 | B2 |
6648501 | Huber et al. | Nov 2003 | B2 |
6659179 | Nguyen | Dec 2003 | B2 |
6664343 | Narisawa et al. | Dec 2003 | B2 |
6667279 | Hessert et al. | Dec 2003 | B1 |
6668926 | Nguyen et al. | Dec 2003 | B2 |
6669771 | Tokiwa et al. | Dec 2003 | B2 |
6681856 | Chatterji et al. | Jan 2004 | B1 |
6686328 | Binder | Feb 2004 | B1 |
6705400 | Nguyen et al. | Mar 2004 | B1 |
6710019 | Sawdon et al. | Mar 2004 | B1 |
6713170 | Kaneko et al. | Mar 2004 | B1 |
6725926 | Nguyen et al. | Apr 2004 | B2 |
6725931 | Nguyen et al. | Apr 2004 | B2 |
6729404 | Nguyen et al. | May 2004 | B2 |
6732800 | Acock et al. | May 2004 | B2 |
6745159 | Todd et al. | Jun 2004 | B1 |
6749025 | Brannon et al. | Jun 2004 | B1 |
6763888 | Harris et al. | Jul 2004 | B1 |
6764981 | Eoff et al. | Jul 2004 | B1 |
6766858 | Nguyen et al. | Jul 2004 | B2 |
6776236 | Nguyen | Aug 2004 | B1 |
6832650 | Nguyen et al. | Dec 2004 | B2 |
6851474 | Nguyen | Feb 2005 | B2 |
6887834 | Nguyen et al. | May 2005 | B2 |
6978836 | Nguyen et al. | Dec 2005 | B2 |
7063151 | Nguyen et al. | Jun 2006 | B2 |
7261156 | Nguyen et al. | Aug 2007 | B2 |
20010016562 | Muir et al. | Aug 2001 | A1 |
20020043370 | Poe | Apr 2002 | A1 |
20020048676 | McDaniel et al. | Apr 2002 | A1 |
20020070020 | Nguyen | Jun 2002 | A1 |
20030006036 | Malone et al. | Jan 2003 | A1 |
20030060374 | Cooke, Jr. | Mar 2003 | A1 |
20030114314 | Ballard et al. | Jun 2003 | A1 |
20030130133 | Vollmer | Jul 2003 | A1 |
20030131999 | Nguyen et al. | Jul 2003 | A1 |
20030148893 | Lungofer et al. | Aug 2003 | A1 |
20030186820 | Thesing | Oct 2003 | A1 |
20030188766 | Banerjee et al. | Oct 2003 | A1 |
20030188872 | Nguyen et al. | Oct 2003 | A1 |
20030196805 | Boney et al. | Oct 2003 | A1 |
20030205376 | Ayoub et al. | Nov 2003 | A1 |
20030230408 | Acock et al. | Dec 2003 | A1 |
20030234103 | Lee et al. | Dec 2003 | A1 |
20040000402 | Nguyen et al. | Jan 2004 | A1 |
20040014607 | Sinclair et al. | Jan 2004 | A1 |
20040014608 | Nguyen et al. | Jan 2004 | A1 |
20040040706 | Hossaini et al. | Mar 2004 | A1 |
20040040708 | Stephenson et al. | Mar 2004 | A1 |
20040040713 | Nguyen et al. | Mar 2004 | A1 |
20040048752 | Nguyen et al. | Mar 2004 | A1 |
20040055747 | Lee | Mar 2004 | A1 |
20040106525 | Willbert et al. | Jun 2004 | A1 |
20040138068 | Rimmer et al. | Jul 2004 | A1 |
20040149441 | Nguyen et al. | Aug 2004 | A1 |
20040152601 | Still et al. | Aug 2004 | A1 |
20040177961 | Nguyen et al. | Sep 2004 | A1 |
20040194961 | Nguyen et al. | Oct 2004 | A1 |
20040206499 | Nguyen et al. | Oct 2004 | A1 |
20040211559 | Nguyen et al. | Oct 2004 | A1 |
20040211561 | Nguyen et al. | Oct 2004 | A1 |
20040221992 | Nguyen et al. | Nov 2004 | A1 |
20040231845 | Cooke, Jr. | Nov 2004 | A1 |
20040231847 | Nguyen et al. | Nov 2004 | A1 |
20040256097 | Byrd et al. | Dec 2004 | A1 |
20040256099 | Nguyen et al. | Dec 2004 | A1 |
20040261995 | Nguyen et al. | Dec 2004 | A1 |
20040261997 | Nguyen et al. | Dec 2004 | A1 |
20050000731 | Nguyen et al. | Jan 2005 | A1 |
20050006093 | Nguyen et al. | Jan 2005 | A1 |
20050006095 | Justus et al. | Jan 2005 | A1 |
20050006096 | Nguyen et al. | Jan 2005 | A1 |
20050034862 | Nguyen et al. | Feb 2005 | A1 |
20050045326 | Nguyen | Mar 2005 | A1 |
20050045330 | Nguyen et al. | Mar 2005 | A1 |
20050045384 | Nguyen | Mar 2005 | A1 |
20050051322 | Nguyen et al. | Mar 2005 | A1 |
20050051331 | Nguyen et al. | Mar 2005 | A1 |
20050059555 | Dusterhoft et al. | Mar 2005 | A1 |
20050061509 | Nguyen | Mar 2005 | A1 |
20050092489 | Welton et al. | May 2005 | A1 |
20050145385 | Nguyen | Jul 2005 | A1 |
20050173116 | Nguyen et al. | Aug 2005 | A1 |
20050194142 | Nguyen | Sep 2005 | A1 |
20050197258 | Nguyen | Sep 2005 | A1 |
20050263283 | Nguyen | Dec 2005 | A1 |
20050269086 | Nguyen et al. | Dec 2005 | A1 |
20050274510 | Nguyen et al. | Dec 2005 | A1 |
20050274517 | Blauch et al. | Dec 2005 | A1 |
20050277554 | Blauch et al. | Dec 2005 | A1 |
20050284637 | Stegent et al. | Dec 2005 | A1 |
Number | Date | Country |
---|---|---|
2063877 | May 2003 | CA |
0313243 | Oct 1988 | EP |
0510762 | Nov 1992 | EP |
0643196 | Jun 1994 | EP |
0834644 | Apr 1998 | EP |
0853186 | Jul 1998 | EP |
0864726 | Sep 1998 | EP |
0879935 | Nov 1998 | EP |
0933498 | Aug 1999 | EP |
1001133 | Aug 1999 | EP |
1132569 | Sep 2001 | EP |
1326003 | Jul 2003 | EP |
1362978 | Nov 2003 | EP |
1394355 | Mar 2004 | EP |
1396606 | Mar 2004 | EP |
1398460 | Mar 2004 | EP |
1403466 | Mar 2004 | EP |
1464789 | Oct 2004 | EP |
1107584 | Mar 1968 | GB |
1264180 | Dec 1969 | GB |
1292718 | Oct 1972 | GB |
2382143 | Apr 2001 | GB |
0528595 | Aug 1992 | WO |
WO 9407949 | Apr 1994 | WO |
WO 9408078 | Apr 1994 | WO |
WO 9408090 | Apr 1994 | WO |
WO 9509879 | Apr 1995 | WO |
WO 9711845 | Apr 1997 | WO |
WO 9927229 | Jun 1999 | WO |
WO 0181914 | Nov 2001 | WO |
WO 0187797 | Nov 2001 | WO |
WO 0212674 | Feb 2002 | WO |
WO 03027431 | Apr 2003 | WO |
WO 03027431 | Apr 2003 | WO |
WO 9315127 | Aug 2003 | WO |
WO 2004037946 | May 2004 | WO |
WO 2004038176 | May 2004 | WO |
WO 2005021928 | Mar 2005 | WO |
Number | Date | Country | |
---|---|---|---|
20060151168 A1 | Jul 2006 | US |
Number | Date | Country | |
---|---|---|---|
Parent | 10794076 | Mar 2004 | US |
Child | 11370119 | US |