Patents by Inventor Patrick C. Hu
Patrick C. Hu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10391072Abstract: Granules of racemic sodium ibuprofen dihydrate formed from components specified herein have very desirable properties and can be effectively used in conventional rotary press tableting equipment without operational difficulties often en-countered in actual practice. Their preparation by a wet granulation process, the wet granule compositions, formulations adapted for preparation of solid dosage forms utilizing a rotary press, solid dosage forms, and methods of preparing solid dosage forms in a rotary press are also described.Type: GrantFiled: March 15, 2017Date of Patent: August 27, 2019Assignee: SI GROUP, INC.Inventor: Patrick C. Hu
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Publication number: 20170181992Abstract: Granules of racemic sodium ibuprofen dihydrate formed from components specified herein have very desirable properties and can be effectively used in conventional rotary press tableting equipment without operational difficulties often en-countered in actual practice. Their preparation by a wet granulation process, the wet granule compositions, formulations adapted for preparation of solid dosage forms utilizing a rotary press, solid dosage forms, and methods of preparing solid dosage forms in a rotary press are also described.Type: ApplicationFiled: March 15, 2017Publication date: June 29, 2017Inventor: Patrick C. HU
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Patent number: 9629809Abstract: Disclosed is a method for the preparation of easily-swallowed, reliably-dosed, aesthetically-improved tablets of sodium ibuprofen dihydrate, the method comprising the formation of the tablets with punches or presses comprising contact surfaces which are chrome or chrome-plated.Type: GrantFiled: December 14, 2012Date of Patent: April 25, 2017Assignee: SI GROUP, INC.Inventors: Latria N. Boudoin, Gregory H. Lambeth, Eric W. Llimatta, Patrick C. Hu
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Patent number: 9629806Abstract: Granules of racemic sodium ibuprofen dihydrate formed from components specified herein have very desirable properties and can be effectively used in conventional rotary press tableting equipment without operational difficulties often encountered in actual practice. Their preparation by a wet granulation process, the wet granule compositions, formulations adapted for preparation of solid dosage forms utilizing a rotary press, solid dosage forms, and methods of preparing solid dosage forms in a rotary press are also described.Type: GrantFiled: July 13, 2009Date of Patent: April 25, 2017Assignee: SI GROUP, INC.Inventor: Patrick C. Hu
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Patent number: 8940329Abstract: Described are granules composed at least of a substantial amount of ibuprofen, at least one pharmaceutically-acceptable super disintegrant, and at least one pharmaceutically-acceptable binder different from the super disintegrant(s), the super disintegrant(s) being substantially uniformly dispersed throughout the granules. The methods for preparing such granules are described. The granules are useful in forming solid dosage forms such as filled capsules or compressed solid dosage forms.Type: GrantFiled: October 28, 2005Date of Patent: January 27, 2015Assignee: SI Group, Inc.Inventors: Patrick C. Hu, Gregory H. Lambeth, Arcelio J. Malcolm
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Publication number: 20110182984Abstract: Granules of racemic sodium ibuprofen dihydrate formed from components specified herein have very desirable properties and can be effectively used in conventional rotary press tableting equipment without operational difficulties often encountered in actual practice. Their preparation by a wet granulation process, the wet granule compositions, formulations adapted for preparation of solid dosage forms utilizing a rotary press, solid dosage forms, and methods of preparing solid dosage forms in a rotary press are also described.Type: ApplicationFiled: July 13, 2009Publication date: July 28, 2011Applicant: ALBEMARLE CORPORATIONInventor: Patrick C. Hu
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Publication number: 20020039989Abstract: Novel synthetic zeolite compositions of extremely small particle sizes that have increased loading capability, and process technology for producing such compositions are described. So far as is presently known, it has never been possible to form such compositions heretofore. The process technology involves, inter alia, contacting the zeolite cake formed in its production with a specified type of treating agent and then subjecting the treated zeolite to physical subdivision.Type: ApplicationFiled: March 13, 2001Publication date: April 4, 2002Inventors: Patrick C. Hu, Conrad J. Langlois, Dixie E. Goins, Joseph E. Coury
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Patent number: 6357678Abstract: Particulate synthetic zeolite is micronized in a liquid organic medium to form a micronized zeolite product having an average (mean) particle size of about 2 microns or less and containing at least 90% by weight, based on the dry weight of the zeolite product, if isolated, of particles no larger than about 5 microns. Preferably, the micronized zeolite product has a mean particle size of 1 micron or less, and at least 90% by weight of the zeolite product, based on the dry weight of the zeolite product, if isolated, has a particle size of 2 microns or less. The liquid organic medium used is (a) inert or substantially inert, (b) devoid or substantially devoid of water, and (c) devoid of a dispersant.Type: GrantFiled: October 29, 1999Date of Patent: March 19, 2002Assignee: Albermarle CorporationInventors: Patrick C. Hu, Conrad J. Langlois, Jr., Ronald L. Camp
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Patent number: 6352966Abstract: The cleansing bar is comprised of at least one fully neutralized alkali metal salt of an alkyl or alkenyl succinic acid in which the alkyl or alkenyl group is a straight chain alkyl or alkenyl group containing about 8-14 carbon atoms.Type: GrantFiled: May 19, 2000Date of Patent: March 5, 2002Assignee: Albemarle CorporationInventors: Valerie N. Legloahec, Patrick C. Hu, Deborah A. Quebedeaux, Conrad J. Langlois, Jr.
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Patent number: 6281176Abstract: This invention provides a process for producing a betaine/amine oxide mixture. This process comprises reacting, in a liquid medium, an alkali metal &ohgr;-halocarboxylate with a first tertiary amine of the formula Ra2RbN, wherein each Ra group is a hydrocarbyl group which independently has from 1 to about 4 carbon atoms, and wherein the Rb group is a hydrocarbyl group which has from about 8 to about 24 carbon atoms, to produce a betaine product solution. To the betaine product solution is added a second tertiary amine of the formula Ra2RbN, wherein each Ra group is a hydrocarbyl group which independently has from 1 to about 4 carbon atoms, and wherein the Rb group is a hydrocarbyl group which has from about 8 to about 24 carbon atoms, to produce an amine/betaine mixture. The first and second tertiary amines can be separate portions of the same amine. Preferably, however, the first and second tertiary amines differ from each other.Type: GrantFiled: December 3, 1999Date of Patent: August 28, 2001Assignee: Albemarle CorporationInventors: Rebecca S. Cochran, Patrick C. Hu, Michael S. McCaig, Edmund F. Perkins, Jr., Joe D. Sauer, Dustin H. Thomas
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Patent number: 6231659Abstract: The sizing agents are mixtures of alkenyl succinic anhydrides in which the alkenyl groups have in the range of about 6 to about 40 carbon atoms, and in which at least 97 wt % of the alkenyl groups are bifurcated on the alpha carbon atom into two branches neither of which has less than two carbon atoms. Other characteristics of the mixture are that (1) 20-50% of the bifurcated alkenyl groups have only one methyl or methylene substituent and no other side chain, and the remainder of such bifurcated groups have two straight chain branches (no side chain) emanating from the alpha carbon atom, (2) at least 3 alkenyl succinic anhydrides that differ in the number of alkenyl carbon atoms are each present in at least 5 wt % in the mixture, (3) no more than about 50 wt % of the alkenyl succinic anhydrides is any given alkenyl succinic anhydride or mixture of isomers having the same number of carbon atoms in their alkenyl groups, (4) the average number of carbon atoms in the alkenyl groups is ca.Type: GrantFiled: June 24, 1999Date of Patent: May 15, 2001Assignee: Albemarle CorporationInventors: Patrick C. Hu, Valerie N. LeGloahec, Michelle R. Free, Dixie E. Goins
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Patent number: 6225437Abstract: Provided are alkenyl and/or alkyl succinimides formed from at least one alkenyl or alkyl succinic anhydride and at least one aliphatic amine having one or two primary amino groups in the molecule. These succinimides are characterized in that each alkenyl or alkyl group thereof contains in the range of 16 to 30 carbon atoms. Such group is bifurcated on its alpha carbon atom into two branches neither of which contains less than 2 carbon atoms, one such branch being free of any side chain, and the other such branch either being free of any side chain or containing at most one methyl or methylene side chain. In addition the succinimide has a viscosity at 80° C. of less than about 100 centistokes. These succinimides are especially useful as internal and external sizing agents for paper and paper products.Type: GrantFiled: June 24, 1999Date of Patent: May 1, 2001Assignee: Albemarle CorporationInventors: Patrick C. Hu, Valerie N. LeGloahec
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Patent number: 6225475Abstract: To form a mixture of anhydrides suitable for use as a curing agent for epoxy resins, a mixture formed from maleic anhydride and a liquid monoolefin is heated to produce a reaction mass containing a liquid phase comprised of alkenyl succinic anhydride, maleic anhydride, and monoolefin. Then a conjugated diene hydrocarbon is mixed with this reaction mass and the temperature of the resultant mixture is such as to form a reaction mass comprising tetrahydrophthalic anhydride and/or alkyl-substituted tetrahydrophthalic anhydride and alkenyl succinic anhydride.Type: GrantFiled: August 18, 2000Date of Patent: May 1, 2001Assignee: Albemarle CorporationInventors: Valerie N. Legloahec, Patrick C. Hu
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Patent number: 6221835Abstract: Novel synthetic zeolite compositions of extremely small particle sizes that have increased loading capability, and process technology for producing such compositions are described. So far as is presently known, it has never been possible to form such compositions heretofore. The process technology involves, inter alia, contacting the zeolite cake formed in its production with a specified type of treating agent and then subjecting the treated zeolite to physical subdivision.Type: GrantFiled: June 25, 1999Date of Patent: April 24, 2001Assignee: Albemarle CorporationInventors: Patrick C. Hu, Conrad J. Langlois, Jr., Dixie E. Goins, Joseph E. Coury
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Patent number: 6035869Abstract: Dishes are cleaned by washing them with a cleaning implement which has been charged with the detergent in a solid block made from a formulation having a water-soluble alkali metal salt content of 15-60% by weight and a surfactant content of 10-70% by weight, said surfactant comprising 15-100% by weight of at least one amine oxide corresponding to the formula RR'R"NO .multidot.nH.sub.2 O in which R and R' are independently selected from methyl, ethyl, and 2-hydroxyethyl, R" is a primary alkyl group containing 12-16 carbons, and n represents 0, 1, or 2.Type: GrantFiled: October 29, 1998Date of Patent: March 14, 2000Assignee: Albemarle CorporationInventors: Deborah A. Quebedeaux, Joe D. Sauer, Conrad J. Langlois, Jr., Patrick C. Hu
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Patent number: 6010996Abstract: A quaternary ammonium compound is combined with a water-soluble anionic surfactant having a hydrophile/lipophile balance (HLB) of 14 or above to form a biocidal/surfactant composition in which the amount of (ii) is up to 50 wt % of the total weight of these components. In the presence of water or other suitable aqueous media, such compositions appear to form a soluble charge complex. But whatever actually happens in the aqueous medium, the surfactant properties of the quaternary ammonium compound are improved without jeopardizing or impairing its germicidal properties.Type: GrantFiled: October 1, 1998Date of Patent: January 4, 2000Assignee: Albemarle CorporationInventors: Patrick C. Hu, Joe D. Sauer, Deborah A. Quebedeaux, Conrad J. Langlois, Jr.
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Patent number: 5922669Abstract: Improved results are obtained in the no-rub cleaning of hard surfaces when the cleaner used in the process is an aqueous solution of (A) about 40-50% by weight of a nonionic surfactant mixture of an alcohol ethoxylate and a C.sub.8-16 alkyldimethylamine oxide in a weight ratio of about 5-15/1 and (B) correspondingly, about 60-50% by weight of one or more nitrogenous builders.Type: GrantFiled: September 10, 1997Date of Patent: July 13, 1999Assignee: Albemarle CorporationInventors: Deborah A. Quebedeaux, Conrad J. Langlois, Jr., Joe D. Sauer, Patrick C. Hu
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Patent number: 5562866Abstract: Certain double-tailed alcohol ether sulfates of specified chemical structures are formulated with a hydrotrope or a co-surfactant. The formulations are useful for various surfactant utilities including use in hard water systems.Type: GrantFiled: June 20, 1995Date of Patent: October 8, 1996Assignee: Albemarle CorporationInventors: Patrick C. Hu, Raynold J. Corona
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Patent number: 5487882Abstract: A method for producing crystalline synthetic faujasite of the zeolite "X" type is disclosed. The method comprises (a) separately preparing a sodium silicate solution and a sodium aluminate solution, (b) admixing the sodium silicate solution and the sodium aluminate solution at high shear until a mixture results having a ratio of sodium oxide to silica of 0.4:1 to 2:1, silica to alumina of 2.2:1 to 3.5:1, and water to sodium oxide of 20:1 to 70:1, (c) heating said mixture to a temperature of about 80.degree. to 120.degree. C. in the absence of any further mixing for a period of time sufficient to produce the desired crystalline faujasite of the zeolite "X" type, and (d) recovering said zeolite "X".Type: GrantFiled: July 19, 1994Date of Patent: January 30, 1996Assignee: Albemarle CorporationInventors: Patrick C. Hu, Eric W. Liimatta
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Patent number: 5385753Abstract: Coated particles having properties such as to make them suitable as replacements for titanium dioxide particles can be obtained by reacting a titanium or zirconium halide, ether, or ester with zeolite hydrate particles so as to coat the zeolite particles with titania or zirconia. The reaction is preferably conducted between a titanium compound, such as titanium tetrachloride, and the zeolite in an inert medium, such as anhydrous or substantially anhydrous air or a hydrocarbon.Type: GrantFiled: August 30, 1993Date of Patent: January 31, 1995Assignee: Albemarle CorporationInventors: Patrick C. Hu, Richard I. Leavitt