Patents by Inventor Stephen H. W. Wu
Stephen H. W. Wu 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: 5260052Abstract: The present invention concerns a process for preparing a treated blend which contains pigment material dispersed in a continuous phase of water and a polyester material. The invention also concerns compositions prepared from such process. The polyester material of the treated blend is linear, contains a sulfomonomer, and has an average particle size of less than 1 .mu.m.Type: GrantFiled: July 20, 1992Date of Patent: November 9, 1993Assignee: Eastman Kodak CompanyInventors: Kimberly T. Peters, Stephen H. W. Wu
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Patent number: 5179122Abstract: A composition for increased bioavailability of Vitamin E. The composition contains a Vitamin E material, a surface active agent, an inert carrier, and, optionally, a flow agent.Type: GrantFiled: February 11, 1991Date of Patent: January 12, 1993Assignee: Eastman Kodak CompanyInventors: Carol J. Greene, Stephen H. W. Wu, Andreas M. Papas
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Patent number: 5169881Abstract: The present invention concerns a process for preparing a treated blend which contains pigment material dispersed in a continuous phase of water and a polyester material. The invention also concerns compositions prepared from such process. The polyester material of the treated blend is linear, contains a sulfomonomer, and has an average particle size of less than 1 .mu.m.Type: GrantFiled: May 6, 1991Date of Patent: December 8, 1992Assignee: Eastman Kodak CompanyInventors: Kimberly T. Peters, Stephen H. W. Wu
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Patent number: 5149775Abstract: Taste-masking composition for oral delivery of medicaments to non-ruminants, especially humans. The taste-masking composition contains a polymeric composition containing a flake material, a hydrophobic material, and a polymer containing repeating units from vinylpyridine derivatives. Also disclosed is a process for purifying polymers.Type: GrantFiled: January 25, 1991Date of Patent: September 22, 1992Assignee: Eastman Kodak CompanyInventor: Stephen H. W. Wu
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Patent number: 5055500Abstract: The present invention concerns a process for preparing a treated blend which contains pigment material dispersed in a continuous phase of water and a polyester material. The invention also concerns compositions prepared from such process. The polyester material of the treated blend is linear, contains a sulfomonomer, and has an average particle size of less than 1 .mu.m.Type: GrantFiled: October 24, 1989Date of Patent: October 8, 1991Assignee: Eastman Kodak CompanyInventors: Kimberly T. Peters, Stephen H. W. Wu
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Patent number: 5025004Abstract: Disclosed is a process for preparing polymeric compositions which are suitable for coating medicaments or for use in cosmetic formulations and the novel compositions prepared therefrom. The process makes stable, colloidal, latex-like dispersions of coating polymers which can be readily dried to form polymeric powder materials. The process makes use of a novel combination of a water-in-oil emulsifier and an oil-in-water emulsifier.Type: GrantFiled: June 4, 1990Date of Patent: June 18, 1991Assignee: Eastman Kodak CompanyInventors: Stephen H. W. Wu, Carol J. Greene, Mahendra K. Sharma
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Patent number: 4960814Abstract: Disclosed is a process for preparing polymeric compositions which are suitable for coating medicaments or for use in cosmetic formulations and the novel compositions prepared therefrom. The process makes stable, colloidal, latex-like dispersions of coating polymers which can be readily dried to form polymeric powder materials. The process makes use of a novel combination of a water-in-oil emulsifier and an oil-in-water emulsifier.Type: GrantFiled: June 13, 1988Date of Patent: October 2, 1990Assignee: Eastman Kodak CompanyInventors: Stephen H. W. Wu, Carol J. Greene, Mahendra K. Sharma
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Patent number: 4837004Abstract: Coating compositions and pellets coated therewith which are adaptable for oral administration to ruminants are disclosed. The coating protects the core material of the pellets in the rumen and releases it postruminally. The coating is a specific mixture of a film-forming polymeric material, hydrophobic material and flake material.Type: GrantFiled: January 29, 1988Date of Patent: June 6, 1989Assignee: Eastman Kodak CompanyInventors: Stephen H. W. Wu, Shane K. Kirk, Kenneth P. Perry, E. Phillip Smith, Yeong-Ho Chang, Waylon L. Jenkins
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Patent number: 4780315Abstract: Disclosed are rumen-stable compositions for coating medicaments and nutrients for ruminant animals. The coatings comprise a film-forming polymeric substance containing basic nitrogen groups, and an inorganic particulate material dispersed throughout the polymeric substance.Type: GrantFiled: November 25, 1985Date of Patent: October 25, 1988Assignee: Eastman Kodak CompanyInventors: Stephen H. W. Wu, Edward G. Miller, Jr.
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Patent number: 4595584Abstract: Disclosed is a composition adapted for use in coating pellets orally administrable to ruminants which protects the core material in the rumen and releases it in the abomasum comprising a film-forming polymeric material, a hydrophobic material dispersed in said polymeric material, and a physiologically acceptable flake material dispersed in said polymeric material, the flake material having been treated by bringing the particles into rubbing contact with the hydrophobic material so that the surface of the particles of flake material become hydrophobic.Type: GrantFiled: January 7, 1985Date of Patent: June 17, 1986Assignee: Eastman Kodak CompanyInventors: Stephen H. W. Wu, M. Akram Sandhu
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Patent number: 4473620Abstract: Disclosed are free flowing, solid, antioxidant particles comprising butylated hydroxyanisole encapsulated within an edible polymeric coating. The coating is adapted to release the butylated hydroxyanisole when the particles are in contact with vegetable oil or molten fat. The process for preparing these antioxidant particles includes establishing a molten butylated hydroxyanisole as droplets in a liquid dispersion containing a dissolved film forming edible polymer. The liquid dispersion is cooled below the melting temperature of the butylated hydroxyanisole droplets thereby causing the dissolved polymer to form an encapsulated film around the solidified droplets and surface drying the solidified droplets.Type: GrantFiled: December 23, 1982Date of Patent: September 25, 1984Assignee: Eastman Kodak CompanyInventors: Stephen H. W. Wu, M. Akram Sandhu, Charles H. Benton
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Patent number: T100404Abstract: Pellets are disclosed which are adapted for oral administration to a ruminant, the pellets having a core material beneficial to ruminants postruminally, and a coating surrounding the core material which protects the core material in the rumen and releases it in the abomasum, said coating having an outer layer consisting essentially of a blend of about 55-75 parts by weight of a film-forming polymeric material containing at least one basic amino grouping and in which the nitrogen content is from 3 to 14% by weight of the total molecular weight of the polymeric material, e.g., cellulose propionate morpholinobutyrate, and about 45-25 parts by weight of a hydrophobic material such as aluminum oleate, and an inner layer consisting essentially of a blend of about 45-55 parts by weight of a film-forming polymeric material containing at least one basic amino grouping and in which the nitrogen content is from 3 to 14% by weight of the total molecular weight of the polymeric material, e.g.Type: GrantFiled: February 29, 1980Date of Patent: March 3, 1981Inventor: Stephen H. W. Wu