Patents by Inventor George T. Colegrove
George T. Colegrove 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: 6451772Abstract: The present invention is directed towards biopolymer salts and biopolymer compositions comprising a biopolymer salt having an endotoxin content less than about 100 endotoxin units per gram. Because of their low endotoxin content, the biopolymer salts and biopolymer compositions of this invention may be administered parenterally to a patient. The present invention is also directed to methods of preparing the compositions of this invention.Type: GrantFiled: November 12, 1999Date of Patent: September 17, 2002Assignee: Monsanto CompanyInventors: William S. Bousman, George T. Colegrove, Robert Raczkowski, Monica A. Garcia, John L. Holahan, III
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Patent number: 6241812Abstract: Acid-stable and cationic-compatible reticulated bacterial cellulose compositions, containing co-agents and/or cationic surfactants, that are useful rheological modifying agents and stabilizing agents for suspensions, emulsions and foams, and their methods of preparation are disclosed.Type: GrantFiled: February 5, 1999Date of Patent: June 5, 2001Assignee: Pharmacia CorporationInventors: Barbara A. Smith, George T. Colegrove, Walter G. Rakitsky
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Patent number: 5230853Abstract: Polysaccharide fibers are produced by hot extrusion of a gelling polysaccharide into air or a gelling salt bath. Optionally, other polysaccharides, including non-gelling types, may be co-extruded with the gelling polysaccharide. The fibers are useful for the production of wound dressings and catamenial devices, and many other devices.Type: GrantFiled: January 3, 1992Date of Patent: July 27, 1993Assignee: Merck & Co., Inc.Inventors: George T. Colegrove, Thomas A. Lindroth
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Patent number: 4874423Abstract: Low viscosity heteropolysaccharides, e.g., xanthan gum, S-194, and guar gum, are disclosed. These gums are especially useful in preparing herbicidal compositions.Type: GrantFiled: September 8, 1986Date of Patent: October 17, 1989Assignee: Merck & Co., Inc.Inventors: George T. Colegrove, Thomas A. Lindroth
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Patent number: 4874854Abstract: Low viscosity heteropolysaccharides, e.g., zanthan gum, S-194, and guar gum, are disclosed. These gums are especially useful in preparing herbicidal compositions.Type: GrantFiled: October 8, 1985Date of Patent: October 17, 1989Assignee: Merck & Co., Inc.Inventors: George T. Colegrove, Thomas A. Lindroth
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Patent number: 4832730Abstract: Bipyridinium quaternary salt compositions are prepared which are dry, free-flowing, wettable powders. The solid compositions are complexes of the bipyridinium salts and algin.Type: GrantFiled: December 24, 1984Date of Patent: May 23, 1989Assignee: Merck & Co., Inc.Inventors: George T. Colegrove, Thomas A. Lindroth
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Patent number: 4792415Abstract: Derivatized anionic gums and compositions thereof are disclosed. The gum derivatives are prepared by reacting non-derivatized gum with quaternary ammonium compounds in an amount equal to or greater than the stoichiometric amount required for complete derivatization. The derived gums are soluble in organic solvents.Type: GrantFiled: April 13, 1987Date of Patent: December 20, 1988Assignee: Merck & Co., Inc.Inventor: George T. Colegrove
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Patent number: 4764222Abstract: Viscous solutions of NMP are described which comprise up to about 90% NMP. The viscosifying agent is rhamsan gum.Type: GrantFiled: April 13, 1987Date of Patent: August 16, 1988Assignee: Merck & Co. Inc.Inventor: George T. Colegrove
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Patent number: 4696677Abstract: Partially derivatized anionic gums are disclosed. The gum derivatives are prepared by reacting non-derivatized gum with quaternary ammonium compounds in less than the stoichiometric amount required for complete derivatization. The partially derived gums are water soluble and resistant to bacterial degradation.Type: GrantFiled: April 11, 1986Date of Patent: September 29, 1987Assignee: Merck & Co., Inc.Inventors: George T. Colegrove, Kenneth Clare
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Patent number: 4592760Abstract: An aqueous slurry containing ground coal and a biosynthetic polysaccharide is disclosed.Type: GrantFiled: January 22, 1985Date of Patent: June 3, 1986Assignee: Merck & Co., Inc.Inventors: George T. Colegrove, Thomas A. Lindroth
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Patent number: 4385123Abstract: Deacetylated Polysaccharide S-60, prepared by deacetylating the polysaccharide S-60 produced by fermentation of Pseudomonas elodea, ATCC 31461, has valuable properties in both the clarified and non-clarified form, and is useful as an agar substitute or a shapeable room deodorant.The non-clarified deacetylated gum contains about 17% protein and principally carbohydrate, which comprises glucuronic acid (.about.13% based on wt. gum) and the neutral sugars rhamnose and glucose in the approximate molar ratio 3:2.The clarified, deacetylated gum contains mostly carbohydrate and no more than about 2% protein.Type: GrantFiled: October 13, 1981Date of Patent: May 24, 1983Assignee: Merck & Co., Inc.Inventors: Kenneth S. Kang, George T. Veeder, George T. Colegrove
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Patent number: 4347289Abstract: Polysaccharide S-119 is used as a desensitizer in lithographic fountain solutions to maintain non-image areas on a lithographic printing plate in a hydrophilic condition in order to prevent scumming or ink pickup in said areas. S-119 is prepared in aqueous solution which is added to phosphoric acid etch in water plus alcohol to provide a gum concentration of 20-1000 ppm by weight in the fountain solution.Type: GrantFiled: August 3, 1981Date of Patent: August 31, 1982Assignee: Merck & Co., Inc.Inventor: George T. Colegrove
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Patent number: 4326052Abstract: Deacetylated Polysaccharide S-60, prepared by deacetylating the polysaccharide S-60 produced by fermentation of Pseudomonas elodea, ATCC 31461, has valuable properties in both the clarified and non-clarified form, and is useful as an agar substitute or a shapeable room deodorant.The non-clarified deacetylated gum contains about 17% protein and principally carbohydrate, which comprises glucuronic acid (.about.13% based on wt. gum) and the neutral sugars rhamnose and glucose in the approximate molar ratio 3:2.The clarified, deacetylated gum contains mostly carbohydrate and no more than about 2% protein.Type: GrantFiled: August 14, 1980Date of Patent: April 20, 1982Assignee: Merck & Co., Inc.Inventors: Kenneth S. Kang, George T. Colegrove, George T. Veeder
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Patent number: 4219362Abstract: Cold-water soluble tamarind gum is used to prepare portland cement compositions having improved anti-sag control.Type: GrantFiled: February 28, 1979Date of Patent: August 26, 1980Assignee: Merck & Co., Inc.Inventor: George T. Colegrove
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Patent number: 4157322Abstract: This invention relates to the recovery of oil from underground deposits. The invention relates to novel gel compositions consisting of water, a polysaccharide polymer, an acid generating salt and a melamine resin. The invention also relates to the method of utilizing said composition to recovery underground oil.Type: GrantFiled: January 19, 1978Date of Patent: June 5, 1979Assignee: Merck & Co., Inc.,Inventor: George T. Colegrove
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Patent number: 4144107Abstract: This invention relates to a gelled explosive and a method for its preparation. More specifically, the invention relates to a gelled explosive composition containing water, at least one member selected from the group of a polysaccharide colloid and synthetic polymer; water-soluble melamine resin and a water-soluble explosive salt.Type: GrantFiled: January 10, 1978Date of Patent: March 13, 1979Assignee: Merck & Co., Inc.Inventor: George T. Colegrove
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Patent number: 4010071Abstract: Fermentation broths and other aqueous suspensions containing a dissolved xanthan gum and suspended solids resulting from the fermentation producing the xanthan gum are clarified by treatment with a minor amount of a protease enzyme. The injectivity of aqueous solutions containing xanthan gum so clarified is improved, in oil well flooding operations, over solutions not so treated.Type: GrantFiled: December 17, 1975Date of Patent: March 1, 1977Assignee: Merck & Co., Inc.Inventor: George T. Colegrove
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Patent number: 3966618Abstract: Fermentation broths and other aqueous suspensions containing a dissolved xanthan gum and suspended solids resulting from the fermentation producing the xanthan gum are clarified by treatment with a minor amount of a protease enzyme. The injectivity of aqueous solutions containing xanthan gum so clarified is improved, in oil well flooding operations, over solutions not so treated.Type: GrantFiled: October 10, 1974Date of Patent: June 29, 1976Assignee: Merck & Co., Inc.Inventor: George T. Colegrove