Patents by Inventor Chris A. Sumpter
Chris A. Sumpter 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: 5610213Abstract: Cold processable heat curable alkenyl silicone rubbers that comprising an alkenyl silicone gum or mixture of alkenyl silicone gums selected from the group of alkenyl silicone gums having the formula:(M.sub.a M.sup.vi.sub.1-a)(D.sup.vi).sub.x (D).sub.y (M.sub.a M.sup.vi.sub.1-a);a process for making such heat curable rubbers, and articles of manufacture made therefrom.Type: GrantFiled: June 30, 1995Date of Patent: March 11, 1997Assignee: General Electric CompanyInventors: Chris A. Sumpter, Brian J. Ward
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Patent number: 5438081Abstract: Silicone foams are prepared by microwave curing of a mixture of at least one polyorganosiloxane having vinyl groups attached to silicon; at least one hydride polysiloxane; a blowing agent comprising water and, preferably, at least one monohydroxyaliphatic compound, a cyclodextrin inclusion compound of a platinum group metal coordination complex (preferably with a cyclic diene) and a filler. The use of the inclusion compound as a catalyst increases the shelf life of the composition, whereupon curing and foaming occur together upon exposure to microwave radiation.Type: GrantFiled: October 20, 1994Date of Patent: August 1, 1995Assignee: General Electric CompanyInventors: Larry N. Lewis, William N. Schultz, Lionel M. Levinson, Chris A. Sumpter, Judith Stein
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Patent number: 5436274Abstract: Silicone foams having low density and small cell size are prepared by blending a mixture of at least one polyorganosiloxane having vinyl groups attached to silicon, at least one hydride polysiloxane, a mixture of at least one monohydroxyaliphatic compound and at least one dihydroxyaliphatic compound each of which contains at least 5 carbon atoms in an equivalent ratio in the range of about 1.5-4.0:1, water, a platinum group catalyst and a filler. Said mixture comprises at least about 5% of the combination of silica and silicon-containing compounds having a high proportion of Q units.Type: GrantFiled: September 30, 1994Date of Patent: July 25, 1995Assignee: General Electric CompanyInventors: Chris A. Sumpter, Larry N. Lewis
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Patent number: 5432140Abstract: Heat curable organopolysiloxane compositions are provided utilizing a vinyl silicone organopolysiloxane fluid, a silicon hydride siloxane and an effective amount of a preformed latent platinum catalyst resulting from the reaction in the substantial absence of organopolysiloxane fluid, between a zero valent platinum catalyst and an organic nitrogen compound, such as 2,2'-bipyridine or diethyl azodicarboxylate.Type: GrantFiled: November 19, 1993Date of Patent: July 11, 1995Assignee: General Electric CompanyInventors: Chris A. Sumpter, Larry N. Lewis, William B. Lawrence
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Patent number: 5403828Abstract: A method is provided for purifying crude inclusion complexes of cyclodextrin which is used as a host material, in combination with a guest material, such as light mineral oil. After the crude cyclodextrin complex is formed in an aqueous media, the moisture content of the crude cyclodextrin complex is substantially reduced before it is washed with a wash solvent to substantially eliminate uncomplexed guest molecules.Type: GrantFiled: February 15, 1994Date of Patent: April 4, 1995Assignee: American Maize-Products CompanyInventors: Larry N. Lewis, Chris A. Sumpter, Erick V. Sprenne, Allan R. Hedges, Matthew L. Romberger
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Patent number: 5384357Abstract: There is provided an infrared radiation curable organopolysiloxane composition having a poly(alkenylorganosiloxane), a siloxane hydride, an infrared radiation absorbent material, such as carbon black, and an effective amount of a platinum group metal catalyst. The infrared radiation curable organopolysiloxane composition can be used as a binder for a desiccant, such as a zeolite, useful in making multi-panel thermal pane windows.Type: GrantFiled: November 2, 1992Date of Patent: January 24, 1995Assignee: General Electric CompanyInventors: Lionel M. Levinson, William N. Schultz, Larry N. Lewis, Chris A. Sumpter, Michael A. Zumbrum
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Patent number: 5332538Abstract: A method is provided for making a rigid spacer, containing a silicone bound desiccant which is useful for a multi-pane sealed window. An infrared radiation curable silicone is used as a binder for a desiccant such as a zeolite which is injected in a continuous manner into a U-shaped or V-shaped semi-rigid spacer such as a steel channel.Type: GrantFiled: November 2, 1992Date of Patent: July 26, 1994Assignee: General Electric CompanyInventors: Lionel M. Levinson, William N. Schultz, Larry N. Lewis, Chris A. Sumpter, Judith Stein, Michael A. Zumbrum
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Patent number: 5331075Abstract: Heat curable organopolysiloxane compositions are provided utilizing a vinyl silicone organopolysiloxane fluid, a silicon hydride siloxane and an effective amount of a preformed latent platinum catalyst resulting from the reaction in the substantial absence of organopolysiloxane fluid, between a zero valent platinum catalyst and an organic nitrogen compound, such as 2,2'-bipyridine or diethyl azodicarboxylate.Type: GrantFiled: October 13, 1992Date of Patent: July 19, 1994Assignee: General Electric CompanyInventors: Chris A. Sumpter, Larry N. Lewis, William B. Lawrence
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Patent number: 5231158Abstract: Alkynyl substituted organopolysiloxanes having alkynyl radicals attached to silicon by carbon-silicon bonds can be used in combination with a hydride siloxane crosslinker and a Group 8-10 catalyst to make one part heat curable organopolysiloxane compositions.Type: GrantFiled: May 28, 1992Date of Patent: July 27, 1993Assignee: General Electric CompanyInventors: Larry N. Lewis, Chris A. Sumpter
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Patent number: 5223344Abstract: The present invention discloses the use of certain silicon hydrides having at least two hydrogen atoms attached to silicon in particular heat curable platinum catalyzed silicone coating formulations, which permits the use of a reduced level of inhibitor and improved cure performance.Type: GrantFiled: December 20, 1991Date of Patent: June 29, 1993Assignee: General Electric CompanyInventors: Chris A. Sumpter, Larry N. Lewis, Judith Stein, James V. Crivello, Mingxin Fan
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Patent number: 5215635Abstract: A method is provided for using ultrasonic energy to effect the rapid cure of one-part and two-part curable silicone compositions comprising a vinyl silicone, a silicon hydride siloxane and an effective amount of a platinum group metal catalyst.Type: GrantFiled: December 13, 1991Date of Patent: June 1, 1993Assignee: General Electric CompanyInventors: Judith Stein, Larry N. Lewis, Chris A. Sumpter
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Patent number: 5206329Abstract: Heat curable organopolysiloxane compositions are provided which utilize a vinyl containing polydiorganosiloxane, silicon hydride siloxane, a platinum group metal catalyst, and a triazoline dione as an inhibitor for the platinum group metal catalyst. The heat curable organopolysiloxane compositions of the present invention exhibit improved shelf stability, cure time and resistance to change in final properties when subjected to heat aging.Type: GrantFiled: November 29, 1991Date of Patent: April 27, 1993Assignee: General Electric CompanyInventors: Chris A. Sumpter, Larry N. Lewis, Samuel J. Danishefsky
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Patent number: 5132385Abstract: Shelf stable heat curable mixtures of vinyl substituted organopolysiloxane fluid and siloxane hydride are provided. The one part polyorganosiloxane mixtures are catalyzed with an inclusion compound of a cyclodextrin and a complexing ligand such as, cyclopentadiene, 1,5-cyclooctadiene or norbornadiene and a platinum metal material, such as a C.sub.(1-4) alkyl substituted platinum.Type: GrantFiled: October 1, 1991Date of Patent: July 21, 1992Assignee: General Electric CompanyInventors: Chris A. Sumpter, Larry N. Lewis, Kevin X. Lettko, Mark W. Davis
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Patent number: 5132442Abstract: Shelf stable heat curable mixtures of vinyl substituted organopolysiloxane fluid and siloxane hydride are provided. The one part polyorganosiloxane mixtures are catalyzed with an inclusion compound of a cyclodextrin and a complex of a cyclopentadiene, 1,5-cyclooctadiene or norbornadiene and a platinum group metal material, such as a C.sub.(1-4) alkyl substituted platinum or a rhodium halide.Type: GrantFiled: December 9, 1991Date of Patent: July 21, 1992Assignee: General Electric CompanyInventors: Chris A. Sumpter, Larry N. Lewis, Kevin X. Lettko, Mark W. Davis
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Patent number: 5122585Abstract: One part heat curable organopolysiloxane compositions are provided which utilize a vinyl containing organopolysiloxane composition, a siloxane hydride, an effective amount of a platinum group metal catalyst and a sufficient amount of an azodicarbonyl compound as an inhibitor which is free of ester linkages.Type: GrantFiled: December 10, 1990Date of Patent: June 16, 1992Assignee: General Electric CompanyInventors: Chris A. Sumpter, Larry N. Lewis
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Patent number: 5106939Abstract: Shelf stable heat curable mixtures of vinyl substituted organopolysiloxane fluid and siloxane hydride are provided. The one part polyorganosiloxane mixtures are catalyzed with an inclusion compound of a cyclodextrin and a complex of a cyclopentadiene, 1,5-cyclooctadiene or norbornadiene and a platinum group metal material, such as a C.sub.(1-4) alkyl substituted platinum or a rhodium halide.Type: GrantFiled: December 14, 1990Date of Patent: April 21, 1992Assignee: General Electric CompanyInventors: Chris A. Sumpter, Larry N. Lewis, Kevin X. Lettko, Mark W. Davis
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Patent number: 5025073Abstract: Shelf stable heat curable mixtures of vinyl-substituted organopolysiloxane fluids and siloxanehydride are provided. These one part organopolysiloxane mixtures are catalyzed with an inclusion compound of a platinum metal complex, such as a complex of a platinum halide and 1,5-cyclooctadiene and a cyclodextrin.Type: GrantFiled: October 19, 1989Date of Patent: June 18, 1991Assignee: General Electric CompanyInventors: Larry N. Lewis, Chris A. Sumpter