Patents by Inventor Richard L. Danforth
Richard L. Danforth 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: 6051323Abstract: Multilayer polyketone compositions are presented. These compositions have at least one layer of polyketone, at least one layer of a polyamide having a lengthy aliphatic chain segment and a tielayer of a polyamide having a short aliphatic chain segment, a polyamide-AABB portion, a polyamide having a lengthy aliphatic chain segment, and preferably residual polyamide monomer. Processes for making these composites are also presented. In another embodiment of the invention, the tielayer is a polyamide monomer.Type: GrantFiled: June 29, 1998Date of Patent: April 18, 2000Assignee: Shell Oil CompanyInventors: Carlton Edwin Ash, Dixie G. Waters, Richard L. Danforth
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Patent number: 5256335Abstract: Conductive polymer compositions comprising a linear alternating polyketone polymer and a conductive carbon fiber exhibit conductive properties at low additive loadings.Type: GrantFiled: November 9, 1992Date of Patent: October 26, 1993Assignee: Shell Oil CompanyInventors: Paul S. Byrd, Richard L. Danforth
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Patent number: 4937021Abstract: Laminated billets are made by extruding a plurality of sheets, cooling and stacking said sheets to form a stack, laminating a portion of said stack using radio frequency radiation, cutting out at least the laminated portion from the stack and returning the resulting individual webs to their respective sheet extrusion process.Type: GrantFiled: September 19, 1988Date of Patent: June 26, 1990Assignee: Shell Oil CompanyInventors: Richard L. Danforth, William H. Korcz
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Patent number: 4935304Abstract: A wire and cable coating prepared from either a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon or a blend of that polymer with a polyurethane polymer, and a method for making the coating.Type: GrantFiled: March 31, 1989Date of Patent: June 19, 1990Assignee: Shell Oil CompanyInventor: Richard L. Danforth
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Patent number: 4921897Abstract: Flame retardant compositions comprise linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon and a minor quantity, relative to the polymer, of a zinc borate or barium borate.Type: GrantFiled: March 31, 1989Date of Patent: May 1, 1990Assignee: Shell Oil CompanyInventors: Richard L. Danforth, Darlene G. Smith
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Patent number: 4885318Abstract: Flame retardant compositions comprise linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon and a minor quantity, relative to the polymer, of certain flame retardants containing an organo halide.Type: GrantFiled: March 31, 1989Date of Patent: December 5, 1989Assignee: Shell Oil CompanyInventors: Richard L. Danforth, Darlene G. Smith
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Patent number: 4885328Abstract: Flame retardant compositions comprise linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon and a minor quantity, relative to the polymer of an alkaline earth metal hydroxide.Type: GrantFiled: March 31, 1989Date of Patent: December 5, 1989Assignee: Shell Oil CompanyInventors: Richard L. Danforth, Darlene G. Smith
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Patent number: 4874801Abstract: Polymer blends of improved properties are produced from (1) linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon, (2) copolymers of ethylene and .alpha.,.beta.-ethylenically unsaturated carboxylic acid and (3) glass fibers.Type: GrantFiled: December 21, 1987Date of Patent: October 17, 1989Assignee: Shell Oil CompanyInventors: Eric R. George, Richard L. Danforth, Paul S. Byrd
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Patent number: 4869966Abstract: An encapsulated assemblage and a process for making an encapsulated assemblage comprising:(a) silanizing a substrate thereby forming a silanized substrate;(b) coating said silanized substrate with at least one thin extruded coherent film forming a coated substrate, said film consisting essentially of:(1) about 75 to about 90 parts by weight of a blend of:(a) about 65 to about 75 parts by weight of a selectively hydrogenated two-block polymer wherein one polymer block is designated by A and a second polmer block is designated by B such that prior to hydrogenation,(1) each A is a polymer block of a monovinyl or alpha alkyl monovinyl arene having a number average molecular weight in the range of from about 5,000 to about 75,000, said A blocks comprising from about 10 to about 40% by weight of the total block copolymer, and(2) each B is a polymer block having a number average molecular weight in the range of from about 10,000 to 150,000 and is formed by polymerizing a conjugated diene having from 4 to 10 carbon aType: GrantFiled: May 27, 1988Date of Patent: September 26, 1989Assignee: Shell Oil CompanyInventors: Gay M. Samuelson, David J. St. Clair, Richard L. Danforth
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Patent number: 4851482Abstract: A process for preparing a blend of a linear alternating polymer of carbon monoxide and an ethylenically unsaturated hydrocarbon and a polyurethane polymer, the novel composition, as well as articles prepared from the blend and the blend prepared by the novel process.Type: GrantFiled: April 28, 1988Date of Patent: July 25, 1989Assignee: Shell Oil CompanyInventors: Richard L. Danforth, Dale L. Handlin, Jr., William P. Gergen, Robert G. Lutz
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Patent number: 4820578Abstract: A weatherproof coating for roofs or decks is formed when an adhering material is used in conjunction with a nonwoven mat formed from a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon.Type: GrantFiled: April 28, 1988Date of Patent: April 11, 1989Assignee: Shell Oil CompanyInventors: Richard L. Danforth, Dennis W. Gilmore
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Patent number: 4749430Abstract: An encapsulated assemblage and a process for making comprising:(a) silanizing a substrate;(b) coating the silanized substrate with at least one thin extruded coherent film consisting essentially of:(1) about 75-90 parts by weight of:(a) about 65 to about 75 parts of a selectively hydrogenated two-block polymer (A-B) such that prior to hydrogenation,(1) each A is a polymer block of a monovinyl or alpha alkyl monovinyl arene having a number average molecular weight of 5000 to 75,000 and comprising from about 10 to about 40% by weight of the total block copolymer, and(2) each B is a polymer block having a number average molecular weight of 10,000 to 150,000 and comprising from about 90 to about 60% weight of the total block copolymer, and(b) about 25 to about 35 parts by weight of a selectively hydrogenated multiblock copolymer (A-B) such that:(1) each A is a polymer endblock of a monovinyl or alpha alkyl monovinyl arene having a number average molecular weight of 5,000 to 75,000, said A blocks comprising from aType: GrantFiled: October 16, 1986Date of Patent: June 7, 1988Assignee: Shell Oil CompanyInventors: Gay M. Samuelson, David J. St. Clair, Richard L. Danforth
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Patent number: 4493919Abstract: A thermoplastic molding composition having good low temperature properties in addition to low distortion at paint bake temperatures comprises the blend of a selectively hydrogenated monoalkenyl arene-conjugated diene block copolymer, a vinyl aromatic-.alpha., .beta.-unsaturated cyclic anhydride copolymer, and a thermoplastic polyester.Type: GrantFiled: June 8, 1983Date of Patent: January 15, 1985Assignee: Shell Oil CompanyInventors: Daniel P. Durbin, Robert G. Lutz, Richard L. Danforth
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Patent number: 4377647Abstract: A thermoplastic molding composition having good low temperature properties in addition to low distortion at paint bake temperatures comprises the blend of a selectively hydrogenated monoalkenyl arene-conjugated diene block copolymer, a vinyl aromatic-.alpha., .beta.-unsaturated cyclic anhydride copolymer, and a thermoplastic polyester.Type: GrantFiled: November 16, 1981Date of Patent: March 22, 1983Assignee: Shell Oil CompanyInventors: Daniel P. Durbin, Richard L. Danforth, Robert G. Lutz
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Patent number: H917Abstract: Blends of (a) a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon and (b) a maleated polyolefin polymer exhibit improved properties of thermal stability, impact resistance as better processability.Type: GrantFiled: July 28, 1989Date of Patent: May 7, 1991Assignee: Shell Oil CompanyInventors: William P. Gergen, Robert G. Lutz, Richard L. Danforth