Patents by Inventor Kissho Kitano
Kissho Kitano 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: 5216054Abstract: A polymer composition comprising resin components comprising (a) 5-95 weight % of a polyamide resin, and (b) 5-95 weight % of polyolefin + unsaturated carboxylic acid-modified polyolefin, and (c) additives comprising the following compounds in amounts per 100 parts by weight of the total composition: (1) 0.1-2 parts by weight of a substituted hydrazine: (2) 0.05-2 parts by weight of a hindered phenol compound; (3) 0.05-0.5 parts by weight of a phosphite or phosphonite; and (4) 0.15-1 parts by weight of a thiodipropionate.Type: GrantFiled: February 27, 1992Date of Patent: June 1, 1993Assignee: Tonen Sekiyukagaku Kabushiki KaishaInventors: Kunio Iwanami, Kissho Kitano, Yukihiko Yagi, Takashi Mikami
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Patent number: 5153289Abstract: A water soluble copolymer having the structure: ##STR1## wherein X is about 1 to about 99 mole percent and y is about 99 to about 1 mole percent.Type: GrantFiled: July 5, 1989Date of Patent: October 6, 1992Assignee: Exxon Research and Engineering CompanyInventors: Donald N. Schulz, Kissho Kitano
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Patent number: 5147931Abstract: A thermoplastic resin composition which comprises 1 to 98 parts by weight of polyolefin (A), 1 to 49 parts by weight of modified polyolefin (B) obtained by reacting a polyolefin with an unsaturated carboxylic acid or a derivative thereof, 1 to 98 parts by weight of polyamide (C) [provided that (A)+(B)+(C)=100 parts by weight], 5 to 50 parts by weight of modified ethylene-.alpha.-olefin copolymer (D) obtained by reacting a low-crystalline ethylene-.alpha.-olefin copolymer with an unsaturated carboxylic acid or its derivative, and a metal compound (E) in an amount of 0.5 to 5 times the molar quantity of the acid added to said component (B) and said component (D).The thermoplastic resin composition is preferably used for producing products excellent in both impact resistance and surface luster.Type: GrantFiled: June 14, 1991Date of Patent: September 15, 1992Assignee: Tonen Sekiyukageku, K.K.Inventors: Masato Sakuma, Yuji Fujita, Kissho Kitano, Yukihiko Yagi, Masao Sakaizawa, Noburo Yamamoto
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Patent number: 5106893Abstract: A fiber-reinforced polymer composition containing resin components including (a) 30-90 weight % of a polyamide resin, and (b) 10-70 weight % of polyolefin+unsaturated carboxylic acid-modified polyolefin, based on the resin components; and, per 100 parts by weight of the total components, (c) 5-50 parts by weight of glass fibers, and (d) additives including the following set of additives: 0.1-1 parts by weight of N,N'-hexamethylene-bis (3,5-di-tert-butyl-4-hydroxy-hydrocinnamide); 0.1-1 parts by weight of triethylene glycol-bis [3-(3-tert-butyl-5-methyl-4-hydroxyphenyl) propionate]; and 0.1-1 parts by weight of pentaerythrityl-tetrakis [3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate]. An alternative set of additives are 0.1-2 parts by weight of N,N'-bis [3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionyl] hydrazine; 0.05-0.5 parts by weight of pentaerythrityl-tetrakis [3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate]; 0.05-0.5 parts by weight of distearyl-pentaerythritol diphosphite; and 0.Type: GrantFiled: February 7, 1991Date of Patent: April 21, 1992Assignees: Tonen Sekiyukagaku Kabushiki Kaisha, Nippondenso Co., Ltd.Inventors: Kunio Iwanami, Kissho Kitano, Kiyotada Narukawa, Masato Sakuma, Takashi Mikami, Masami Esaki, Koji Egashira, Hiroyuki Wakabayashi, Fumio Kato
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Patent number: 5106564Abstract: Fiber-reinforced polymer compositions containing resin components including (a) 30-90 weight % of polyamide resins, and (b) 10-70 weight % of polyolefins+unsaturated carboxylic acid-modified polyolefins, based on the resin components; and (c) 5-50 parts by weight of glass fibers per 100 parts by weight of the total compositions, a molar ratio of end amino groups in the polyamide resins to carboxyl groups in the modified polyolefins being 10-1000. The compositions have a morphology in which polyolefin domains having an average size of 0.5-5 .mu.m are uniformly dispersed in polyamide matrix phases.Type: GrantFiled: January 4, 1991Date of Patent: April 21, 1992Assignees: Tonen Sekiyukagaku Kabushiki Kaisha, Nippondenso Co., Ltd.Inventors: Kunio Iwanami, Kissho Kitano, Kiyotada Narukawa, Kenichi Aoki, Yukihiko Yagi, Masato Sakuma, Takashi Mikami, Masami Esaki, Fumio Kato, Koji Egashira, Hiroyuki Wakabayashi
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Patent number: 5013789Abstract: A process for producing a thermoplastic resin composition which comprises preparing a component composed of 1 to 49 parts by weight of modified polyolefin (A) obtained by adding an unsaturated carboxylic acid or a derivative thereof to a polyolefin, 1 to 98 parts by weight of polyolefin (B), and 1 to 98 parts by weight of polyamide (C) [provided that (A)+(B)+(C)=100 parts by weight], mixing the component or its molten component with a metal compound (D) in an amount of 0.5 to 5 times the molar quantity of the acid added to the modified polyolefin (A), and subsequently melt-mixing the mixture. The thermoplastic resin composition prepared by this process is preferably used for providing products improved in both surface luster and mechanical strengths.Type: GrantFiled: December 16, 1988Date of Patent: May 7, 1991Assignee: Tonen SekiyukagakuInventors: Masato Sakuma, Yuji Fujita, Kissho Kitano, Yukihiko Yagi, Masao Sakaizawa, Noburo Yamamoto
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Patent number: 4990550Abstract: Fiber-reinforced polymer compositions containing resin components including (a) 30-90 weight % of polyamide resins, and (b) 10-70 weight % of polyolefins+unsaturated carboxylic acid-modified polyolefins, based on the resin components; and (c) 5-50 parts by weight of glass fibers per 100 parts by weight of the total compositions, a molar ratio of end amino groups in the polyamide resins to carboxyl groups in the modified polyolefins being 10-1000. The compositions have a morphology in which polyolefin domains having an average size of 0.5-5 .mu.m are uniformly dispersed in polyamide matrix phases.Type: GrantFiled: March 20, 1989Date of Patent: February 5, 1991Assignees: Tonen Sekiyukagaku Kabushiki Kaisha, Nippondenso Co., Ltd.Inventors: Kunio Iwanami, Kissho Kitano, Kiyotada Narukawa, Kenichi Aoki, Yukihiko Yagi, Masato Sakuma, Takashi Mikami, Masami Esaki, Fumio Kato, Koji Egashira, Hiroyuki Wakabayashi
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Patent number: 4880436Abstract: A method of viscosifying an organic liquid which comprises adding a sufficient quantity of a hydrolyzed Ziegler Natta-ester containing copolymer haivng a molecular weight of about 100,00 to about 10,000,000 to said organic liquid to increase the viscosity of said organic liquid, said copolymer having the formula: ##STR1## wherein R.sub.1 is an alkyl group having about 4 to about 6 carbon atoms, R.sub.2 is an alkylene group having 3 to 16 carbon atoms, x is about 95.0 to about 99.95 mole % and y is about 0.05 to about 5.0 mole %.Type: GrantFiled: November 20, 1987Date of Patent: November 14, 1989Assignee: Exxon Research and Engineering CompanyInventors: Kissho Kitano, Ilan Duvdevani, Donald N. Schulz
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Patent number: 4715865Abstract: A method of viscosifying an organic liquid which comprises adding a sufficient quantity of a hydrolyzed Ziegler Natta-ester containing copolymer having a molecular weight of about 100,000 to about 10,000,000 to said organic liquid to increase the viscosity of said organic liquid, said copolymer having the formula: ##STR1## wherein R.sub.1 is an alkyl group having about 4 to about 6 carbon atoms, R.sub.2 is an alkylene group having about 3 to about 17 carbon atoms, x is about 95.0 to about 99.95 mole % and y is about 0.05 to about 5.0 mole %.Type: GrantFiled: December 9, 1985Date of Patent: December 29, 1987Assignee: Exxon Research and Engineering CompanyInventors: Kissho Kitano, Ilan Duvdevani, Donald N. Schulz
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Patent number: 4625745Abstract: A method for reducing the frictional drag of an organic liquid in flow through pipes or conduits having a continuous bore therethrough which comprises adding about 0.001 to about 0.5 grams of a polymeric complex to said organic liquid, wherein the polymeric complex is the reaction product of a copolymer containing an alpha-olefin and vinyl alkylenecarboxylic acid and a basic nitrogen-containing compolymer, wherein said acid copolymer of alpha-olefin and vinyl alkylenecarboxylic acid has the formula: ##STR1## wherein R.sub.1 is an alkyl group having 1 to 25 carbon atoms, Z is an alkyl group having about 1 to about 25 carbon atoms, R.sub.2 is an alkylene group having about 3 to about 17 carbon atoms, x is about 95.0 to about 99.99 mole % and y is about 5.0 to about 0.01 mole % and z is about 0.01 to about 5.Type: GrantFiled: July 22, 1985Date of Patent: December 2, 1986Assignee: Exxon Research and Engineering CompanyInventors: Ralph M. Kowalik, Ilan Duvdevani, Kissho Kitano, Donald N. Schulz
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Patent number: 4621111Abstract: A process for increasing the viscosity of a hydrocarbon liquid having a viscosity of at least about 10 cP which includes the steps of:(a) forming a first solution of an organic hydrocarbon liquid and a hydrolyzed Ziegler-Natta ester containing copolymer of an alpha-olefin and a vinyl alkylenecarboxylic acid having an acid content of from about 0.01 to 10 mole percent and a molecular weight of about 100,000 to about 10,000,000, wherein said copolymer of said alpha-olefin and said vinyl alkylenecarboxylic acid has the formula: ##STR1## wherein Z is a mixture of H and an alkyl group having about 1 to about 25 carbon atoms, wherein H comprises about 55 to about 99 mole % of Z, R.sub.1 is an alkyl group having about 1 to about 25 carbon atoms, R.sub.2 is an alkylene group having about 1 to about 17 carbon atoms, x is about 99.99 to about 95.0 mole %, more preferably about 99.95 to about 97.0 and most preferably about 99.90 to about 98.Type: GrantFiled: December 2, 1985Date of Patent: November 4, 1986Assignee: Exxon Research and Engineering CompanyInventors: Ilan Duvdevani, Donald N. Schulz, Kissho Kitano, Dennis G. Peiffer
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Patent number: 4607076Abstract: A water soluble copolymer having the structure: ##STR1## wherein X is about 1 to about 99 mole percent and y is about 99 to about 1 mole percent.Type: GrantFiled: January 2, 1985Date of Patent: August 19, 1986Assignee: Exxon Research and Engineering Co.Inventors: Donald N. Schulz, Kissho Kitano
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Patent number: 4599377Abstract: The present invention relates to a process for the viscosification of an organic liquid which comprises the steps of forming a first solution of a polymer containing carboxylic acid side groups dissolved in the organic liquid; forming a second solution of a basic polymer in the organic liquid and mixing the first and the second solutions together to form an interpolymer complex of the acid containing and basic polymers in the organic liquid, wherein the organic liquid containing the interpolymer complex has improved viscosification properties. This solution possesses higher viscosity than the mean of the separate viscosities of the starting solutions at relatively low solids content. Moreover, these interpolymer complexes, in hydrocarbon solutions, can be formulated to exhibit shear thickening at increased shear rates. This property is useful in such technological applications as antimisting of the solvent.Type: GrantFiled: July 19, 1985Date of Patent: July 8, 1986Assignee: Exxon Research and Engineering Co.Inventors: Ilan Duvdevani, Donald N. Schulz, Kissho Kitano, Dennis G. Peiffer
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Patent number: 4586937Abstract: An antimisting hydrocarbon solution comprising a hydrocarbon mixed with a copolymer of an alphaolefin and a vinyl alkylenecarboxylic acid, wherein the concentration of said copolymer in said hydrocarbon is about 0.05 to about 2 grams per 100 ml of said solution, wherein said copolymer has the formula: ##STR1## wherein R.sub.1 is an alkyl group having about 1 to about 25 carbon atoms, R.sub.2 is an alkylene group having about 3 to 17 carbon atoms, x is about 95.0 to about 99.99 mole % and y is about 0.01 to about 5 mole %.Type: GrantFiled: June 29, 1984Date of Patent: May 6, 1986Assignee: Exxon Research and Engineering Co.Inventors: Ilan Duvdevani, John A. Eckert, Donald N. Schulz, Kissho Kitano
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Patent number: 4523929Abstract: An antimisting hydrocarbon solution comprising a hydrocarbon mixed with a copolymer of an alpha-olefin and a vinyl alkylenecarboxylic acid, wherein the concentration of said copolymer in said hydrocarbon is about 0.05 to about 2 grams per 100 ml of said solution, wherein such copolymer has the formula: ##STR1## wherein R.sub.1 is an alkyl group having about 1 to about 25 carbon atoms, R.sub.2 is an alkylene group having about 3 to 17 carbon atoms, Z is a mixture of hydrogen and an alkyl group having about 1 to 25 carbon atoms, x is about 95.0 to about 99.99 mole % and y is about 0.01 to about 5 mole %, wherein hydrogen comprises about 1 to about 45 mole % of Z.Type: GrantFiled: June 28, 1984Date of Patent: June 18, 1985Assignee: Exxon Research & Engineering Co.Inventors: Ilan Duvdevani, John A. Eckert, Donald N. Schulz, Kissho Kitano
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Patent number: 4518757Abstract: The present invention relates to improved drag reduction agents which are copolymers of an alpha olefin and a vinyl alkylenecarboxylic ester.Type: GrantFiled: December 23, 1983Date of Patent: May 21, 1985Assignee: Exxon Research & Engineering Co.Inventors: Donald N. Schulz, Kissho Kitano, Terry J. Burkhardt, Arthur W. Langer
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Patent number: 4480693Abstract: The present invention relates to materials which reduce the filtration of fluid into permeable earth formations during cementing processes in the drilling and completing of subterranean wells, particularly wells for the recovery of petroleum resources.Petroleum well cementing is the process of mixing a slurry of cement, water, and other additives and pumping it down through steel casing to critical points in the oil well annulus around the casing or in the open hole below the casing string. The primary functions of the cementing process are to restrict fluid movement between geological formations and to bond and support the casing. In addition the cement aids in protecting the casing from corrosion, preventing blowouts by quickly sealing formations, protecting the casing from shock loads in drilling deeper wells, and sealing off lost circulation or thief zones.A common problem in petroleum well cementing is the flow of liquid from the cement slurry into porous earth formations in contact with the cement.Type: GrantFiled: December 23, 1983Date of Patent: November 6, 1984Assignee: Exxon Research & Engineering Co.Inventors: John C. Newlove, Robert C. Portnoy, Donald N. Schulz, Kissho Kitano