Patents by Inventor Kenzo Chikanari
Kenzo Chikanari 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: 7871557Abstract: The object is to provide a method for producing a film excellent in a quality of odorless or free from deteriorating taste of food contained in a package of the extruded molded article by using an ethylene-?-olefin copolymer excellent in extrusion molding processability. This object is achieved by a method for producing an extruded molded article comprising a step of extruding a copolymer of ethylene and ?-olefin of from 3 to 20 carbon atoms having an activation energy for melt flow of not less than 50 kJ/mol under one of the following conditions: (a) a temperature of melted resin at die gap of T-die is not more than 200° C., (b) a temperature of melted resin at die gap of tubular tie is not more than 170° C.Type: GrantFiled: September 23, 2004Date of Patent: January 18, 2011Assignee: Sumitomo Chemical Company, Ltd.Inventors: Yuki Iseki, Kenzo Chikanari, Yasuro Suzuki
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Publication number: 20090278278Abstract: A method of producing a polyolefin resin film comprising melt-extruding a polyolefin resin from a circular die toward the antigravity direction to form a tubular film and cooling the tubular film while receiving the film toward the antigravity direction, wherein a water-absorbing material containing water and having a width in the gravity direction of 5 mm or more is brought into contact with the peripheral surface of the tubular film to cool the film, at any position distant by 0 to 200 mm toward the gravity direction from the frost line obtained by air cooling.Type: ApplicationFiled: June 21, 2007Publication date: November 12, 2009Inventors: Kenzo Chikanari, Kazuhiro Asami
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Publication number: 20050098927Abstract: The object is to provide a method for producing a film excellent in a quality of odorless or free from deteriorating taste of food contained in a package of the extruded molded article by using an ethylene-?-olefin copolymer excellent in extrusion molding processability. This object is achieved by a method for producing an extruded molded article comprising a step of extruding a copolymer of ethylene and ?-olefin of from 3 to 20 carbon atoms having an activation energy for melt flow of not less than 50 kJ/mol under one of the following conditions: (a) a temperature of melted resin at die gap of T-die is not more than 200° C., (b) a temperature of melted resin at die gap of tubular tie is not more than 170° C.Type: ApplicationFiled: September 23, 2004Publication date: May 12, 2005Applicant: Sumitomo Chemical Company, LimitedInventors: Yuki Iseki, Kenzo Chikanari, Yasuro Suzuki
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Patent number: 6699934Abstract: There is provided a resin composition comprising; (A) from 1 to 99% by weight of a copolymer, which comprises an ethylene unit and an &agr;-olefin unit of 3 to 12 carbon atoms, and satisfies the specific requirements (A-1) to (A-4), and (B) from 99 to 1% by weight of a copolymer, which comprises an ethylene unit and a unit of a compound having a carbon-carbon double bond and an oxygen atom, and satisfies the specific requirements (B-1) and (B-2).Type: GrantFiled: August 10, 2001Date of Patent: March 2, 2004Assignee: Sumitomo Chemical Company, LimitedInventors: Kenzo Chikanari, Satoru Koyama, Daigo Nakanishi
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Publication number: 20020177677Abstract: Ethylene polymer for cast film processing at about 210 to 350° C. having a slip velocity at metal wall of not less than about 30 mm/sec, wherein polymer is obtained by polymerization using a metallocene catalyst; a resin composition for cast film processing at about 210 to 350° C.Type: ApplicationFiled: March 29, 2002Publication date: November 28, 2002Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Kazunori Kanamori, Kenzo Chikanari, Tatsuhiro Nagamatsu
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Publication number: 20020065370Abstract: There is provided a resin composition comprising:Type: ApplicationFiled: August 10, 2001Publication date: May 30, 2002Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Kenzo Chikanari, Satoru Koyama, Daigo Nakanishi
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Patent number: 6017999Abstract: A saturated polyester resin composition excellent in impact resistance is prepared by melt kneading (A) 30-58 parts by weight of a saturated polyester resin, (B) 42-70 parts by weight of an epoxy group-containing ethylene copolymer comprising (a) 50-99% by weight of ethylene unit, (b) 0.1-30% by weight of unsaturated carboxylic acid glycidyl ester unit or unsaturated glycidyl ether unit, and (c) 0-49% by weight of ethylenically unsaturated ester compound unit, (C) 0.Type: GrantFiled: September 27, 1994Date of Patent: January 25, 2000Assignee: Sumitomo Chemical Company, LimitedInventors: Tadayuki Ohmae, Yoshiki Toyoshima, Kentaro Mashita, Noboru Yamaguchi, Kenzo Chikanari
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Patent number: 5847042Abstract: A polyolefin resin composition of the present invention comprising 0.01 to 2.0 parts by weight of an anti-blocking agent per 100 parts by weight of a polyolefin resin, wherein said anti-blocking agent has substantially two or more maximum values in a weight-based particle size distribution and a difference between a particle diameter giving the largest maximum value and a particle diameter giving the smallest maximum value is not less than 3.0 .mu.m.Type: GrantFiled: September 18, 1995Date of Patent: December 8, 1998Assignee: Sumitomo Chemical Company, LimitedInventors: Satoru Hosoda, Satoru Koyama, Kenzo Chikanari
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Patent number: 5623018Abstract: Disclosed is a thermoplastic resin composition comprising (A) an amorphous resin and further comprising, per 100 parts by weight of the amorphous resin,0.01 to 20 parts by weight of (B) an epoxy group-containing ethylene copolymer, and0.01 to 20 parts by weight of at least one member selected from the group consisting of (C) a polyfunctional compound and (D) a carboxylic acid metal salt, wherein the polyfunctional compound contains, per molecule, at least two identical or different functional groups selected from the group consisting of carboxyl group, amino group, carboxylic acid anhydride group and a unit represented by the formula (1) ##STR1## wherein X and Y are identical and each represents oxygen atom or sulfur atom, or one of X and Y is an oxygen atom and the other is a sulfur atom, or wherein the polyfunctional compound contains, per molecule, at least one unit represented by the formula (2) ##STR2## wherein Z represents oxygen atom or sulfur atom.Type: GrantFiled: June 7, 1995Date of Patent: April 22, 1997Assignees: Sumitomo Chemical Company, Ltd., Sumika A&L Inc.Inventors: Tadayuki Ohmae, Noboru Yamaguchi, Kenzo Chikanari, Kiyoshi Ogura
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Patent number: 5508347Abstract: Disclosed is a thermoplastic resin composition comprising (A) an amorphous resin and further comprising, per 100 parts by weight of the amorphous resin,0.01 to 20 parts by weight of (B) an epoxy group containing ethylene copolymer, and0.01 to 20 parts by weight of at least one member selected from the group consisting of (C) a polyfunctional compound and (D) a carboxylic acid metal salt, wherein the polyfunctional compound contains, per molecule, at least two identical or different functional groups selected from the group consisting of carboxyl group, amino group, carboxylic acid anhydride group and a unit represented by the formula (1) ##STR1## wherein X and Y are identical and each represents oxygen atom or sulfur atom, or one of X and Y is an oxygen atom and the other is a sulfur atom, or wherein the polyfunctional compound contains, per molecule, at least one unit represented by the formula (2) ##STR2## wherein Z represents oxygen atom or sulfur atom.Type: GrantFiled: June 15, 1994Date of Patent: April 16, 1996Assignees: Sumitomo Chemical Company, Limited, Sumitomo Dow LimitedInventors: Tadayuki Ohmae, Noboru Yamaguchi, Kenzo Chikanari, Kiyoshi Ogura
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Patent number: 5405909Abstract: A thermoplastic elastomer composition which is useful for bumper, boot, sound absorbing gear, sports shoes etc. is provided by mixing the following (A)-(D).A: 30-58 parts by wt of saturated polyester resin,B: 42-70 parts by wt of an epoxy group-containing ethylene copolymer ofa) 50-99% by wt of ethylene unit,b) 0.1-30% by wt of unsaturated carboxylic acid glycidyl ester unit or unsaturated glycidyl ether unit andc) 0-49% by wt of ethylenically unsaturated ester unitC: 0.01-20 parts by wt of specific polyfunctional compound containing two or more functional groups, andD: 1-30 parts by wt of block copolyether ester elastomer.The amounts of C and D are based on 100 parts of A and B.Type: GrantFiled: October 26, 1993Date of Patent: April 11, 1995Assignee: Sumitomo Chemical Co., Ltd.Inventors: Tadayuki Ohmae, Yoshiki Toyoshima, Kentaro Mashita, Noboru Yamaguchi, Kenzo Chikanari
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Patent number: 5367013Abstract: A process for producing a reinforced crystalline engineering plastic composition is disclosed, comprising melt-kneading (A) from 60 to 97 parts by weight of a crystalline engineering plastic and (B) from 5 to 100 parts by weight, per 100 parts by weight of the sum of (A) and (C), of glass fibers and melt-kneading the resulting mixture with (C) from 3 to 40 parts by weight of an epoxy- or acid anhydride-containing ethylene copolymer. The composition obtained provides, with excellent moldability, a molded article having an improved appearance while exhibiting well-balanced mechanical and thermal properties.Type: GrantFiled: October 9, 1992Date of Patent: November 22, 1994Assignee: Sumitomo Chemical Company, LimitedInventors: Tadayuki Ohmae, Yoshiki Toyoshima, Hisao Tanaka, Noboru Yamaguchi, Kenzo Chikanari
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Patent number: 5292803Abstract: There is disclosed a process for the production of polymeric polyols, which comprises the steps of:partially or completely saponifying a heterogeous two-phase mixture of (a) a heated molten liquid containing an ethylene-saturated carboxylic acid vinyl ester copolymer having a number average molecular weight of from 800 to 5000 and a saturated carboxylic acid vinyl ester content of from 1 to 50% by weight, and (b) an aliphatic alcohol, in the presence of an alkali catalyst, while removing a saturated carboxylic acid alkyl ester byproduct from the reaction system;then removing the residual aliphatic alcohol from the reaction system; andsupplying an alkylene oxide to effect an alkylene oxide-addition reaction, optionally after further supplying the alkali catalyst.Type: GrantFiled: October 6, 1992Date of Patent: March 8, 1994Assignee: Sumitomo Chemical Company, LimitedInventors: Tadayuki Ohmae, Hisao Tanaka, Sumio Hara, Kenzo Chikanari