Patents by Inventor Shigenao Kuwahara
Shigenao Kuwahara 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: 9534111Abstract: The present invention relates to a rubber composition including (A) at least one rubber component selected from the group consisting of a synthetic rubber and a natural rubber; (B) a polymer of farnesene; and (C) carbon black having an average particle size of from 5 to 100 nm, a content of the carbon black (C) in the rubber composition being from 20 to 100 parts by mass on the basis of 100 parts by mass of the rubber component (A).Type: GrantFiled: November 10, 2014Date of Patent: January 3, 2017Assignees: KURARAY CO., LTD., AMYRIS, INC.Inventors: Shigenao Kuwahara, Kei Hirata, Daisuke Koda
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Patent number: 9056976Abstract: The invention provides a thermoplastic polymer composition containing a hydrogenated block copolymer mixture (a), a polyvinyl acetal (b), and a thermoplastic elastomer (c), wherein the hydrogenated block copolymer mixture (a) contains a hydrogenated block copolymer (a1) containing hydrogenated polymer blocks (A1) containing aromatic vinyl units and hydrogenated polymer blocks (B1) containing conjugated diene units and a hydrogenated block copolymer (a2) containing hydrogenated polymer blocks (A2) containing aromatic vinyl units and hydrogenated polymer blocks (B2) containing conjugated diene units; (A1) content is 5 mass % or higher and lower than 40 mass % in (a1); (A2) content is 40 mass % to 70 mass % in (a2); the polyvinyl acetal (b) has been produced through acetalization of a polyvinyl alcohol; and the thermoplastic elastomer (c) contains hydrogenated polymer blocks (A3) containing aromatic vinyl units, hydrogenated polymer blocks (B3) containing conjugated diene units, and polymer blocks having a polarType: GrantFiled: March 30, 2011Date of Patent: June 16, 2015Assignee: KURARAY CO., LTD.Inventors: Shigenao Kuwahara, Asako Minamide
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Publication number: 20150065636Abstract: The present invention relates to a rubber composition including (A) at least one rubber component selected from the group consisting of a synthetic rubber and a natural rubber; (B) a polymer of farnesene; and (C) carbon black having an average particle size of from 5 to 100 nm, a content of the carbon black (C) in the rubber composition being from 20 to 100 parts by mass on the basis of 100 parts by mass of the rubber component (A).Type: ApplicationFiled: November 10, 2014Publication date: March 5, 2015Applicants: KURARAY CO., LTD., AMYRIS, Inc.Inventors: Shigenao KUWAHARA, Kei HIRATA, Daisuke KODA
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Patent number: 8912269Abstract: The present invention relates to a rubber composition including (A) at least one rubber component selected from the group consisting of a synthetic rubber and a natural rubber; (B) a polymer of farnesene; and (C) carbon black having an average particle size of from 5 to 100 nm, a content of the carbon black (C) in the rubber composition being from 20 to 100 parts by mass on the basis of 100 parts by mass of the rubber component (A).Type: GrantFiled: September 21, 2012Date of Patent: December 16, 2014Assignees: Kuraray Co., Ltd., Amyris, Inc.Inventors: Shigenao Kuwahara, Kei Hirata, Daisuke Koda
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Publication number: 20140213715Abstract: The present invention relates to a rubber composition including (A) at least one rubber component selected from the group consisting of a synthetic rubber and a natural rubber; (B) a polymer of farnesene; and (C) carbon black having an average particle size of from 5 to 100 nm, a content of the carbon black (C) in the rubber composition being from 20 to 100 parts by mass on the basis of 100 parts by mass of the rubber component (A).Type: ApplicationFiled: September 21, 2012Publication date: July 31, 2014Applicants: AMYRIS, INC., KURARAY CO., LTD.Inventors: Shigenao Kuwahara, Kei Hirata, Daisuke Koda
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Patent number: 8785542Abstract: The present invention relates to a rubber composition including (A) at least one rubber component selected from the group consisting of a synthetic rubber and a natural rubber; (B) a polymer of farnesene having a weight-average molecular weight of not less than 2,000 and less than 25,000; and (C) carbon black.Type: GrantFiled: September 21, 2012Date of Patent: July 22, 2014Assignees: Kuraray Co., Ltd., Amyris, Inc.Inventors: Shigenao Kuwahara, Kei Hirata, Daisuke Koda
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Publication number: 20140155536Abstract: The present invention relates to a rubber composition including (A) at least one rubber component selected from the group consisting of a synthetic rubber and a natural rubber; (B) a polymer of farnesene having a weight-average molecular weight of not less than 2,000 and less than 25,000; and (C) carbon black.Type: ApplicationFiled: September 21, 2012Publication date: June 5, 2014Applicants: AMYRIS, INC., KURARAY CO., LTD.Inventors: Shigenao Kuwahara, Kei Hirata, Daisuke Koda
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Patent number: 8592018Abstract: Provided are a tube which has good transparency, flexibility, and solvent adhesion, and also has excellent clamp resistance, anti-conglutination property, and kink resistance, and a medical device using the tube.Type: GrantFiled: March 9, 2010Date of Patent: November 26, 2013Assignee: Kuraray Co., Ltd.Inventors: Yosuke Uehara, Nobuhiro Moriguchi, Shigenao Kuwahara, Hidetaka Oonuma
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Publication number: 20130090420Abstract: The invention provides a thermoplastic polymer composition which is excellent in flexibility, mechanical properties, moldability, and coloring resistance and which provides excellent adhesion to polar resin, a resin containing an inorganic filler (particularly, glass fiber), ceramic material, glass, or metal, and an article formed from the thermoplastic polymer composition. Specifically, the invention provides a thermoplastic polymer composition containing 100 parts by mass of a hydrogenated block copolymer mixture (a); 0.1 to 100 parts by mass of a polyvinyl acetal (b); and 0.Type: ApplicationFiled: March 30, 2011Publication date: April 11, 2013Applicant: KURARAY CO LTDInventors: Shigenao Kuwahara, Asako Minamide
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Patent number: 8192814Abstract: The present invention relates to a tube in the form of a molded article of a resin composition including a hydrogenated block copolymer (a) which includes a polymer block constituted mainly from an aromatic vinyl compound unit and a polymer block constituted mainly from a specific conjugated diene compound unit and has a glass transition temperature of from ?45 to 30° C., a hydrogenated block copolymer (b) which includes a polymer block constituted mainly from an aromatic vinyl compound unit and a polymer block constituted mainly from a specific conjugated diene compound unit and has a glass transition temperature of less than ?45° C., and a polyolefin-based resin (c), at a specific proportion, said tube being excellent in transparency, flexibility, anti-kinking property, anti-sticking property, clamp resistance, solvent adhesion property, low-temperature impact resistance and heat resistance, as well as a medical device using the tube.Type: GrantFiled: September 4, 2008Date of Patent: June 5, 2012Assignee: Kuraray Co., Ltd.Inventors: Shigenao Kuwahara, Hidetaka Oonuma
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Publication number: 20110319837Abstract: Provided are a tube which has good transparency, flexibility, and solvent adhesion, and also has excellent clamp resistance, anti-conglutination property, and kink resistance, and a medical device using the tube.Type: ApplicationFiled: March 9, 2010Publication date: December 29, 2011Applicant: Kuraray Co., Ltd.Inventors: Yosuke Uehara, Nobuhiro Moriguchi, Shigenao Kuwahara, Hidetaka Oonuma
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Publication number: 20100239802Abstract: The present invention relates to a tube in the form of a molded article of a resin composition including a hydrogenated block copolymer (a) which includes a polymer block constituted mainly from an aromatic vinyl compound unit and a polymer block constituted mainly from a specific conjugated diene compound unit and has a glass transition temperature of from ?45 to 30° C., a hydrogenated block copolymer (b) which includes a polymer block constituted mainly from an aromatic vinyl compound unit and a polymer block constituted mainly from a specific conjugated diene compound unit and has a glass transition temperature of less than ?45° C., and a polyolefin-based resin (c), at a specific proportion, said tube being excellent in transparency, flexibility, anti-kinking property, anti-sticking property, clamp resistance, solvent adhesion property, low-temperature impact resistance and heat resistance, as well as a medical device using the tube.Type: ApplicationFiled: September 4, 2008Publication date: September 23, 2010Applicant: KURARAY CO., LTD.Inventors: Shigenao Kuwahara, Hidetaka Oonuma