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).

  • Patent number: 9534111
    Abstract: 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: Grant
    Filed: November 10, 2014
    Date of Patent: January 3, 2017
    Assignees: KURARAY CO., LTD., AMYRIS, INC.
    Inventors: Shigenao Kuwahara, Kei Hirata, Daisuke Koda
  • Patent number: 9056976
    Abstract: 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 polar
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: June 16, 2015
    Assignee: KURARAY CO., LTD.
    Inventors: Shigenao Kuwahara, Asako Minamide
  • Publication number: 20150065636
    Abstract: 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: Application
    Filed: November 10, 2014
    Publication date: March 5, 2015
    Applicants: KURARAY CO., LTD., AMYRIS, Inc.
    Inventors: Shigenao KUWAHARA, Kei HIRATA, Daisuke KODA
  • Patent number: 8912269
    Abstract: 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: Grant
    Filed: September 21, 2012
    Date of Patent: December 16, 2014
    Assignees: Kuraray Co., Ltd., Amyris, Inc.
    Inventors: Shigenao Kuwahara, Kei Hirata, Daisuke Koda
  • Publication number: 20140213715
    Abstract: 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: Application
    Filed: September 21, 2012
    Publication date: July 31, 2014
    Applicants: AMYRIS, INC., KURARAY CO., LTD.
    Inventors: Shigenao Kuwahara, Kei Hirata, Daisuke Koda
  • Patent number: 8785542
    Abstract: 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: Grant
    Filed: September 21, 2012
    Date of Patent: July 22, 2014
    Assignees: Kuraray Co., Ltd., Amyris, Inc.
    Inventors: Shigenao Kuwahara, Kei Hirata, Daisuke Koda
  • Publication number: 20140155536
    Abstract: 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: Application
    Filed: September 21, 2012
    Publication date: June 5, 2014
    Applicants: AMYRIS, INC., KURARAY CO., LTD.
    Inventors: Shigenao Kuwahara, Kei Hirata, Daisuke Koda
  • Patent number: 8592018
    Abstract: 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: Grant
    Filed: March 9, 2010
    Date of Patent: November 26, 2013
    Assignee: Kuraray Co., Ltd.
    Inventors: Yosuke Uehara, Nobuhiro Moriguchi, Shigenao Kuwahara, Hidetaka Oonuma
  • Publication number: 20130090420
    Abstract: 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: Application
    Filed: March 30, 2011
    Publication date: April 11, 2013
    Applicant: KURARAY CO LTD
    Inventors: Shigenao Kuwahara, Asako Minamide
  • Patent number: 8192814
    Abstract: 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: Grant
    Filed: September 4, 2008
    Date of Patent: June 5, 2012
    Assignee: Kuraray Co., Ltd.
    Inventors: Shigenao Kuwahara, Hidetaka Oonuma
  • Publication number: 20110319837
    Abstract: 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: Application
    Filed: March 9, 2010
    Publication date: December 29, 2011
    Applicant: Kuraray Co., Ltd.
    Inventors: Yosuke Uehara, Nobuhiro Moriguchi, Shigenao Kuwahara, Hidetaka Oonuma
  • Publication number: 20100239802
    Abstract: 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: Application
    Filed: September 4, 2008
    Publication date: September 23, 2010
    Applicant: KURARAY CO., LTD.
    Inventors: Shigenao Kuwahara, Hidetaka Oonuma