Patents by Inventor Tetsuro Yamanaka

Tetsuro Yamanaka 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).

  • Pseudo cross-link type resin composition, molding material, sheet or film, and optical element obtained therefrom
    Patent number: 7295376
    Abstract: A pseudo cross-link type resin composition made of one of resins or a mixture of the resins; wherein the resin is obtained by mixing a polymer molecule that has an atomic group capable of forming an intermolecular hydrogen bond at least in a molecular side chain or at a molecular tail end of the polymer molecule, and a polymer molecule that has an atomic group capable of forming an intermolecular hydrogen bond at lest in a molecular side chain or in a molecular skeleton of the polymer molecule; wherein the polymer molecule having an atomic group capable of forming an intermolecular hydrogen bond at least in a molecular side chain or at a molecular tail end is a vinylic polymer or a copolymer thereof that has a carboxyl group or a hydroxyl group at least in a molecular side chain or at a molecular tail end, and the polymer molecule that has an atomic group capable of forming an intermolecular hydrogen bond at least in a molecular side chain or in a molecular skeleton is a vinylic polymer or a copolymer thereof
    Type: Grant
    Filed: January 22, 2004
    Date of Patent: November 13, 2007
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Tetsuro Yamanaka, Yukihiko Yamashita, Kenji Kanemaru
  • Pseudo cross-link type resin composition, molding material, sheet or film, and optical element obtained therefrom
    Publication number: 20050038194
    Abstract: A pseudo cross-link type resin composition made of one of resins or a mixture of the resins; wherein the resin is obtained by mixing a polymer molecule that has an atomic group capable of forming an intermolecular hydrogen bond at least in a molecular side chain or at a molecular tail end of the polymer molecule, and a polymer molecule that has an atomic group capable of forming an intermolecular hydrogen bond at lest in a molecular side chain or in a molecular skeleton of the polymer molecule; wherein the polymer molecule having an atomic group capable of forming an intermolecular hydrogen bond at least in a molecular side chain or at a molecular tail end is a vinylic polymer or a copolymer thereof that has a carboxyl group or a hydroxyl group at least in a molecular side chain or at a molecular tail end, and the polymer molecule that has an atomic group capable of forming an intermolecular hydrogen bond at least in a molecular side chain or in a molecular skeleton is a vinylic polymer or a copolymer thereof
    Type: Application
    Filed: January 22, 2004
    Publication date: February 17, 2005
    Inventors: Tetsuro Yamanaka, Yukihiko Yamashita, Kenji Kanemaru
  • Pseudo cross-link type resin composition, molding material, sheet or film, and optical element obtained therefrom
    Patent number: 6767967
    Abstract: A pseudo cross-link type resin composition made of one of resins or a mixture of the resins; wherein the resin is obtained by mixing a polymer molecule that has an atomic group capable of forming an intermolecular hydrogen bond at least in a molecular side chain or at a molecular tail end of the polymer molecule, and a polymer molecule that has an atomic group capable of forming an intermolecular hydrogen bond at lest in a molecular side chain or in a molecular skeleton of the polymer molecule; wherein the polymer molecule having an atomic group capable of forming an intermolecular hydrogen bond at least in a molecular side chain or at a molecular tail end is a vinylic polymer or a copolymer thereof that has a carboxyl group or a hydroxyl group at least in a molecular side chain or at a molecular tail end, and the polymer molecule that has an atomic group capable of forming an intermolecular hydrogen bond at least in a molecular side chain or in a molecular skeleton is a vinylic polymer or a copolymer there
    Type: Grant
    Filed: June 17, 2002
    Date of Patent: July 27, 2004
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Tetsuro Yamanaka, Yukihiko Yamashita, Kenji Kanemaru
  • Pseudo cross-link type resin composition, molding material, sheet or film, and optical element obtained therefrom
    Publication number: 20030232923
    Abstract: A pseudo cross-link type resin composition made of one of resins or a mixture of the resins;
    Type: Application
    Filed: June 17, 2002
    Publication date: December 18, 2003
    Inventors: Tetsuro Yamanaka, Yukihiko Yamashita, Kenji Kanemaru