Patents by Inventor Kenichirou Hatayama

Kenichirou Hatayama 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).

  • Curable composition and hardcoated article employing same
    Patent number: 6777102
    Abstract: A curable composition that is curable by polymerizing both a group capable of ring-opening polymerization and an ethylenically unsaturated group includes a cross-linkable polymer containing a repeating unit represented by the formula below, the group capable of ring-opening polymerization being present in a side chain of the polymer. A hardcoated article is formed by curing the curable composition. Its hardcoat layer has a pencil hardness of 4H to 9H. A hardcoated film is formed by coating on a plastic film the curable composition and curing it. The hardcoated film is used, for example, to laminate the front face of an image display device. In the formula, R1 denotes hydrogen or an alkyl group having 1 to 4 carbon atoms, P1 is a monovalent group containing a group capable of ring-opening polymerization, and L1 is a single bond or a divalent linking group.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: August 17, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Seiya Sakurai, Yuuzou Muramatsu, Akihiro Matsufuji, Kenichirou Hatayama
  • Curable composition and hardcoated article employing same
    Publication number: 20030004221
    Abstract: A curable composition that is curable by polymerizing both a group capable of ring-opening polymerization and an ethylenically unsaturated group includes a cross-linkable polymer containing a repeating unit represented by the formula below, the group capable of ring-opening polymerization being present in a side chain of the polymer. A hardcoated article is formed by curing the curable composition. Its hardcoat layer has a pencil hardness of 4H to 9H. A hardcoated film is formed by coating on a plastic film the curable composition and curing it. The hardcoated film is used, for example, to laminate the front face of an image display device.
    Type: Application
    Filed: February 22, 2002
    Publication date: January 2, 2003
    Inventors: Seiya Sakurai, Yuuzou Muramatsu, Akihiro Matsufuji, Kenichirou Hatayama