Patents by Inventor Mizuho Hiraoko

Mizuho Hiraoko 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).

  • Optical recording medium
    Patent number: 5173391
    Abstract: An optical recording medium comprises an optical recording layer provided on a substrate, a protective material and a bond layer for bonding the optical recording layer to the protective material, the bond layer having a thermoplastic adhesive comprising at least one of (A) at least one selected from an ethylene-acrylic acid copolymer and an ethylene-acrylate ester copolymer and (B) an ethylene-maleic anhydride-acrylic acid terpolymer; and (C) a tackifier.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: December 22, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mizuho Hiraoko, Hiroyuki Imataki