Patents by Inventor Kohei Hamanishi

Kohei Hamanishi 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).

  • Photo-curable silicone compositions and adhesive silicone compositions
    Patent number: 5158988
    Abstract: Disclosed is a curable silicone composition comprising: (A) an organopolysiloxane having a silicon-bonded unsaturated aliphatic radical; (B) an organopolysiloxane having a silicon-bonded mercaptoalkyl radical; and (C) a photoreaction-initiating amount of photoreaction initiator. The photoreaction initiator includes arylcarbonyl phosphine oxide compounds, having a radical selected from the group consisting of substituted and unsubstituted aryl radicals, and another two radicals selected from the group consisting of substituted and unsubstituted monovalent hydrocarbon radicals. The above silicone, composition is efficiently cured by visible light radiation and usable for photo-curable adhesives.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: October 27, 1992
    Assignee: Toshiba Silicone Co., Ltd.
    Inventors: Atsushi Kurita, Nobuyuki Nishiwaki, Shigeki Matsushita, Kohei Hamanishi
  • Optical information recording medium
    Patent number: 4908294
    Abstract: An optical information recording medium includes an optical information recording layer supported on a substrate.
    Type: Grant
    Filed: February 6, 1987
    Date of Patent: March 13, 1990
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Toshiyuki Kanno, Hitoshi Watanabe, Kohei Hamanishi