Patents by Inventor Nobuaki Yasuda

Nobuaki Yasuda 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).

  • Method of manufacturing an optical recording element
    Patent number: 4397923
    Abstract: An optical recording element which comprises a heat-resistant organic resin substrate; a recording layer formed on said substrate by thermal deposition or sputtering; and a transparent organic resin protective layer mounted on the recording layer, and wherein the organic resin substrate and organic resin protective layer are thermally fixed under pressure with the recording layer laid between them.
    Type: Grant
    Filed: June 16, 1981
    Date of Patent: August 9, 1983
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Nobuaki Yasuda, Yoshinori Fujimori, Masaaki Morita
  • Optical recording element and a method of manufacturing the same
    Patent number: 4343862
    Abstract: An optical recording element which comprises a heat-resistant organic resin substrate; a recording layer formed on said substrate by thermal deposition or sputtering; and a transparent organic resin protective layer mounted on the recording layer, and wherein the organic resin substrate and organic resin protective layer are thermally fixed under pressure with the recording layer laid between them.
    Type: Grant
    Filed: July 23, 1980
    Date of Patent: August 10, 1982
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Nobuaki Yasuda, Yoshinori Fujimori, Masaaki Morita
  • Gallium phosphide semiconductor device having improved electrodes
    Patent number: 4228455
    Abstract: A gallium phosphide semiconductor device comprising an N type gallium phosphide monocrystal, a semiconductor layer formed in or on the monocrystal, and a pair of electrodes formed on the monocrystal and on the semiconductor layer. The electrode on the monocrystal is made of a gold-germanium alloy having a predetermined germanium content.
    Type: Grant
    Filed: August 29, 1978
    Date of Patent: October 14, 1980
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Nobuaki Yasuda, Takenobu Ogawa, Tetsuo Sadamasa