Patents by Inventor Toshikazu Nakata

Toshikazu Nakata 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).

  • Device for semiconductor integrated circuits
    Patent number: 4546376
    Abstract: A device for semiconductor integrated circuits having a silicon single crystal film formed on a sapphire substrate by hetero epitaxy and isolated islands having side planes. One of the side planes makes an angle of 65.degree. or more with the surface of the sapphire substrate at a part at least more than half thickness from the surface of the silicon single crystal film and makes an angle of 55.degree. or less at a residual thickness.
    Type: Grant
    Filed: September 30, 1983
    Date of Patent: October 8, 1985
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Toshikazu Nakata, Takashi Toida