Patents by Inventor Yasuo Tazou

Yasuo Tazou 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).

  • LiGaO.sub.2 single crystal, single-crystal substrate, and method of manufacturing the same
    Patent number: 6077342
    Abstract: An LiGaO.sub.2 single crystal manufactured by the Czochralski method has a crystallographic axis as a pulling direction set within an angle range of 30.degree. from a b- or a-axis direction. An LiGaO.sub.2 single-crystal substrate and a method of manufacturing the single crystal and the substrate are also disclosed.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: June 20, 2000
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Takao Ishii, Shintaro Miyazawa, Yasuo Tazou
  • Method of manufacturing a LiGaO.sub.2 single-crystal substrate
    Patent number: 6045611
    Abstract: An LiGaO.sub.2 single crystal manufactured by the Czochralski method has a crystallographic axis as a pulling direction set within an angle range of 30.degree. from a b- or a-axis direction. An LiGaO.sub.2 single-crystal substrate and a method of manufacturing the single crystal and the substrate are also disclosed.
    Type: Grant
    Filed: January 27, 1998
    Date of Patent: April 4, 2000
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Takao Ishii, Shintaro Miyazawa, Yasuo Tazou