Patents by Inventor Ginro Takemura

Ginro Takemura 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 semiconductor device
    Patent number: 4367483
    Abstract: An optical semiconductor device includes a light emitting element disposed on a silicon sub-mount having a light receiving element formed in a surface region. By virtue of integral arrangement of the light emitting element and the light receiving element, a single lens can be used for both optical transmission and optical reception, whereby an optical communication system can be manufactured very inexpensively. Further, transmission and reception can be carried out simultaneously.
    Type: Grant
    Filed: October 2, 1980
    Date of Patent: January 4, 1983
    Assignee: Hitachi, Ltd.
    Inventors: Takeo Takahashi, Kazuhiro Kurata, Yuichi Ono, Kazuhiro Ito, Makoto Morioka, Mitsuhiro Mori, Ginro Takemura, Makoto Sakamoto, Masahiro Ichiki, Youichi Yasuda, Hirobumi Ouchi