Patents by Inventor Michiaki Kotsuka

Michiaki Kotsuka 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).

  • Computer display
    Patent number: D276433
    Type: Grant
    Filed: August 17, 1982
    Date of Patent: November 20, 1984
    Assignee: Hitachi, Ltd.
    Inventors: Hideki Takayama, Takeshi Abe, Tsuneo Hisa, Michiaki Kotsuka, Shuichi Hara
  • Portable computer
    Patent number: D294029
    Type: Grant
    Filed: October 25, 1985
    Date of Patent: February 2, 1988
    Assignee: Hitachi, Keiyo Engineering Co., Ltd.
    Inventors: Kazuhiko Nishiyama, Michiaki Kotsuka, Kazuyuki Hukushima
  • Programmable controller
    Patent number: D307740
    Type: Grant
    Filed: August 22, 1986
    Date of Patent: May 8, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Masato Shibayama, Kazuyuki Tsuburaya, Michiaki Kotsuka, Takayuki Oshiga, Katsuhiro Fujiwara
  • Portable computer
    Patent number: D317302
    Type: Grant
    Filed: August 7, 1989
    Date of Patent: June 4, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Shinji Shibuya, Nobuo Fukuda, Yoshihiro Kawakatsu, Michiaki Kotsuka, Masaaki Eishima
  • Portable computer
    Patent number: D336638
    Type: Grant
    Filed: July 18, 1991
    Date of Patent: June 22, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Shinji Shibuya, Shunji Fujimori, Nobuo Fukuda, Michiaki Kotsuka, Kazuyuki Fukushima