Patents by Inventor Yoichi Shirai

Yoichi Shirai 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).

  • Camera
    Patent number: D295527
    Type: Grant
    Filed: September 12, 1985
    Date of Patent: May 3, 1988
    Assignee: Ricoh Company, Ltd.
    Inventors: Koichi Soda, Tetsuya Goto, Yoichi Shirai
  • 35 mm camera
    Patent number: D339366
    Type: Grant
    Filed: October 22, 1991
    Date of Patent: September 14, 1993
    Assignee: Asahi Kogaku Kogyo K.K.
    Inventor: Yoichi Shirai
  • 35 mm camera
    Patent number: D350554
    Type: Grant
    Filed: October 10, 1991
    Date of Patent: September 13, 1994
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventor: Yoichi Shirai
  • 35 mm camera
    Patent number: D353389
    Type: Grant
    Filed: October 26, 1993
    Date of Patent: December 13, 1994
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventor: Yoichi Shirai