Patents by Inventor Yuichi Ohnumata

Yuichi Ohnumata 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).

  • Electronic calculator
    Patent number: D304731
    Type: Grant
    Filed: November 24, 1986
    Date of Patent: November 21, 1989
    Assignee: Casio Computer Co., Ltd.
    Inventor: Yuichi Ohnumata
  • Hand held electronic copying machine
    Patent number: D318291
    Type: Grant
    Filed: June 2, 1989
    Date of Patent: July 16, 1991
    Assignee: Casio Computer Co., Ltd.
    Inventor: Yuichi Ohnumata