Patents by Inventor Keita Tanaka

Keita Tanaka 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).

  • Unit for extending the functions of an electronic computer
    Patent number: D368704
    Type: Grant
    Filed: April 18, 1995
    Date of Patent: April 9, 1996
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Keita Tanaka
  • Electronic computer
    Patent number: D388401
    Type: Grant
    Filed: September 16, 1996
    Date of Patent: December 30, 1997
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Keita Tanaka
  • Electronic computer
    Patent number: D401572
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: November 24, 1998
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Keita Tanaka