Patents by Inventor Kouichi Tatsumi

Kouichi Tatsumi 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).

  • Patent number: D304816
    Type: Grant
    Filed: March 17, 1987
    Date of Patent: November 28, 1989
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Kouichi Tatsumi
  • Patent number: D307406
    Type: Grant
    Filed: March 17, 1987
    Date of Patent: April 24, 1990
    Assignee: Sumitomo Rubber Industries
    Inventor: Kouichi Tatsumi