Patents by Inventor Koyoko Kato

Koyoko Kato 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: D315687
    Type: Grant
    Filed: February 12, 1988
    Date of Patent: March 26, 1991
    Assignee: Seikosha Co., Ltd.
    Inventor: Koyoko Kato