Patents by Inventor Ken-ichi Tomatsu

Ken-ichi Tomatsu 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).

  • Copying machine
    Patent number: D324064
    Type: Grant
    Filed: September 7, 1989
    Date of Patent: February 18, 1992
    Assignee: Ricoh Company, Ltd.
    Inventors: Ken-ichi Tomatsu, Yoko Nakamura, Tatsuo Okuda, Takafumi Hoshimura