Patents by Inventor Satoru Tohyama

Satoru Tohyama 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).

  • Wide digital copying machine
    Patent number: D494210
    Type: Grant
    Filed: August 27, 2003
    Date of Patent: August 10, 2004
    Assignee: Ricoh Company, Ltd.
    Inventors: Yohichi Watanabe, Yoshihisa Minakawa, Satoru Tohyama, Masanao Takahashi, Masateru Kohno