Patents by Inventor Hiroyoshi Sato

Hiroyoshi Sato 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).

  • Key telephone set
    Patent number: D301031
    Type: Grant
    Filed: October 22, 1986
    Date of Patent: May 9, 1989
    Assignees: Nitsuko Limited, Nippon Telegraph and Telephone Corporation
    Inventors: Yoshio Sasaki, Hiroyoshi Sato, Iwamasa Nishikado, Tsuneji Kimeda
  • Telephone handset
    Patent number: D309726
    Type: Grant
    Filed: October 22, 1986
    Date of Patent: August 7, 1990
    Assignees: Nitsuko Limited, Nippon Telegraph and Telephone Corporation
    Inventors: Yoshio Sasaki, Hiroyoshi Sato, Iwamasa Nishikado, Tsuneji Kimeda