Patents by Inventor Bunzo Koyama

Bunzo Koyama 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).

  • Rear light of motor vehicle
    Patent number: D518193
    Type: Grant
    Filed: March 9, 2004
    Date of Patent: March 28, 2006
    Assignee: Mazda Motor Corporation
    Inventors: Bunzo Koyama, Kouichi Hayashi
  • Bumper of motor vehicle
    Patent number: D498443
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: November 16, 2004
    Assignee: Mazda Motor Corporation
    Inventors: Bunzo Koyama, Satoshi Hayasaka, Yoshikazu Miyachi, Kouichi Hayashi, Kunihiko Kurisu