Patents by Inventor Yasuo Yamawaki

Yasuo Yamawaki 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).

  • Electronic keyboard musical instrument
    Patent number: D312651
    Type: Grant
    Filed: June 13, 1988
    Date of Patent: December 4, 1990
    Assignee: Yamaha Corporation
    Inventor: Yasuo Yamawaki
  • Electronic keyboard musical instrument
    Patent number: D313031
    Type: Grant
    Filed: June 13, 1988
    Date of Patent: December 18, 1990
    Assignee: Yamaha Corporation
    Inventor: Yasuo Yamawaki
  • Electronic keyboard musical instrument
    Patent number: D314204
    Type: Grant
    Filed: July 20, 1988
    Date of Patent: January 29, 1991
    Assignee: Yamaha Corporation
    Inventor: Yasuo Yamawaki
  • Electronic piano
    Patent number: D320404
    Type: Grant
    Filed: November 15, 1988
    Date of Patent: October 1, 1991
    Assignee: Yamaha Corporation
    Inventors: Yasuo Yamawaki, Kazuyuki Mizushima
  • Electronic piano
    Patent number: D322086
    Type: Grant
    Filed: November 15, 1988
    Date of Patent: December 3, 1991
    Assignee: Yamaha Corporation
    Inventors: Yasuo Yamawaki, Kazuyuki Mizushima
  • Electronic key board musical instrument
    Patent number: D322268
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: December 10, 1991
    Assignee: Yamaha Corporation
    Inventor: Yasuo Yamawaki
  • Electronic keyboard musical instrument
    Patent number: D322269
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: December 10, 1991
    Assignee: Yamaha Corporation
    Inventor: Yasuo Yamawaki