Patents by Inventor Kozo Hisanaga

Kozo Hisanaga 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 musical keyboard
    Patent number: D345575
    Type: Grant
    Filed: December 15, 1992
    Date of Patent: March 29, 1994
    Assignee: Casio Computer Co., Ltd.
    Inventors: Kozo Hisanaga, Yukihiko Ida
  • Electronic musical keyboard
    Patent number: D345755
    Type: Grant
    Filed: November 24, 1992
    Date of Patent: April 5, 1994
    Assignee: Casio Computer Co., Ltd.
    Inventors: Toshio Igo, Yukihiko Ida, Kozo Hisanaga