Patents by Inventor Toshiaki Hazama

Toshiaki Hazama 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
    Patent number: D669116
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: October 16, 2012
    Assignee: Roland Corporation
    Inventors: Akihiko Fukuoka, Toshiaki Hazama
  • Tuner for musical instruments
    Patent number: D742959
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: November 10, 2015
    Assignee: ROLAND CORPORATION
    Inventors: Toshiaki Hazama, Tetsuya Uesugi