Patents by Inventor Yozo Koyama

Yozo 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).

  • Action for keyboard-based musical instrument
    Patent number: 6740801
    Abstract: An action for a keyboard-based musical instrument is provided for preventing action parts made of a synthetic resin from being charged to eliminate stains due to dust and motes in the air attracted by static electricity. The action is composed of a plurality of action parts coupled to one another, including a hammer. The action actuates in response to depression on a key to swing the hammer which strikes a string. At least one of the plurality of action parts is made of a synthetic resin which has electrical conductivity at least on a surface thereof.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: May 25, 2004
    Assignee: Kabushiki Kaisha Kawai Gakki Seisakusho
    Inventors: Kenji Yoshisue, Yozo Koyama
  • Action for keyboard-based musical instrument
    Publication number: 20020189422
    Abstract: An action for a keyboard-based musical instrument is provided for preventing action parts made of a synthetic resin from being charged to eliminate stains due to dust and motes in the air attracted by static electricity. The action is composed of a plurality of action parts coupled to one another, including a hammer. The action actuates in response to depression on a key to swing the hammer which strikes a string. At least one of the plurality of action parts is made of a synthetic resin which has electrical conductivity at least on a surface thereof.
    Type: Application
    Filed: June 5, 2002
    Publication date: December 19, 2002
    Applicant: Kabushiki Kaisha Kawai Gakki Seisakusho
    Inventors: Kenji Yoshisue, Yozo Koyama