Patents by Inventor Yoshihiko Matsukuma

Yoshihiko Matsukuma 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).

  • Mute attached to brass instrument without change of pitch of sound
    Patent number: 5973246
    Abstract: A mute attached to a brass instrument has an inner surface shaped in such a manner that standing waves of representative harmonic tones have respective final nodes therein close to final nodes of the standing waves generated without the mute, and the pitch of the sound is hardly changed between a performance with the mute and a performance without a mute.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: October 26, 1999
    Assignee: Yamaha Corporation
    Inventors: Shinji Hamanaga, Yoshihiko Matsukuma
  • Mute attached to brass instrument without change of pitch of sound
    Patent number: 5569864
    Abstract: A mute attached to a brass instrument has an inner surface shaped in such a manner that standing waves of representative harmonic tones have respective final nodes therein close to final nodes of the standing waves generated without the mute, and the pitch of the sound is hardly changed between a performance with the mute and a performance without a mute.
    Type: Grant
    Filed: November 14, 1995
    Date of Patent: October 29, 1996
    Assignee: Yamaha Corporation
    Inventors: Shinji Hamanaga, Yoshihiko Matsukuma