Patents by Inventor Masaaki Takahasi

Masaaki Takahasi 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).

  • Celesta promptly responsive to high speed keying-in
    Patent number: 5235892
    Abstract: A celesta produces sounds in response to keying-in by striking sound bars with hammer units associated therewith, and key action mechanisms are provided between the keys and the hammer units, wherein the hammer units are located under the associated sound bars so that the hammers promptly return to initial positions by the aid of the gravity exerted thereon.
    Type: Grant
    Filed: December 3, 1991
    Date of Patent: August 17, 1993
    Assignee: Yamaha Corporation
    Inventors: Norishige Terada, Masaaki Takahasi, Hiroaki Ohmuro, Yasuyuki Semba