Patents by Inventor Mutsuo Musha

Mutsuo Musha 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).

  • Whole surface driven speaker
    Patent number: 5003610
    Abstract: A whole surface driven speaker includes a diaphragm of an insulating plastic sheet carrying a conductor coil pattern. A foamed mica plate is bonded to the diaphragm. Two groups of permanent magnets are arranged on both sides of the diaphragm and oppose each other with pole faces of the same polarity across the diaphragm but with poles faces of opposite polarity adjoining each other on each side of the diaphragm.
    Type: Grant
    Filed: September 28, 1988
    Date of Patent: March 26, 1991
    Assignee: Fostex Corporation
    Inventors: Atsushi Adachi, Mutsuo Musha