Patents by Inventor Eizo Otsuka

Eizo Otsuka 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).

  • Piezoelectric resonator support with direction-oriented conductive plastic plate
    Patent number: 4322652
    Abstract: A piezoelectric filter comprises a piezoelectric substrate having separate first and second electrode layers formed on one surface thereof and a common electrode layer formed on the opposite surface thereof, first and second terminal members, and a common terminal member electrically connected to the common electrode layer. The first and second terminal members are electrically connected to the first and second electrode layers through different local areas of a direction-oriented electroconductive plastic sheet capable of exhibiting its electroconductivity in a predetermined direction across the thickness thereof. An ordinary electroconductive rubber sheet may be positioned between the common terminal member and the common electrode layer.
    Type: Grant
    Filed: May 23, 1979
    Date of Patent: March 30, 1982
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Eizo Otsuka