Patents by Inventor Sawada Yasushi

Sawada Yasushi 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).

  • Patent number: 4803763
    Abstract: A laminated piezoelectric transducer, comprising a laminate of a plurality of piezoelectric plates with paste electrodes inserted therebetween and bonding the plates together. Rows of metal extrusions are made by electroless plating onto the paste electrodes on the peripheral outer surface of the laminate. Each row of the metal extrusions is formed onto and electrically connected to alternate paste electrodes so that by electrically connecting each row of the metal extrusions, the laminate of the piezoelectric plates is electrically connected in parallel. This laminated piezoelectric transducer allows the formation of the paste electrodes on the entire or at least substantially the entire main surfaces of the piezoelectric plates, and eliminates the need for the usual metal plate electrodes inserted between the piezoelectric plates.
    Type: Grant
    Filed: August 26, 1987
    Date of Patent: February 14, 1989
    Assignee: Nippon Soken, Inc.
    Inventors: Yasuda Eturo, Matsuoka Hiroshi, Yoshida Hiroyuki, Kotanshi Yoichi, Sawada Yasushi