Patents by Inventor Yuk Yokoi

Yuk Yokoi 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 electro-acoustic transducer and manufacturing method of the same
    Patent number: 6960868
    Abstract: A piezoelectric electro-acoustic transducer includes a substantially rectangular piezoelectric diaphragm, a casing having a support unit for supporting four corners of the piezoelectric diaphragm, terminals fixed to the casing such that an internal connection portion of the terminal is exposed in the vicinity of the support unit, a first elastic adhesive for coating between the external periphery of the piezoelectric diaphragm and the internal connection portion of the terminal therewith, a conductive adhesive for coating between electrodes of the piezoelectric diaphragm and the internal connection portion of the terminal via the upper surface of the first elastic adhesive therewith, and a second elastic adhesive for sealing the external periphery of the piezoelectric diaphragm and the internal periphery of the casing, and a cradle provided in the internal periphery of the casing as well as below the piezoelectric diaphragm in the vicinity that is coated with the first elastic adhesive for forming a gap for s
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: November 1, 2005
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Mitsunori Ishimasa, Keiichi Kami, Tetsuo Takeshima, Yuk Yokoi