Patents by Inventor Tetsusuke Eishima

Tetsusuke Eishima 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).

  • Carbon granule microphone with molded resin-conductive carbon electrode
    Patent number: 4205206
    Abstract: Disclosed is an electrode for a carbon transmitter which comprises a body of an electrically conductive material, such as metal or a conductive resin, with at least a part of the surface of the body comprising electrically conductive carbon. Such an electrode may be prepared by applying a carbon coating onto the metallic substrate or by molding a molding resin material having particulate conductive carbon dispersed therein. The electrode has stable electrical properties comparable to those of the known gold-plated electrode.
    Type: Grant
    Filed: March 13, 1978
    Date of Patent: May 27, 1980
    Assignees: Iwatsu Electric Co. Ltd., Nippon Telegraph and Telephone Public Corporation
    Inventors: Tetsusuke Eishima, Takehiro Ikariyama, Raizo Jinnouchi, Kunioki Oyagi, Takashi Soda