Patents by Inventor Fumiyoshi Ubusawa

Fumiyoshi Ubusawa 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).

  • Transceiver having interphone system
    Patent number: 4392243
    Abstract: A transceiver having an interphone system which is comprised of two transmitter and receiver units, a transceiver, an interphone and switching means for selectively connecting the transmitting and receiving units to the transceiver or the interphone.
    Type: Grant
    Filed: April 9, 1981
    Date of Patent: July 5, 1983
    Assignee: Clarion Co., Ltd.
    Inventors: Shiro Ohhashi, Fumiyoshi Ubusawa, Shoji Iwasaki, Tetsuyuki Manaka