Patents by Inventor Tetsuyuki Manaka

Tetsuyuki Manaka 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).

  • Microphone holding device
    Patent number: 4423293
    Abstract: A microphone holding device which holds a microphone in a casing so that the microphone is disposed substantially perpendicularly to the surface of a concave of a helmet, etc. for receiving the microphone in it. Thus, both the sound collecting portion and the opposed end of the microphone are kept freely communicated with the outside of the casing.
    Type: Grant
    Filed: June 12, 1981
    Date of Patent: December 27, 1983
    Assignee: Clarion Co., Ltd.
    Inventors: Masato Murayama, Tetsuyuki Manaka
  • 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