Patents by Inventor Tetsuyoshi Abiko

Tetsuyoshi Abiko 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).

  • Shortened mast antenna with compensating circuits
    Patent number: 5398036
    Abstract: A shortened mast antenna with a compensating circuit between the antenna and a receiver and used in a state shorter than the resonant state of the antenna. The compensating circuit includes an FM compensating circuit made up with passive elements and compensating FM broadcast signals and an AM compensating circuit equipped with active elements which convert a high impedance into a low impedance so that the AM compensating circuit compensates AM broadcast signals. The attachment part of the antenna, to which the compensating circuit is directly connected, has a stray capacitance of 10 PF or less.
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: March 14, 1995
    Assignee: Harada Kogyo Kabushiki Kaisha
    Inventors: Kazuhiko Nakase, Tetsuyoshi Abiko