Patents by Inventor Masaru Koshi

Masaru Koshi 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).

  • Radio direction finder
    Patent number: 4368470
    Abstract: A radio direction finder, which is designed to determine the direction of arrival of a radio wave by causing the rotation of a directional antenna arrangement or a goniometer, to which the output of the directional antenna arrangement is coupled, or rotating the directivity by an electric means and combining the output of the directional antenna arrangement or goniometer and the output of a non-directional antenna. With this system, it is possible to detect and display the bearing of the received radio wave with a higher place counter and precisely track and display the second bearing of the wave with a lower place counter.
    Type: Grant
    Filed: March 20, 1980
    Date of Patent: January 11, 1983
    Assignee: Taiyo Musen Co. Ltd.
    Inventors: Kenzo Mori, Hyo Yasuda, Masaru Koshi