Patents by Inventor Tatuji Niwata

Tatuji Niwata 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).

  • Fee-charging apparatus for television sets
    Patent number: 4085422
    Abstract: An apparatus with specified video carrier jamming for disturbing the image on a screen of a TV receiver for Fee-charged Viewing Thereof comprises an oscillating circuit, a switch means, a feeding device and a mixer circuit, and the said mixer circuit combines a video carrier with the output of said oscillating circuit.
    Type: Grant
    Filed: June 30, 1976
    Date of Patent: April 18, 1978
    Assignee: Hokuryo Denko Co., Ltd.
    Inventors: Tatuji Niwata, Kazutomo Okubo, Fumio Nakanishi, Masanori Yamada