Patents by Inventor Kazutomo Okubo

Kazutomo Okubo 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).

  • CATV Pay system
    Patent number: 4486773
    Abstract: A two-way CATV system comprising a central equipment, a plurality of television receiver sets each disposed with a terminal unit and a wired two-way transmission channel provided between the central equipment and each of the terminal units.
    Type: Grant
    Filed: May 24, 1982
    Date of Patent: December 4, 1984
    Assignee: Hokuryo Denko Co., Ltd.
    Inventor: Kazutomo Okubo
  • 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