Patents by Inventor Hikoichi Kusumoto

Hikoichi Kusumoto 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).

  • Spot killer circuit
    Patent number: 4217525
    Abstract: A spot killer circuit wherein when a power switch is turned off, a transistor interconnected between the first gird of a picture tube and a low voltage supply is driven into the cut-off region so that the first grid voltage may be abruptly raised so as to cause the discharge of the picture tube.
    Type: Grant
    Filed: April 25, 1979
    Date of Patent: August 12, 1980
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kansei Nakamura, Hikoichi Kusumoto, Yoshinobu Yokono