Patents by Inventor Norihisa Katoh

Norihisa Katoh 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).

  • Push-pull output circuit
    Patent number: 4336504
    Abstract: A push-pull output circuit which is capable of producing a relatively-high maximum output voltage without the use of a bootstrap capacitor provides positive and negative half cycle output circuits which are constructed as inverted Darlington output circuits to which current mirror circuits and level shifting elements are coupled. As a result, the distortion factor of an open loop characteristic in the push-pull output circuit is improved.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: June 22, 1982
    Assignees: Hitachi, Ltd., Hitachi Ome Electronic Co., Ltd.
    Inventors: Kunio Seki, Norihisa Katoh