Patents by Inventor Nobuo Kunimi

Nobuo Kunimi 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).

  • Patent number: 4538114
    Abstract: A differential amplifier formed of MISFETs includes a differential amplification stage and a pair of cascade amplification stages which receive outputs from the differential amplification stage. In each of the cascade amplification stages, an amplifying MISFET which receives an input signal at its source has a channel conductivity of opposite type to that of the differential input MISFETs of the differential amplification stage. The differential amplifier with this construction has good frequency characteristics. Since the pair of cascade amplification stages make the currents taken from a pair of outputs from the differential amplification stage equal to each other, the operating balance of the differential amplification stage is not affected.
    Type: Grant
    Filed: September 1, 1983
    Date of Patent: August 27, 1985
    Assignee: Hitachi, Ltd.
    Inventors: Nobuo Kunimi, Koichi Shimizu, Toshiro Suzuki