Patents by Inventor Yoshiichi Katoh

Yoshiichi 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).

  • Patent number: 4651037
    Abstract: An insulated-gate type field-effect transistor (MOST) analog switching circuit which has improved capacitance compensation to provide high speed, low transient noise operation and which is readily implemented as an integrated circuit comprises a switching MOST coupled between an analog signal input terminal and an output terminal, and two series connected compensation MOSTs which are substantially the same size as the switching MOST. The compensation MOSTs are connected so as to function as compensation capacitors and the series circuit is connected between the output terminal of the switching circuit and a source of pulses of opposite phase to the switching pulses applied to the gate of the switching MOST. The compensation MOSTs can be interconnected in different ways to form the series circuit, but gate-to-gate interconnection is preferred where the junction capacitance between the source-drain and substrate is not negligible with respect to the gate capacitance.
    Type: Grant
    Filed: June 7, 1983
    Date of Patent: March 17, 1987
    Assignee: NEC Corporation
    Inventors: Kazuo Ogasawara, Yoshiichi Katoh, Hideo Takahashi