Patents by Inventor Hidesato Horii

Hidesato Horii 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).

  • Power semiconductor device including an arrangement for controlling load current by independent control of a plurality of semiconductor elements
    Patent number: 4977333
    Abstract: Semiconductor components electrically connected in parallel are divided into a plurality of groups, with the control terminals of the semiconductor components constituting each group being connected in common to form a control terminal of the group, wherein the control terminals of the groups are mutually independent. A load current is limited by allowing specified ones of said semiconductor components to become conductive. Control of the load current is made possible without accompanying wasteful power dissipation.
    Type: Grant
    Filed: April 12, 1989
    Date of Patent: December 11, 1990
    Assignees: Hitachi, Ltd., Hitachi Automotive Engineering, Ltd.
    Inventors: Masayoshi Suzuki, Hidesato Horii