Patents by Inventor Zirou Terasima

Zirou Terasima 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).

  • High current Darlington amplifier
    Patent number: 4866401
    Abstract: The invention teaches the placement of a plurality of conducting paths in the vicinity of the base of the final stage of a Darlington configured transistor group. When an abrupt change in carrier density occurs, such as during switching intervals, the added conduction paths facilitate the removal of carriers from the base region, thereby facilitating the turn-off process. The extra conductive paths allow a more even current density within the volume of the base during changes in carrier density.
    Type: Grant
    Filed: November 30, 1988
    Date of Patent: September 12, 1989
    Assignee: Fuji Electric Co., Ltd.
    Inventor: Zirou Terasima