Patents by Inventor Kiyotaka Kasahara

Kiyotaka Kasahara 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).

  • SEMICONDUCTOR APPARATUS
    Publication number: 20200312968
    Abstract: Planar transistors are integrated on a semiconductor apparatus. Each planar transistor includes a source electrode, a gate electrode, a drain electrode, and a field plate. The source electrode and the field plate are coupled on the outside of an active region of the planar transistor.
    Type: Application
    Filed: January 14, 2020
    Publication date: October 1, 2020
    Inventors: Kiyotaka KASAHARA, Kensuke OKUMURA, Tomoo YAMANOUCHI
  • Control device using GaN semiconductor
    Patent number: 10469040
    Abstract: A control device includes: a differential amplification circuit that amplifies a difference with respect to an input signal; and a clipping circuit that is connected to an output side of the differential amplification circuit and clips an input voltage. The differential amplification circuit includes a plurality of switching elements formed of a GaN semiconductor, and the clipping circuit includes a switching element formed of the GaN semiconductor.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: November 5, 2019
    Assignee: ADVANTEST Corporation
    Inventor: Kiyotaka Kasahara
  • CONTROL DEVICE USING GAN SEMICONDUCTOR
    Publication number: 20180183393
    Abstract: A control device includes: a differential amplification circuit that amplifies a difference with respect to an input signal; and a clipping circuit that is connected to an output side of the differential amplification circuit and clips an input voltage. The differential amplification circuit includes a plurality of switching elements formed of a GaN semiconductor, and the clipping circuit includes a switching element formed of the GaN semiconductor.
    Type: Application
    Filed: October 27, 2017
    Publication date: June 28, 2018
    Applicant: ADVANTEST Corporation
    Inventor: Kiyotaka Kasahara