Patents by Inventor Keisuke EGUCHI

Keisuke EGUCHI 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).

  • Publication number: 20200083882
    Abstract: First and second switching regions include first and second gate electrodes respectively. Channel currents of the first and second switching regions are controlled according to electric charge amounts supplied by control signals input to the first and second gate electrodes respectively. The second switching region is connected in parallel with the first switching region. A control section outputs a first control signal for turning-on the first switching region to the first gate electrode and a second control signal for turning-on the second switching region to the second gate electrode. The control section stops outputting the second control signal after a first predetermined period elapses from a start of outputting the first and second control signals, and outputs the second control signal after a second predetermined period elapses from a stop of outputting the second control signal.
    Type: Application
    Filed: May 17, 2019
    Publication date: March 12, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Keisuke EGUCHI, Takahiro INOUE, Rei YONEYAMA, Shiori UOTA, Haruhiko MURAKAMI
  • Publication number: 20200083700
    Abstract: A semiconductor module includes a diode bridge circuit, a sensor configured to measure a current value of the diode bridge circuit, a current limiting circuit having an IGBT connected to the diode bridge circuit, and a protection circuit configured to switch ON and OFF the IGBT in accordance with the current value of the diode bridge circuit measured by the sensor.
    Type: Application
    Filed: June 21, 2019
    Publication date: March 12, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Nobuchika AOKI, Rei YONEYAMA, Keisuke EGUCHI, Hiroki HIDAKA
  • Patent number: 10468372
    Abstract: According to the present invention, a semiconductor apparatus includes a semiconductor device, a case surrounding the semiconductor device, a spring terminal including a first connection portion extending to a top surface of the case, and a second connection portion provided on the top surface of the case and a control substrate provided on the second connection portion, wherein the first connection portion is connected to the semiconductor device, the second connection portion includes a first end connected to an end of the first connection portion, and a second end opposite to the first end, the second connection portion being a flat plate and having an elastic force using the first end as a supporting point, the second end contacts the control substrate with an elastic force, and the second connection portion has a constriction structure having a notch formed in a side surface along a longitudinal direction.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: November 5, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Keisuke Eguchi, Yoshitaka Kimura, Akihiko Yamashita
  • Publication number: 20180374817
    Abstract: According to the present invention, a semiconductor apparatus includes a semiconductor device, a case surrounding the semiconductor device, a spring terminal including a first connection portion extending to a top surface of the case, and a second connection portion provided on the top surface of the case and a control substrate provided on the second connection portion, wherein the first connection portion is connected to the semiconductor device, the second connection portion includes a first end connected to an end of the first connection portion, and a second end opposite to the first end, the second connection portion being a flat plate and having an elastic force using the first end as a supporting point, the second end contacts the control substrate with an elastic force, and the second connection portion has a constriction structure having a notch formed in a side surface along a longitudinal direction.
    Type: Application
    Filed: December 29, 2017
    Publication date: December 27, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Keisuke EGUCHI, Yoshitaka KIMURA, Akihiko YAMASHITA