Patents by Inventor So NAKAMICHI

So NAKAMICHI 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 converter and power converter for railroad vehicle
    Patent number: 10453770
    Abstract: In each of a plurality of semiconductor element groups of a power converter, a second semiconductor switching element and a third semiconductor switching element are shifted from each other in a second direction such that at least a portion of fins with which the second semiconductor switching element overlaps as viewed in a direction orthogonal to surfaces of coolers is different from fins with which the third semiconductor switching element overlaps as viewed in the direction orthogonal to the surfaces of the coolers.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: October 22, 2019
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Masamitsu Takizawa, Nobuyuki Kobayashi, Yoshio Mori, So Nakamichi, Kohei Matsui
  • POWER CONVERTER AND POWER CONVERTER FOR RAILROAD VEHICLE
    Publication number: 20190148259
    Abstract: In each of a plurality of semiconductor element groups of a power converter, a second semiconductor switching element and a third semiconductor switching element are shifted from each other in a second direction such that at least a portion of fins with which the second semiconductor switching element overlaps as viewed in a direction orthogonal to surfaces of coolers is different from fins with which the third semiconductor switching element overlaps as viewed in the direction orthogonal to the surfaces of the coolers.
    Type: Application
    Filed: October 25, 2018
    Publication date: May 16, 2019
    Inventors: Masamitsu TAKIZAWA, Nobuyuki KOBAYASHI, Yoshio MORI, So NAKAMICHI, Kohei MATSUI