Patents by Inventor Yumi NAJIMA

Yumi NAJIMA 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).

  • Transformer and power conversion device
    Patent number: 11640871
    Abstract: A transformer includes: a base that is a plate-like member and has a first surface and a second surface, a core attached to the first surface of the base, coils wound around the core, coil terminals attached to the second surface of the base, and a cooling unit that is thermally connected to the core and is to release heat transferred from the core. The coil terminals are disposed on the second surface of the base opposite to the first surface of the base to which the core is attached. The cooling unit is disposed on a side of the core opposite to the base.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: May 2, 2023
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takayuki Kawaguchi, Tomoki Watanabe, Yumi Najima
  • TRANSFORMER AND POWER CONVERSION DEVICE
    Publication number: 20200350116
    Abstract: A transformer includes: a base that is a plate-like member and has a first surface and a second surface, a core attached to the first surface of the base, coils wound around the core, coil terminals attached to the second surface of the base, and a cooling unit that is thermally connected to the core and is to release heat transferred from the core. The coil terminals are disposed on the second surface of the base opposite to the first surface of the base to which the core is attached. The cooling unit is disposed on a side of the core opposite to the base.
    Type: Application
    Filed: November 8, 2017
    Publication date: November 5, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takayuki KAWAGUCHI, Tomoki WATANABE, Yumi NAJIMA