Patents by Inventor Kunihiko Karube

Kunihiko Karube 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).

  • Inverter unit and inverter apparatus
    Patent number: 5671134
    Abstract: An inverter unit of the invention converts a DC current to a high frequency AC current. The inverter unit is formed of a metal conductor base plate connected to a positive terminal of a DC power supply; and switching elements arranged on both surfaces of the base plate. Each switching element situated on each surface of the base plate includes an upper arm and a lower arm of the inverter unit to form an arm pair. The arm pairs formed on both surfaces of the base plate constitute a single phase bridge circuit.
    Type: Grant
    Filed: September 5, 1995
    Date of Patent: September 23, 1997
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Toshihiro Nomura, Kunihiko Karube, Masaaki Hisamoto, Koji Awatani