Patents by Inventor Koshiaki Ishihara

Koshiaki Ishihara 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).

  • Multi-output power conversion circuit
    Patent number: 6836416
    Abstract: In a multi-output power conversion circuit which drives a polyphase AC motor and another device but the polyphase AC motor using a DC power source, a transformer is connected to the neutral point of the polyphase AC motor, an AC voltage at a zero-phase voltage frequency is obtained from the transformer, and the other device is loaded with the AC voltage.
    Type: Grant
    Filed: March 6, 2002
    Date of Patent: December 28, 2004
    Assignee: Kabushiki Kaishi Toyota Jidoshokki
    Inventors: Koshiaki Ishihara, Seiki Sakata, Yasuharu Odachi