Patents by Inventor Yohichi Goto

Yohichi Goto 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 converting apparatus
    Patent number: 5933341
    Abstract: A power converting apparatus is comprised of an inverter unit arranged by a switching semiconductor element 51a for an upper arm and another switching semiconductor element 51d for a lower arm, and for turning ON/OFF the switching semiconductor elements to thereby convert DC power inputted from a DC power supply into AC power; and control means 10a for judging as to whether or not an abnormal operation is present based upon an output of a comparator 11a for judging as to whether or not a detection voltage detected by a voltage detecting circuit 61 is substantially equal to a voltage of the positive polarity; an output of a comparator 11b for judging as to whether or not a detection voltage detected by the voltage detecting circuit 61 is substantially equal to a voltage of the negative polarity; and an output signal of an igniting signal for ON/OFF-controlling the switching semiconductor elements, this voltage detecting circuit 61 detecting an output voltage of the inverter unit via a voltage dividing resistor
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: August 3, 1999
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shigemi Kuriyama, Taro Ando, Katsushi Ikeda, Yohichi Goto, Masakatu Daijyo, Akinori Nishihiro