Patents by Inventor Tadashi Koshiduka

Tadashi Koshiduka 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).

  • Magnetizing inrush current suppression device and method for transformer
    Patent number: 8310106
    Abstract: To suppress the magnetizing inrush current occurring when supplying power of three phases of the transformer are performed simultaneously using three single-phase circuit breakers or a non-phase segregated operation-type circuit breaker, without providing a circuit breaker with a resistor or other equipment. A magnetizing inrush current suppression method for transformer suppresses a magnetizing inrush current occurring at the start of energizing of a three-phase transformer 300, when a three-phase power supply 100 is input to a terminal of each phase by means of a three-phase circuit breaker 200.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: November 13, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tadashi Koshiduka, Minoru Saito, Susumu Nishiwaki, Nobuyuki Takahashi, Koichi Futagami, Yoshimasa Sato, Tsuyoshi Kokumai, Hiroshi Kusuyama
  • MAGNETIZING INRUSH CURRENT SUPPRESSION DEVICE AND METHOD FOR TRANSFORMER
    Publication number: 20100141235
    Abstract: To suppress the magnetizing inrush current occurring when supplying power of three phases of the transformer are performed simultaneously using three single-phase circuit breakers or a non-phase segregated operation-type circuit breaker, without providing a circuit breaker with a resistor or other equipment. A magnetizing inrush current suppression method for transformer suppresses a magnetizing inrush current occurring at the start of energizing of a three-phase transformer 300, when a three-phase power supply 100 is input to a terminal of each phase by means of a three-phase circuit breaker 200.
    Type: Application
    Filed: November 29, 2007
    Publication date: June 10, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tadashi Koshiduka, Minoru Saito, Susumu Nishiwaki, Nobuyuki Takahashi, Koichi Futagami, Yoshimasa Sato, Tsuyoshi Kokumai, Hiroshi Kusuyama