Patents by Inventor Masatoshi Okubo

Masatoshi Okubo 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 system stabilization system and method employing a rechargeable battery system
    Patent number: 6563234
    Abstract: A power system stabilization system is provided between power generation equipment significantly fluctuating in output and a power system required to maintain a predetermined voltage. In the power system stabilization system, a voltage detection device and a current detection device detect voltage and current, respectively, of the power system and voltage and current thus detected are used to calculate a level of active power required and that of reactive power required which are referred to to provide charging and discharging from a rechargeable battery to the power system via an A-D converter.
    Type: Grant
    Filed: February 1, 2001
    Date of Patent: May 13, 2003
    Assignees: Sumitomo Electric Industries, Ltd., Kansai Electric Power Co., Inc.
    Inventors: Yoshihiro Hasegawa, Masatoshi Okubo, Tetsuo Sasaki
  • Power system stabilization system and method employing a rechargeable battery system
    Publication number: 20010012211
    Abstract: A power system stabilization system is provided between power generation equipment significantly fluctuating in output and a power system required to maintain a predetermined voltage. In the power system stabilization system, a voltage detection device and a current detection device detect voltage and current, respectively, of the power system and voltage and current thus detected are used to calculate a level of active power required and that of reactive power required which are referred to to provide charging and discharging from a rechargeable battery to the power system via an A-D converter.
    Type: Application
    Filed: February 1, 2001
    Publication date: August 9, 2001
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Yoshihiro Hasegawa, Masatoshi Okubo, Tetsuo Sasaki