Patents by Inventor Shinji Tanifuji

Shinji Tanifuji 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).

  • Control system for power transmission and distribution system
    Patent number: 5760492
    Abstract: In a control system for a power transmission and distribution system, a plurality of distributed power supplying and receiving units each including a control unit are provided and connected along a power distribution line. The power supplying and receiving unit function to generate active and reactive powers of fundamental and higher harmonic waves to supply and receive the same to and from the power distribution line. A first central control unit controls the power distribution line and is designed to store information relating to the configuration of the power distribution line, to collect information with regard to instant open and close conditions of respective disconnecting switches connected for sectioning the power distribution line, and with regard to current electrical quantities on the power distribution line.
    Type: Grant
    Filed: January 1, 1996
    Date of Patent: June 2, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Minoru Kanoi, Yuzuru Imamura, Saburo Yasukawa, Masahiko Amano, Shinji Tanifuji, Toshifumi Yoshikawa, Masahiro Watanabe