Patents by Inventor Yutaka Fuwa

Yutaka Fuwa 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 method of protectively controlling electric power system and storage medium storing program code
    Patent number: 6618648
    Abstract: The control system for a plant comprises a rectifier connected to a network. The rectifier has a unit for acquiring precise time, a unit for sampling the state quantity on the precise time to convert the state quantity into digital data and a unit for adding the precise time at each sampling timing to the digital data to transmit the digital data each having the precise time to the network. A breaker is connected to the network. The breaker has a unit for receiving, through the network, a control command thereto and a unit for transmitting an operating state thereof to the network. A control apparatus is connected to the network. The control apparatus has a unit for performing an operation process on the digital data transmitted through the communication network and the operating state of the breaker transmitted therethrough and a unit for transmitting the control command through the communication network to the breaker in response to a result of the control operation process of the performing unit.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: September 9, 2003
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshihiro Shirota, Katsuhiko Sekiguchi, Tetsuya Miyoshi, Yutaka Fuwa, Yoshiyuki Shimokawa, Hideki Sasaki, Masao Hori