Patents by Inventor Michio Masui

Michio Masui 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).

  • Electric power system protection and control system and distributed control system
    Patent number: 6285917
    Abstract: An electric power system protection and control system, including, a plurality of protection controllers, each for executing protection and control of an electric power system by inputting a status quantity of the electric power system and for converting the status quantity into digital data, and a display controller connected to each of the protection controllers via a communication network, for displaying and controlling an operation and status of each of the protection controllers for monitoring. The display controller is provided with a program module sending unit for sending out a program module corresponding to contents for display control in the display controller to one of the protection controllers via the communication network, respectively.
    Type: Grant
    Filed: December 3, 1997
    Date of Patent: September 4, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Katsuhiko Sekiguchi, Michio Masui
  • Electric power system protection and control system and distributed control system
    Patent number: 5926089
    Abstract: An electric power system protection and control system including a plurality of protection controllers, each for executing protection and control of an electric power system by inputting a status quantity of the electric power system and for converting the status quantity into digital data, and a display controller connected to each of the protection controllers via a communication network, for displaying and controlling an operation and status of each of the protection controllers for monitoring. Each of the protection controllers includes a core area not directly connected to the communication network for executing the protection and control of the electric power system, and a web area for sending and receiving a program module to and from the display controller and another one of the protection controllers or sending an information in the core area to the program module via the communication network, respectively.
    Type: Grant
    Filed: December 2, 1997
    Date of Patent: July 20, 1999
    Assignee: Kabushikik Kaisha Toshiba
    Inventors: Katsuhiko Sekiguchi, Michio Masui
  • Secondary arc extinction device
    Patent number: 4464696
    Abstract: A secondary arc extinction device in an electric power system including a bus bar; an electric power line connected to the bus bar; protective relaying means connected to the bus bar; a transformer having a primary winding and a secondary winding, one terminal of the primary winding being connected to the electric power line; first reactance means connected between the other terminal of the primary winding of the transformer and ground; second reactance means connected to the secondary winding of the transformer; and means for controlling the reactance of the second reactance means in response to the protective relaying means.
    Type: Grant
    Filed: May 19, 1982
    Date of Patent: August 7, 1984
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Michio Masui, Yasuhiro Ogawa, Kunio Esumi