Patents by Inventor Megumu Mitani

Megumu Mitani 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).

  • Input setting method for digital operational devices
    Patent number: 4347581
    Abstract: An input setting method for a protective relaying apparatus including an input setting switch for setting data, a digital operational device for carrying out a relaying operation utilizing the data, and a memory device for storing the data, the method comprising the steps of setting the data by the input setting switch, storing the data thus set in the memory device, comparing the set data with the stored data, carrying out the relaying operation utilizing the data when the compared data are found equal, and issuing an alarm signal when the compared data are found to be unequal.
    Type: Grant
    Filed: September 24, 1979
    Date of Patent: August 31, 1982
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Mitsuru Yamaura, Ryotaro Kondow, Megumu Mitani, Yoshiji Nii
  • Digital protective relaying devices
    Patent number: 4339802
    Abstract: In a digital protective relaying device utilizing a microcomputer for protecting an electric power transmission system, a setting switch is provided for writing the values into the computer after the relaying operation of the protective device is locked by a locking means. The protective values thus set in the computer is indicated on an indicating device under the control of the computer and visually checked by an operator, while the computer always confirming the coincidence of the set values with the indicated values.
    Type: Grant
    Filed: August 10, 1979
    Date of Patent: July 13, 1982
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Mitsuru Yamaura, Ryotaro Kondow, Megumu Mitani, Eiichi Okamoto