Patents by Inventor Isao Furo

Isao Furo 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).

  • Thyristor converter system with higher harmonics suppression
    Patent number: 5347441
    Abstract: A semi-conductor bridge thyrister converter circuit for converting AC power into DC power with suppression of the higher harmonics generated by the circuit including a semi-conductor converter circuit, a control circuit, and instrument transformers for measuring the voltages and the currents at the source and the load side at a node. On the basis of the outputs of these transformers, the control circuit controls the control delay angle and the overlap angle of the thyristers of the semi-conductor converter circuit such that higher harmonics generated by the converter current are reduced to a minimum as seen from the power system side.
    Type: Grant
    Filed: September 22, 1992
    Date of Patent: September 13, 1994
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Makoto Terada, Isao Furo, Hiroshi Suzuki, Isao Iyoda
  • Automatic control system for controlling the output power of a power plant
    Patent number: 4746807
    Abstract: An automatic control system for a power plant including a torque such as a steam turbine and a generator for converting the generated torque into electrical output.
    Type: Grant
    Filed: January 28, 1987
    Date of Patent: May 24, 1988
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Isao Furo, Suketsugu Kabayama