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Mitsuhiko Hirota

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Driving system for an induction motor having a circuit for generati...
    • Patent number 5,270,632
    • Issue date Dec 14, 1993
    • Fanuc Ltd.
    • Mitsuhiko Hirota
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Power supply regenerating circuit
    • Patent number 4,928,052
    • Issue date May 22, 1990
    • Fanuc Ltd.
    • Yoshiki Fujioka
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Motor velocity control apparatus
    • Patent number 4,837,491
    • Issue date Jun 6, 1989
    • Fanuc Ltd.
    • Yoshiki Fujioka
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Plural motor changeover control system
    • Patent number 4,641,069
    • Issue date Feb 3, 1987
    • Fanuc Ltd.
    • Yoshiki Fujioka
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    AC motor control system
    • Patent number 4,626,762
    • Issue date Dec 2, 1986
    • Fanuc Ltd.
    • Yoshiki Fujioka
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Position control apparatus
    • Patent number 4,588,937
    • Issue date May 13, 1986
    • Fanuc Ltd.
    • Yoshiki Fujioka
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    AC motor control apparatus
    • Patent number 4,581,569
    • Issue date Apr 8, 1986
    • Fanuc Limited
    • Yoshiki Fujioka
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    AC Motor control method
    • Patent number 4,499,414
    • Issue date Feb 12, 1985
    • Fanuc Ltd.
    • Yoshiki Fujioka
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Driving circuit for DC motor
    • Patent number 4,362,976
    • Issue date Dec 7, 1982
    • Fujitsu Fanuc Limited
    • Yoshiki Fujioka
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Control system for a DC motor
    • Patent number 4,268,782
    • Issue date May 19, 1981
    • Fujitsu Fanuc Limited
    • Shigeki Kawada
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    DC Motor drive system
    • Patent number 4,268,781
    • Issue date May 19, 1981
    • Fujitsu Fanuc Limited
    • Shigeki Kawada
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Spindle control system
    • Patent number 4,207,504
    • Issue date Jun 10, 1980
    • Fujitsu Fanuc Limited
    • Shigeki Kawada
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR