TREA

Haruo Watanabe

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  • Hitachi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hydraulic elevator and a control method thereof
    • Patent number 5,285,027
    • Issue date Feb 8, 1994
    • Hitachi, Ltd.
    • Ichiro Nakamura
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    Elevator with means for controlling upward and downward movement of...
    • Patent number 5,265,701
    • Issue date Nov 30, 1993
    • Hitachi, Ltd.
    • Tsuyoshi Ogasawara
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    Fuel injection valve
    • Patent number 5,108,037
    • Issue date Apr 28, 1992
    • Hitachi Ltd.
    • Yoshio Okamoto
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Electromagnetic fuel injection valve
    • Patent number 5,098,016
    • Issue date Mar 24, 1992
    • Hitachi, Ltd.
    • Yoshio Okamoto
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Electromagnetic fuel injection valve apparatus
    • Patent number 5,018,501
    • Issue date May 28, 1991
    • Hitachi, Ltd.
    • Haruo Watanabe
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Electromagnetic fuel injection valve
    • Patent number 4,995,559
    • Issue date Feb 26, 1991
    • Hitachi, Ltd.
    • Yoshio Okamoto
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Electromagnetic fuel injection valve
    • Patent number 4,887,769
    • Issue date Dec 19, 1989
    • Hitachi, Ltd.
    • Yoshio Okamoto
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Direct-acting servo valve
    • Patent number 4,544,129
    • Issue date Oct 1, 1985
    • Hitachi, Ltd.
    • Ken Ichiryu
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Servo pump for hydraulic systems
    • Patent number 4,529,362
    • Issue date Jul 16, 1985
    • Hitachi, Ltd.
    • Ken Ichiryu
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Servovalve apparatus
    • Patent number 4,464,978
    • Issue date Aug 14, 1984
    • Hitachi, Ltd.
    • Ken Ichiryu
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Direct drive type servo valve
    • Patent number 4,428,559
    • Issue date Jan 31, 1984
    • Hitachi, Ltd.
    • Ken Ichiryu
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Hydraulic operating apparatus
    • Patent number 4,404,892
    • Issue date Sep 20, 1983
    • Hitachi, Ltd.
    • Ichiro Nakamura
    • H01 - BASIC ELECTRIC ELEMENTS