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Ken Ichiryu

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  • Chiyoda-machi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Guide roller assembly for crawler type vehicles and method for form...
    • Patent number 6,074,023
    • Issue date Jun 13, 2000
    • Hitachi Construction Machinery Co., Ltd.
    • Fujio Satou
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Seal structure for member-passing-through hole bored in metal parti...
    • Patent number 5,861,577
    • Issue date Jan 19, 1999
    • Hitachi Construction Machinery Co., Ltd.
    • Morio Tamura
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Method of gas sulphonitriding
    • Patent number 5,290,369
    • Issue date Mar 1, 1994
    • Hitachi Construction Machinery Co., Ltd.
    • Kazuyoshi Hatano
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Sliding member, and method and apparatus for producing the same by...
    • Patent number 5,187,017
    • Issue date Feb 16, 1993
    • Hitachi Construction Machinery Co., Ltd.
    • Kazuyoshi Hatano
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Pressure sensor
    • Patent number 5,144,843
    • Issue date Sep 8, 1992
    • Hitachi Construction Machinery Co., Ltd.
    • Morio Tamura
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Solenoid operated valve apparatus
    • Patent number 4,919,390
    • Issue date Apr 24, 1990
    • Hitachi Construction Machinery Co., Ltd.
    • Ken Ichiryu
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Hydraulic elevator
    • Patent number RE33171
    • Issue date Feb 27, 1990
    • Hitachi, Ltd.
    • Tsuyoshi Ogasawara
    • 187 - Elevator, industrial lift truck, or stationary lift for vehicle
  • Information Patent Grant

    Flow control valve apparatus
    • Patent number 4,813,447
    • Issue date Mar 21, 1989
    • Hitachi Construction Machinery Co., Ltd.
    • Ken Ichiryu
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    Thrust hydrostatic bearing device for use in axial piston machine
    • Patent number 4,788,902
    • Issue date Dec 6, 1988
    • Hitachi Ltd.
    • Yoshimichi Akasaka
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Rotary valve
    • Patent number 4,735,233
    • Issue date Apr 5, 1988
    • Hitachi, Ltd.
    • Tadahiko Nogami
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • 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

    Hydraulic elevator
    • Patent number 4,534,452
    • Issue date Aug 13, 1985
    • Hitachi, Ltd.
    • Tsuyoshi Ogasawara
    • B66 - HOISTING LIFTING HAULING
  • 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

    Fluid leakage detecting apparatus
    • Patent number 4,529,974
    • Issue date Jul 16, 1985
    • Hitachi, Ltd.
    • Yoshito Tanaka
    • G08 - SIGNALLING
  • Information Patent Grant

    Fluid leakage detecting element
    • Patent number 4,500,865
    • Issue date Feb 19, 1985
    • Hitachi, Ltd.
    • Yoshito Tanaka
    • G01 - MEASURING TESTING
  • 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
  • Information Patent Grant

    Fluid pressure servo valve assembly
    • Patent number 4,215,723
    • Issue date Aug 5, 1980
    • Hitachi, Ltd.
    • Ken Ichiryu
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Fluid pressure drive device
    • Patent number 4,175,589
    • Issue date Nov 27, 1979
    • Hitachi, Ltd.
    • Ichiro Nakamura
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL