TREA

Minoru Aoki

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  • Ibaraki-ken, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Pressure compensating valves
    • Patent number 6,135,149
    • Issue date Oct 24, 2000
    • Hitachi Construction Machinery Co., Ltd.
    • Yusaku Nozawa
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Directional control valve with flow distribution valves
    • Patent number 5,957,159
    • Issue date Sep 28, 1999
    • Hitachi Construction Machinery Co., Ltd.
    • Kinya Takahashi
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING