TREA

Yukiaki Nagao

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  • Toyama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hydraulic drive system
    • Patent number 6,584,770
    • Issue date Jul 1, 2003
    • Hitachi Construction Machinery Co., Ltd.
    • Yasutaka Tsuruga
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Hydraulic driving device
    • Patent number 6,526,747
    • Issue date Mar 4, 2003
    • Hitachi Construction Machinery Co., Ltd.
    • Kenichiro Nakatani
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Hydraulic drive device
    • Patent number 6,408,622
    • Issue date Jun 25, 2002
    • Hitachi Construction Machinery Co., Ltd.
    • Yasutaka Tsuruga
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Hydraulic driving unit
    • Patent number 6,397,591
    • Issue date Jun 4, 2002
    • Hitachi Construction Machinery Co., Ltd.
    • Yasutaka Tsuruga
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Patents Applicationslast 30 patents

  • Information Patent Application

    Hydraulic drive system
    • Publication number 20020157389
    • Publication date Oct 31, 2002
    • Yasutaka Tsuruga
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Hydraulic driving device
    • Publication number 20020134227
    • Publication date Sep 26, 2002
    • Kenichiro Nakatani
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING