TREA

Sei Shimahara

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hydraulic circuit for a construction machine
    • Patent number 11,781,287
    • Issue date Oct 10, 2023
    • Caterpillar SARL
    • Isao Konishi
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Work machine
    • Patent number 9,309,649
    • Issue date Apr 12, 2016
    • Caterpillar SARL
    • Hiroyasu Nishikawa
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Hydraulic circuit control device and work machine
    • Patent number 9,103,095
    • Issue date Aug 11, 2015
    • Caterpillar SARL
    • Hiroyasu Nishikawa
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Hydraulic control apparatus for work machine
    • Patent number 8,899,035
    • Issue date Dec 2, 2014
    • Caterpillar SARL
    • Hiroyasu Nishikawa
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Fluid pressure circuit
    • Patent number 7,958,907
    • Issue date Jun 14, 2011
    • Caterpillar SARL
    • Hiroyasu Nishikawa
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Control unit for work machine
    • Patent number 7,930,970
    • Issue date Apr 26, 2011
    • Caterpillar SARL
    • Hiroyasu Nishikawa
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Valve control unit
    • Patent number 7,926,411
    • Issue date Apr 19, 2011
    • Caterpillar SARL
    • Hiroyasu Nishikawa
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL

Patents Applicationslast 30 patents

  • Information Patent Application

    DRIVE CONTROL DEVICE FOR FLUID PRESSURE CYLINDER
    • Publication number 20240301659
    • Publication date Sep 12, 2024
    • CATERPILLAR S.A.R.L.
    • Isao KONISHI
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Hydraulic Circuit for a Construction Machine
    • Publication number 20230131384
    • Publication date Apr 27, 2023
    • CATERPILLAR S.A.R.L.
    • Isao Konishi
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    HYDRAULIC CIRCUIT CONTROL DEVICE AND WORK MACHINE
    • Publication number 20120260646
    • Publication date Oct 18, 2012
    • CATERPILLAR S.A.R.L.
    • Hiroyasu Nishikawa
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    HYDRAULIC CONTROL APPARATUS FOR WORK MACHINE
    • Publication number 20120036845
    • Publication date Feb 16, 2012
    • Hiroyasu Nishikawa
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    WORK MACHINE
    • Publication number 20110315415
    • Publication date Dec 29, 2011
    • CATERPILLAR JAPAN LTD.
    • Hiroyasu Nishikawa
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    FLUID PRESSURE CIRCUIT
    • Publication number 20090159143
    • Publication date Jun 25, 2009
    • SHIN CATERPILLAR MITSUBISHI LTD.
    • Hiroyasu Nishikawa
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    VALVE CONTROL UNIT
    • Publication number 20090114298
    • Publication date May 7, 2009
    • SHIN CATERPILLAR MITSUBISHI LTD.
    • Hiroyasu Nishikawa
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    CONTROL UNIT FOR WORK MACHINE
    • Publication number 20090090237
    • Publication date Apr 9, 2009
    • Shin Caterpillar Mitsubishi Co., Ltd.
    • Hiroyasu Nishikawa
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING