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Hiroshi Kumagai

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Patents Grantslast 30 patents

  • Information Patent Grant

    Construction machine
    • Patent number 12,031,296
    • Issue date Jul 9, 2024
    • Hitachi Construction Machinery Co., Ltd.
    • Hiroaki Fujishima
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Construction machine
    • Patent number 10,487,476
    • Issue date Nov 26, 2019
    • Hitachi Construction Machinery Co., Ltd.
    • Hiroshi Kumagai
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Construction machine
    • Patent number 9,562,344
    • Issue date Feb 7, 2017
    • Hitachi Construction Machinery Co., Ltd.
    • Hiroshi Kumagai
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Cover for construction machine
    • Patent number D678918
    • Issue date Mar 26, 2013
    • Hitachi Construction Machinery Co., Ltd.
    • Shigehisa Hagura
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Construction machine
    • Patent number 8,365,855
    • Issue date Feb 5, 2013
    • Hitachi Construction Machinery Co., Ltd.
    • Tomonori Mamada
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Construction machine
    • Patent number 7,806,214
    • Issue date Oct 5, 2010
    • Hitachi Construction Machinery Co., Ltd.
    • Hiroshi Tsukui
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Patents Applicationslast 30 patents

  • Information Patent Application

    Construction Machine
    • Publication number 20240141615
    • Publication date May 2, 2024
    • Hitachi Construction Machinery Co., Ltd.
    • Hiroshi KUMAGAI
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Construction Machine
    • Publication number 20210381196
    • Publication date Dec 9, 2021
    • Hitachi Construction Machinery Co., Ltd.
    • Hiroaki FUJISHIMA
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Construction Machine
    • Publication number 20180245310
    • Publication date Aug 30, 2018
    • Hitachi Construction Machinery Co., Ltd.
    • Hiroshi KUMAGAI
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Construction Machine
    • Publication number 20160215477
    • Publication date Jul 28, 2016
    • Hitachi Construction Machinery Co., Ltd.
    • Hiroshi KUMAGAI
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Working Machine
    • Publication number 20130223967
    • Publication date Aug 29, 2013
    • HITACHI CONSTRUCTION MACHINERY CO., LTD.
    • Tsuyoshi Shimizu
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Application

    CONSTRUCTION MACHINE
    • Publication number 20100283278
    • Publication date Nov 11, 2010
    • Hitachi Construction Machinery Co., Ltd.
    • Tomonori Mamada
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    CONSTRUCTION MACHINE
    • Publication number 20090101375
    • Publication date Apr 23, 2009
    • Hiroshi Tsukui
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING