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Naoki Hagiwara

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  • Tsuchiura-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Work machine
    • Patent number 12,188,204
    • Issue date Jan 7, 2025
    • Hitachi Construction Machinery Co., Ltd.
    • Naoki Hagiwara
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Work machine
    • Patent number 12,037,775
    • Issue date Jul 16, 2024
    • Hitachi Construction Machinery Co., Ltd.
    • Naoki Hagiwara
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Hydraulic excavator
    • Patent number 12,000,115
    • Issue date Jun 4, 2024
    • Hitachi Construction Machinery Co., Ltd.
    • Saito Katayama
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Work machine and periphery monitoring system
    • Patent number 11,885,108
    • Issue date Jan 30, 2024
    • Hitachi Construction Machinery Co., Ltd.
    • Keiichirou Anahara
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Hydraulic excavator
    • Patent number 11,739,503
    • Issue date Aug 29, 2023
    • Hitachi Construction Machinery Co., Ltd.
    • Naoki Hagiwara
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Locking system for a work machine
    • Patent number 11,041,290
    • Issue date Jun 22, 2021
    • Hitachi Construction Machinery Co., Ltd.
    • Katsuaki Kodaka
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Hydraulic drive device for hydraulic excavator
    • Patent number 8,919,115
    • Issue date Dec 30, 2014
    • Hitachi Construction Machinery Co., Ltd.
    • Naoki Hagiwara
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Hydraulic drive device for hydraulic working machine
    • Patent number 8,650,778
    • Issue date Feb 18, 2014
    • Hitachi Construction Machinery Co., Ltd.
    • Yasuo Okano
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Hydraulic drive apparatus for construction equipment
    • Patent number 8,589,038
    • Issue date Nov 19, 2013
    • Hitachi Construction Machinery Co., Ltd.
    • Naoki Hagiwara
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Hydraulic driving device for work machine
    • Patent number 8,516,805
    • Issue date Aug 27, 2013
    • Hitachi Construction Machinery Co., Ltd.
    • Naoki Hagiwara
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL

Patents Applicationslast 30 patents

  • Information Patent Application

    CONSTRUCTION MACHINE
    • Publication number 20220341129
    • Publication date Oct 27, 2022
    • Hitachi Construction Machinery Co., Ltd.
    • Keiichirou ANAHARA
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    WORK MACHINE
    • Publication number 20220333345
    • Publication date Oct 20, 2022
    • Hitachi Construction Machinery Co., Ltd.
    • Naoki HAGIWARA
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    WORK MACHINE AND PERIPHERY MONITORING SYSTEM
    • Publication number 20220290411
    • Publication date Sep 15, 2022
    • Hitachi Construction Machinery Co., Ltd.
    • Keiichirou ANAHARA
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    WORK MACHINE
    • Publication number 20220170244
    • Publication date Jun 2, 2022
    • Hitachi Construction Machinery Co., Ltd.
    • Naoki HAGIWARA
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    HYDRAULIC EXCAVATOR
    • Publication number 20220042285
    • Publication date Feb 10, 2022
    • Hitachi Construction Machinery Co., Ltd.
    • Saito KATAYAMA
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    HYDRAULIC EXCAVATOR
    • Publication number 20210310218
    • Publication date Oct 7, 2021
    • Hitachi Construction Machinery Co., Ltd.
    • Naoki HAGIWARA
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Work Machine
    • Publication number 20210079624
    • Publication date Mar 18, 2021
    • Hitachi Construction Machinery Co., Ltd.
    • Katsuaki KODAKA
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Hydraulic Drive Device for Hydraulic Working Machine
    • Publication number 20120163949
    • Publication date Jun 28, 2012
    • Hitachi Construction Machinery Co., Ltd.
    • Yasuo Okano
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Hydraulic Driving Device for Work Machine
    • Publication number 20120000191
    • Publication date Jan 5, 2012
    • HITACHI CONSTRUCTION MACHINERY CO., LTD.
    • Naoki Hagiwara
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    Hydraulic Drive Apparatus for Construction Equipment
    • Publication number 20120003069
    • Publication date Jan 5, 2012
    • Naoki Hagiwara
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Hydraulic Drive Device for Hydraulic Excavator
    • Publication number 20110192155
    • Publication date Aug 11, 2011
    • Hitachi Construction Machinery Co., Ltd.
    • Naoki HAGIWARA
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING