TREA

Hiroshi Chikatsune

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Threaded joint for pipes
    • Patent number 10,443,765
    • Issue date Oct 15, 2019
    • JFE Steel Corporation
    • Takuya Nagahama
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Threaded joint for tube
    • Patent number 10,295,091
    • Issue date May 21, 2019
    • JFE Steel Corporation
    • Masaki Yoshikawa
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Threaded joint for oil country tubular goods
    • Patent number 10,125,554
    • Issue date Nov 13, 2018
    • JFE Steel Corporation
    • Takamasa Kawai
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Threaded joint for oil country tubular goods
    • Patent number 9,982,491
    • Issue date May 29, 2018
    • JFE Steel Corporation
    • Takamasa Kawai
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Threaded joint for oil country tubular goods
    • Patent number 9,982,815
    • Issue date May 29, 2018
    • JFE Steel Corporation
    • Takamasa Kawai
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Threaded joint for heavy-walled oil country tubular goods
    • Patent number 9,709,196
    • Issue date Jul 18, 2017
    • JFE Steel Corporation
    • Takamasa Kawai
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Threaded joint for pipes
    • Patent number 9,657,873
    • Issue date May 23, 2017
    • JFE Steel Corporation
    • Takamasa Kawai
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Threaded joint for pipes
    • Patent number 9,470,345
    • Issue date Oct 18, 2016
    • JFE Steel Corporation
    • Masaki Yoshikawa
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Threaded joint for steel pipes
    • Patent number 8,991,875
    • Issue date Mar 31, 2015
    • JFE Steel Corporation
    • Masaki Yoshikawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    THREADED JOINT FOR TUBE
    • Publication number 20160334033
    • Publication date Nov 17, 2016
    • JFE STEEL CORPORATION
    • Masaki Yoshikawa
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    THREADED JOINT FOR HEAVY-WALLED OIL COUNTRY TUBULAR GOODS
    • Publication number 20160319966
    • Publication date Nov 3, 2016
    • JFE STEEL CORPORATION
    • Takamasa Kawai
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    THREADED JOINT FOR OIL COUNTRY TUBULAR GOODS
    • Publication number 20160178095
    • Publication date Jun 23, 2016
    • JFE STEEL CORPORATION
    • Takamasa Kawai
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    THREADED JOINT FOR OIL COUNTRY TUBULAR GOODS (AS AMENDED)
    • Publication number 20160130884
    • Publication date May 12, 2016
    • JFE STEEL CORPORATION
    • Takamasa Kawai
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    THREADED JOINT FOR OIL COUNTRY TUBULAR GOODS
    • Publication number 20160123091
    • Publication date May 5, 2016
    • JFE STEEL CORPORATION
    • Takamasa Kawai
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    THREADED JOINT FOR PIPES
    • Publication number 20150377391
    • Publication date Dec 31, 2015
    • JEF STEEL CORPORATION
    • Takuya NAGAHAMA
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    THREADED JOINT FOR PIPES
    • Publication number 20150198270
    • Publication date Jul 16, 2015
    • JFE STEEL CORPORATION
    • Takuya Nagahama
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    THREADED JOINT FOR PIPES
    • Publication number 20150061287
    • Publication date Mar 5, 2015
    • JFE STEEL CORPORATION
    • Masaki Yoshikawa
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    THREADED JOINT FOR PIPES
    • Publication number 20140116560
    • Publication date May 1, 2014
    • JFE STEEL CORPORATION
    • Takamasa Kawai
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    THREADED JOINT FOR STEEL PIPES
    • Publication number 20140049045
    • Publication date Feb 20, 2014
    • JFE STEEL CORPORATION
    • Masaki Yoshikawa
    • E21 - EARTH DRILLING MINING