TREA

Sadao Douchi

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  • Chiyoda-ku, Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Threaded connection for steel pipe
    • Patent number 11,719,365
    • Issue date Aug 8, 2023
    • Nippon Steel Corporation
    • Yousuke Oku
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Threaded connection for steel pipe
    • Patent number 11,506,311
    • Issue date Nov 22, 2022
    • Nippon Steel Corporation
    • Yousuke Oku
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Threaded connection for tubular component
    • Patent number 11,473,373
    • Issue date Oct 18, 2022
    • Vallourec Oil and Gas France
    • Xavier Mencaglia
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Threaded connection for steel pipe
    • Patent number 11,391,097
    • Issue date Jul 19, 2022
    • Nippon Steel Corporation
    • Yousuke Oku
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Threaded connection for steel pipe
    • Patent number 10,883,319
    • Issue date Jan 5, 2021
    • Nippon Steel Corporation
    • Masaaki Sugino
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Threaded joint for steel pipe
    • Patent number 10,495,241
    • Issue date Dec 3, 2019
    • Nippon Steel Corporation
    • Keita Inose
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    THREADED CONNECTION FOR STEEL PIPE
    • Publication number 20220252188
    • Publication date Aug 11, 2022
    • NIPPON STEEL CORPORATION
    • Yousuke OKU
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    THREADED CONNECTION FOR STEEL PIPE
    • Publication number 20210341085
    • Publication date Nov 4, 2021
    • NIPPON STEEL CORPORATION
    • Yousuke OKU
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    THREADED CONNECTION FOR STEEL PIPE
    • Publication number 20210246737
    • Publication date Aug 12, 2021
    • NIPPON STEEL CORPORATION
    • Yousuke OKU
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    THREADED CONNECTION FOR TUBULAR COMPONENT
    • Publication number 20200102797
    • Publication date Apr 2, 2020
    • VALLOUREC OIL AND GAS FRANCE
    • Xavier MENCAGLIA
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Threaded Connection for Steel Pipe
    • Publication number 20190093799
    • Publication date Mar 28, 2019
    • NIPPON STEEL & SUMITOMO METAL CORPORATION
    • Masaaki Sugino
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Threaded Joint for Steel Pipe
    • Publication number 20180363813
    • Publication date Dec 20, 2018
    • NIPPON STEEL & SUMITOMO METAL CORPORATION
    • Keita INOSE
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Threaded Connection for Steel Pipe
    • Publication number 20180313168
    • Publication date Nov 1, 2018
    • NIPPON STEEL & SUMITOMO METAL CORPORATION
    • Masaaki Sugino
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...