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Koji Yamamoto

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Patents Grantslast 30 patents

  • Information Patent Grant

    Double pipe and method for manufacturing same
    • Patent number 11,629,800
    • Issue date Apr 18, 2023
    • Yutaka Giken Co., Ltd.
    • Koji Yamamoto
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    DOUBLE PIPE AND METHOD FOR MANUFACTURING SAME
    • Publication number 20220057023
    • Publication date Feb 24, 2022
    • YUTAKA GIKEN CO., LTD.
    • Koji Yamamoto
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    DOUBLE PIPE
    • Publication number 20210102652
    • Publication date Apr 8, 2021
    • YUTAKA GIKEN CO., LTD.
    • Koji Yamamoto
    • F28 - HEAT EXCHANGE IN GENERAL