TREA

The Hong Kong and China Gas Company Limited

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  • Hong Kong SAR, CN
Organizations

Patents Grantslast 30 patents

  • Information Patent Grant

    Shut-off device for pipe
    • Patent number 10,197,222
    • Issue date Feb 5, 2019
    • The Hong Kong and China Gas Company Limited
    • Carson Wai Keung Lee
    • F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
  • Information Patent Grant

    Shut-off device for pipe
    • Patent number 9,377,125
    • Issue date Jun 28, 2016
    • THE HONG KONG AND CHINA GAS COMPANY LIMITED
    • Wai Keung Carson Lee
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    SHUT-OFF DEVICE FOR PIPE
    • Publication number 20170350560
    • Publication date Dec 7, 2017
    • The Hong Kong and China Gas Company Limited
    • Carson Wai Keung Lee
    • F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
  • Information Patent Application

    SHUT-OFF DEVICE FOR PIPE
    • Publication number 20140332096
    • Publication date Nov 13, 2014
    • The Hong Kong and China Gas Company Limited
    • Wai Keung Carson Lee
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC