TREA

Haifang Zhao

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  • Katy, TX, US
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Patents Applicationslast 30 patents

  • Information Patent Application

    GATE VALVE CAVITY REDUCER
    • Publication number 20230392704
    • Publication date Dec 7, 2023
    • OIL STATES ENERGY SERVICES, L.L.C.
    • Jimmy Livingston
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    FRAC MANIFOLD ISOLATION TOOL
    • Publication number 20220307362
    • Publication date Sep 29, 2022
    • OIL STATES ENERGY SERVICES, L.L.C.
    • Jimmy Livingston
    • E21 - EARTH DRILLING MINING