TREA

Alan Long Thien Du

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  • Covina, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Eccentric backflow preventer
    • Patent number 11,976,736
    • Issue date May 7, 2024
    • Acorn Engineering Company, Inc.
    • Pui Yuen Ng
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    Clapper With an Upstream Cam-Arm and Roller Arrangement
    • Publication number 20240093795
    • Publication date Mar 21, 2024
    • Acorn Engineering Company, Inc.
    • Luis Fernando Prieto
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Spring Stop for Clapper Valve
    • Publication number 20240093796
    • Publication date Mar 21, 2024
    • Acorn Engineering Company, Inc.
    • Edward Barry Knoles
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Eccentric Backflow Preventer
    • Publication number 20230025349
    • Publication date Jan 26, 2023
    • Acorn Engineering Company, Inc.
    • Pui Yuen Ng
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...