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Jia-Guann Liau

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  • Taichung, TW
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Patents Grantslast 30 patents

  • Information Patent Grant

    Wrench structure
    • Patent number 11,691,263
    • Issue date Jul 4, 2023
    • Jia-Guann Liau
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Wrench wth two clamping parts
    • Patent number 11,135,704
    • Issue date Oct 5, 2021
    • Jia-Guann Liau
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Open wrench
    • Patent number 9,981,363
    • Issue date May 29, 2018
    • Jia-Guann Liau
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Open wrench
    • Patent number 8,776,641
    • Issue date Jul 15, 2014
    • Jia-Guann Liau
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Driving head for open wrench
    • Patent number 8,707,832
    • Issue date Apr 29, 2014
    • Jia-Guann Liau
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Wrench
    • Patent number 8,695,460
    • Issue date Apr 15, 2014
    • Jia-Guann Liau
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Open wrench
    • Patent number 8,443,701
    • Issue date May 21, 2013
    • Jia-Guann Liau
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Hand tool with a handle made by different material
    • Patent number 7,237,462
    • Issue date Jul 3, 2007
    • Jia-Guann Liau
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Patents Applicationslast 30 patents

  • Information Patent Application

    Wrench Structure
    • Publication number 20230022175
    • Publication date Jan 26, 2023
    • Jia-Guann Liau
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    WRENCH WTH TWO CLAMPING PARTS
    • Publication number 20200147764
    • Publication date May 14, 2020
    • Jia-Guann Liau
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    WRENCH
    • Publication number 20180015609
    • Publication date Jan 18, 2018
    • Jia-Guann Liau
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    OPEN END WRENCH AND METHOD FOR MAKING THE SAME
    • Publication number 20170050297
    • Publication date Feb 23, 2017
    • Jia-Guann Liau
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    OPEN WRENCH
    • Publication number 20160375558
    • Publication date Dec 29, 2016
    • Jia-Guann Liau
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    DRIVING HEAD FOR OPEN WRENCH
    • Publication number 20140060261
    • Publication date Mar 6, 2014
    • Jia-Guann Liau
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    WRENCH
    • Publication number 20130205953
    • Publication date Aug 15, 2013
    • Jia-Guann Liau
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    OPEN WRENCH
    • Publication number 20130167692
    • Publication date Jul 4, 2013
    • Jia-Guann Liau
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS