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  • TAIPEI CITY, TW
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Patents Grantslast 30 patents

  • Information Patent Grant

    Screwless eyeglasses
    • Patent number 9,016,856
    • Issue date Apr 28, 2015
    • Action Eyewear Corp.
    • Tuo-Liu Chang
    • G02 - OPTICS
  • Information Patent Grant

    Glasses structure
    • Patent number 8,142,013
    • Issue date Mar 27, 2012
    • Tuo-Liu Chang
    • G02 - OPTICS

Patents Applicationslast 30 patents

  • Information Patent Application

    SCREWLESS EYEGLASSES
    • Publication number 20140247421
    • Publication date Sep 4, 2014
    • ACTION EYEWEAR CORP.
    • TUO-LIU CHANG
    • G02 - OPTICS
  • Information Patent Application

    GLASSES STRUCTURE
    • Publication number 20110222018
    • Publication date Sep 15, 2011
    • TUO-LIU CHANG
    • G02 - OPTICS