TREA

Tongqing Liu

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  • Beijing, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Condenser microphone chip
    • Patent number 8,121,315
    • Issue date Feb 21, 2012
    • Goer Tek Inc.
    • Qinglin Song
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    CONDENSER MICROPHONE CHIP
    • Publication number 20080232615
    • Publication date Sep 25, 2008
    • Goer Tek Inc.
    • Qinglin Song
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE