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Kai Liu

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  • Zhejiang Province, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Protective element
    • Patent number 8,402,981
    • Issue date Mar 26, 2013
    • Yotrio Group Co., Ltd.
    • Kai Liu
    • A45 - HAND OR TRAVELLING ARTICLES
  • Information Patent Grant

    Umbrella
    • Patent number 8,360,080
    • Issue date Jan 29, 2013
    • Yotrio Group Co., Ltd.
    • Kai Liu
    • A45 - HAND OR TRAVELLING ARTICLES
  • Information Patent Grant

    Telescoping umbrella
    • Patent number 8,113,223
    • Issue date Feb 14, 2012
    • Yotrio Group Co., Ltd.
    • Zhonglin Wang
    • A45 - HAND OR TRAVELLING ARTICLES

Patents Applicationslast 30 patents

  • Information Patent Application

    UMBRELLA
    • Publication number 20100192997
    • Publication date Aug 5, 2010
    • Kai Liu
    • A45 - HAND OR TRAVELLING ARTICLES
  • Information Patent Application

    PROTECTIVE ELEMENT
    • Publication number 20100037929
    • Publication date Feb 18, 2010
    • Kai Liu
    • A45 - HAND OR TRAVELLING ARTICLES