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Kai Feng

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  • Yantai, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Polycarbonate preparation method
    • Patent number 9,062,154
    • Issue date Jun 23, 2015
    • Wanhua Chemical Group Co., Ltd.
    • Lei Zhang
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

  • Information Patent Application

    POLYCARBONATE PREPARATION METHOD
    • Publication number 20140350198
    • Publication date Nov 27, 2014
    • WANHUA CHEMICAL GROUP CO., LTD.
    • Lei Zhang
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...