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Chunwei Zhang

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  • Shanghai, CN
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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    Vacuum Coating Device
    • Publication number 20220341026
    • Publication date Oct 27, 2022
    • Baoshan Iron & Steel Co., Ltd
    • Sanbing Ren
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Application

    ROLLING METHOD FOR BOARDS WITH DIFFERENT LONGITUDINAL THICKNESSES
    • Publication number 20180071803
    • Publication date Mar 15, 2018
    • Baoshan Iron & Steel Co., Ltd
    • Chunwei Zhang
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...