Patents by Inventor Junjian ZHENG

Junjian ZHENG has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Antibacterial and antifouling polymeric separation membrane and preparation method thereof
    Patent number: 10016729
    Abstract: This invention provides a polymeric separation membrane that has excellent durable antibacterial effect and stain resistance, and a preparation method thereof. The polymeric separation membrane can be widely applied for water treatment, which belongs to the field of water treatment and membrane separation science and technology. The polymeric separation membrane containing quaternary ammonium salt is prepared by the immersion precipitation phase inversion method, using quaternary ammonium salt mixed with polymer and additives. This modification method effectively improves the antibacterial and antifouling ability of the polymeric separation membrane prolongs the service life of membranes and significantly inhibits the reproduction of bacterial and microbial. The preparation method has the advantages of simple process, easy operation, easy for promotion, and also avoids expensive equipment.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: July 10, 2018
    Assignee: TONGJI UNIVERSITY
    Inventors: Zhiwei Wang, Mei Chen, Xingran Zhang, Xueye Wang, Junjian Zheng, Chen Pan, Zhichao Wu, Qiaoying Wang
  • ANTIBACTERIAL AND ANTIFOULING POLYMERIC SEPARATION MEMBRANE AND PREPARATION METHOD THEREOF
    Publication number: 20170095775
    Abstract: This invention provides a polymeric separation membrane that has excellent durable antibacterial effect and stain resistance, and a preparation method thereof. The polymeric separation membrane can be widely applied for water treatment, which belongs to the field of water treatment and membrane separation science and technology. The polymeric separation membrane containing quaternary ammonium salt is prepared by the immersion precipitation phase inversion method, using quaternary ammonium salt mixed with polymer and additives. This modification method effectively improves the antibacterial and antifouling ability of the polymeric separation membrane prolongs the service life of membranes and significantly inhibits the reproduction of bacterial and microbial. The preparation method has the advantages of simple process, easy operation, easy for promotion, and also avoids expensive equipment.
    Type: Application
    Filed: November 29, 2016
    Publication date: April 6, 2017
    Inventors: Zhiwei WANG, Mei CHEN, Xingran ZHANG, Xueye WANG, Junjian ZHENG, Chen PAN, Zhichao WU, Qiaoying WANG