Patents by Inventor Ruobing HOU

Ruobing HOU 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).

  • Method for making liquid separation membrane
    Patent number: 8722146
    Abstract: A method for making a liquid separation membrane, including: (1) providing a polyvinylidene fluoride liquid separation membrane or polypropylene liquid separation membrane prepared by a thermally induced phase separation method as a substrate membrane, soaking the substrate membrane with water or a weak polar organic liquid to make membrane pores of the substrate membrane filled with the liquid, the soaking time being between 0.5 s and 1 min, and the weak polar organic liquid being indissolvable and compatible with the polyvinylidene fluoride liquid separation membrane or polypropylene liquid separation membrane; (2) coating a casting solution of polyvinylidene fluoride on the surface of the soaked substrate membrane obtained in step (1), and quickly soaking the substrate membrane in a coagulating bath heated to a temperature of 60-100° C. for curing to yield the liquid separation membrane.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: May 13, 2014
    Assignee: Tianjin Motimo Membrane Technology Co., Ltd.
    Inventors: Jianli Liu, Changfa Xiao, Xiaoyu Hu, Wujiang Zhang, Ruobing Hou
  • METHOD FOR MAKING LIQUID SEPARATION MEMBRANE
    Publication number: 20120276294
    Abstract: A method for making a liquid separation membrane, including: (1) providing a polyvinylidene fluoride liquid separation membrane or polypropylene liquid separation membrane prepared by a thermally induced phase separation method as a substrate membrane, soaking the substrate membrane with water or a weak polar organic liquid to make membrane pores of the substrate membrane filled with the liquid, the soaking time being between 0.5 s and 1 min, and the weak polar organic liquid being indissolvable and compatible with the polyvinylidene fluoride liquid separation membrane or polypropylene liquid separation membrane; (2) coating a casting solution of polyvinylidene fluoride on the surface of the soaked substrate membrane obtained in step (1), and quickly soaking the substrate membrane in a coagulating bath heated to a temperature of 60-100° C. for curing to yield the liquid separation membrane.
    Type: Application
    Filed: July 2, 2012
    Publication date: November 1, 2012
    Applicant: TIANJIN MOTIMO MEMBRANE TECHNOLOGY CO., LTD.
    Inventors: Jianli LIU, Changfa XIAO, Xiaoyu HU, Wujiang ZHANG, Ruobing HOU