Patents by Inventor Ruijun Zhao

Ruijun Zhao 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).

  • Process for forming a synthetic leather
    Patent number: 11746465
    Abstract: A process of making a synthetic leather includes (i) first, contacting a textile with an aqueous solution containing a cationic hydroxyethylcellulose polymer to form a modified textile component; (ii) subsequently, impregnating the modified textile component with an aqueous polyurethane dispersion externally stabilized with an anionic surfactant; and (iii) precipitating the polyurethane in the modified textile component. And a synthetic leather formed by the process.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: September 5, 2023
    Assignee: The Dow Chemical Company
    Inventors: Xiangyang Tai, Zhaohui Qu, Ruijun Zhao, Yunlong Guo, Xiaoyi Pang
  • PAINT ROLLER COVER FOR MULTICOLOR PAINT, METHOD OF UNIFORMLY APPLYING MULTICOLOR PAINT AND METHOD OF QUANTIFYING UNIFORMITY OF PAINT APPLICATION
    Publication number: 20220080456
    Abstract: A paint roller cover for applying multi-color paint is described. The paint roller includes a foam having a surface groove, the foam has an average cell size of 0.3 to 5 mm. The groove have a depth of 1 to 15 millimeters. A method of characterizing the uniformity of paint applied to a surface is also described. Further, a method of uniformly applying multicolor paint is described.
    Type: Application
    Filed: January 31, 2019
    Publication date: March 17, 2022
    Inventors: Ruijun ZHAO, Bin CHEN, Hui LIU, Ling LI, Ellen C. KEENE, Daria MONAENKOVA
  • Process for Forming a Synthetic Leather
    Publication number: 20210172115
    Abstract: A process of making a synthetic leather includes (i) first, contacting a textile with an aqueous solution containing a cationic hydroxyethylcellulose polymer to form a modified textile component; (ii) subsequently, impregnating the modified textile component with an aqueous polyurethane dispersion externally stabilized with an anionic surfactant; and (iii) precipitating the polyurethane in the modified textile component. And a synthetic leather formed by the process.
    Type: Application
    Filed: August 21, 2018
    Publication date: June 10, 2021
    Inventors: Xiangyang Tai, Zhaohui Qu, Ruijun Zhao, Yunlong Guo, Xiaoyi Pang