Patents by Inventor Ruiquan Qi

Ruiquan Qi 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).

  • Polyisocyanate modified with sulphamic acid, preparation method thereof and use thereof
    Patent number: 9975985
    Abstract: A polyisocyanate modified with sulphamic acid and a mixture thereof, the preparation method thereof, and the use thereof in the production of polyurethane, especially as a cross-linking ingredient in the field of aqueous coatings and adhesives containing groups that are capable of reacting with isocyanate groups.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: May 22, 2018
    Assignee: Wanhua Chemical Group Co., Ltd.
    Inventors: Xueshun Ji, Yunquan Jin, Zhengchao Lin, Zhen Wang, Ruiquan Qi
  • POLYISOCYANATE MODIFIED WITH SULPHAMIC ACID, PREPARATION METHOD THEREOF AND USE THEREOF
    Publication number: 20160280836
    Abstract: A polyisocyanate modified with sulphamic acid and a mixture thereof, the preparation method thereof, and the use thereof in the production of polyurethane, especially as a cross-linking ingredient in the field of aqueous coatings and adhesives containing groups that are capable of reacting with isocyanate groups.
    Type: Application
    Filed: September 26, 2013
    Publication date: September 29, 2016
    Applicants: Wanhua Chemical Group Co., Ltd., Wanhua Chemical (Guangdong) Co., Ltd., Wanhua Chemical (Ningbo) Co., Ltd.
    Inventors: Xueshun Ji, Yunquan Jin, Zhengchao Lin, Zhen Wang, Ruiquan Qi