Patents by Inventor Xiuying Chen

Xiuying Chen 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).

  • Publication number: 20220145045
    Abstract: The field of new compounds and synthesis methods thereof are related, and particularly to a structure of a steric hindrance adjustable weak base light stabilizer and a preparation method and application thereof. According to the innovative light stabilizer, a steric hindrance thereof is adjusted by establishing substituent generating the steric hindrance around nitrogen atoms; moreover, an electronegativity of the nitrogen atom can be influenced by adjusting a distance of a polar group, so that an alkalinity or a nucleophilicity of the nitrogen atom is adjusted. A desired effect is obtained by adjusting a steric hindrance and a nucleophilic property or an alkalinity where the nitrogen atom is located, so that an application range of the innovative light stabilizer is widened, and the innovative light stabilizer is suitable for PC, polyester, PVC and other slightly acidic or certain electrophilic polymer materials to serve as a light stability protecting aid.
    Type: Application
    Filed: September 17, 2021
    Publication date: May 12, 2022
    Inventors: Lijuan MAO, Shubai LIU, Chengshi ZHAO, Qiwei YIN, Yifan DING, Yifei WANG, Rui LUO, Xiuying CHEN, Jijiang WANG, Jing LI, Chunjuan XU, Jinge SONG, Jun CHEN, Meiya YU
  • Patent number: D851595
    Type: Grant
    Filed: February 18, 2019
    Date of Patent: June 18, 2019
    Inventor: Xiuying Chen
  • Patent number: D866446
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: November 12, 2019
    Assignee: Zhejiang Shijia Import and Export Co., Ltd
    Inventor: Xiuying Chen
  • Patent number: D899366
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: October 20, 2020
    Assignee: ZHEJIANG SHIJIA IMPORT AND EXPORT CO., LTD
    Inventor: Xiuying Chen