Patents by Inventor Weixing QI

Weixing 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).

  • Method for preparing oxaspirocycle derivative, and intermediate thereof
    Patent number: 11111236
    Abstract: A method for preparing an oxaspirocycle derivative and an intermediate thereof are described. The method reduces reaction steps, improves reaction yield, is simple and easy to operate, and is favorable for industrial large-scale production.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: September 7, 2021
    Assignee: Jiangsu Hengrui Medicine Co., Ltd.
    Inventors: Wenhai Li, Weixing Qi, Zhenjun Qiu
  • METHOD FOR PREPARING OXASPIROCYCLE DERIVATIVE, AND INTERMEDIATE THEREOF
    Publication number: 20200308151
    Abstract: A method for preparing an oxaspirocycle derivative and an intermediate thereof are described. The method reduces reaction steps, improves reaction yield, is simple and easy to operate, and is favorable for industrial large-scale production.
    Type: Application
    Filed: September 27, 2018
    Publication date: October 1, 2020
    Inventors: Wenhai LI, Weixing QI, Zhenjun QIU