Patents by Inventor Xingsong ZHANG

Xingsong ZHANG 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).

  • OXASPIRO SUBSTITUTED PYRROLOPYRAZOLE DERIVATIVE, INTERMEDIATE THEREOF, AND PREPARATION METHOD THEREFOR
    Publication number: 20240109895
    Abstract: An oxaspiro substituted pyrrolopyrazole derivative, an intermediate thereof, and a preparation method therefor.
    Type: Application
    Filed: December 29, 2021
    Publication date: April 4, 2024
    Applicants: SHANGHAI HAIYAN PHARMACEUTICAL TECHNOLOGY CO., LTD., YANGTZE RIVER PHARMACEUTICAL GROUP CO., LTD.
    Inventors: Zhenya ZENG, Chao KAN, Qingfu GAO, Yixiao FENG, Bo WU, Xingsong ZHANG, Youhong MA, Kejun SUN