The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 08, 2025
Filed:
Dec. 31, 2020
Applicants:
Jiangsu Hengrui Medicine Co., Ltd., Jiangsu, CN;
Shanghai Hengrui Pharmaceutical Co., Ltd., Shanghai, CN;
Inventors:
Qi Wu, Jiangsu, CN;
Zhenxing Du, Jiangsu, CN;
Jie Wang, Jiangsu, CN;
Lin Wang, Jiangsu, CN;
Weidong Lu, Shanghai, CN;
Qiyun Shao, Shanghai, CN;
Jun Feng, Shanghai, CN;
Feng He, Shanghai, CN;
Assignees:
Jiangsu Hengrui Medicine Co., Ltd., Jiangsu, CN;
Shanghai Hengrui Pharmaceutical Co., Ltd., Shanghai, CN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 471/04 (2006.01);
U.S. Cl.
CPC ...
C07D 471/04 (2013.01); C07B 2200/13 (2013.01);
Abstract
The present disclosure relates to a crystal form of a pyridopyrimidine derivative and a preparation method thereof, and specifically relates to the crystal form of the compound of formula (I) and a preparation method thereof. The new crystal form has good physical and chemical properties, thereby facilitating clinical treatments.