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:
Jan. 18, 2022
Filed:
Jul. 01, 2019
Jiangsu Hengrui Medicine Co., Ltd., Jiangsu, CN;
Shanghai Hengrui Pharmaceutical Co., Ltd, Shanghai, CN;
Yahui Ma, Jiangsu, CN;
Haoyu Zhang, Shanghai, CN;
Long Han, Shanghai, CN;
Qiyun Shao, Shanghai, CN;
Zhenxing Du, Jiangsu, CN;
Jie Wang, Jiangsu, CN;
Jun Feng, Shanghai, CN;
Feng He, Shanghai, CN;
JIANGSU HENGRUI MEDICINE CO., LTD., Jiangsu, CN;
SHANGHAI HENGRUI PHARMACEUTICAL CO., LTD., Shanghai, CN;
Abstract
The present invention relates to crystal forms of an oxypyridine amide derivative and a preparation method therefor. In particular, the present invention relates to crystal forms A, B, C, D, E and F of a compound represented by formula (I) and a preparation method therefor. The crystal forms of the compound represented by formula (I) as described in the present invention have good crystal form stability and may be better for clinical use.