ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,522,599, issued on Jan. 13, was assigned to ZHEJIANG HISUN PHARMACEUTICAL Co. LTD. (Zhejiang, China).

"Crystal forms of acrylic acid derivatives, preparation method therefor and use thereof" was invented by Jianfeng Zheng (Zhejiang, China), Liang Zhang (Zhejiang, China), Min Zhao (Zhejiang, China), Zhenjuan Shi (Zhejiang, China), Xufei Li (Zhejiang, China) and Zhiqing Yang (Zhejiang, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Crystal forms A, B, C, D, E, F, G and H of a compound represented by formula I and a preparation method therefor, as well as medical uses for the various crystal forms and advantages thereof in various aspects."

The pate...