ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,559,449, issued on Feb. 24, was assigned to ZHEJIANG HISUN PHARMACEUTICAL Co. LTD. (Zhejiang, China) and SHANGHAI ARYL PHARMTECH Co. LTD. (Shanghai).

"Aromatic ring or heteroaromatic ring derivatives, preparation method therefor and use thereof" was invented by Yanghui Guo (Zhejiang, China), Weiwei Liao (Zhejiang, China), Lichen Meng (Zhejiang, China), Taishan Hu (Zhejiang, China), Lei Chen (Zhejiang, China) and Guoping Jiang (Zhejiang, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to aromatic ring or heteroaromatic ring derivatives, a preparation method therefor and applications thereof in medicine. Specifically, th...