ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,092, issued on March 31, was assigned to Hangzhou Innogate Pharma Co. Ltd. (Hangzhou, China).

"Polycyclic compound acting as kinase inhibitor" was invented by Hancheng Zhang (Hangzhou, China), Xin Cheng (Hangzhou, China), Wei Jia (Hangzhou, China) and Congcong Cai (Hangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a class of compounds containing tricyclic heteroaryl groups. Specifically, the present invention provides compounds of the structure represented by the following formula (I) (the definition of each group is described in the specification), pharmaceutical compositions containing the compounds of ...