ALEXANDRIA, Va., March 3 -- United States Patent no. 12,564,595, issued on March 3, was assigned to Shionogi & Co. Ltd. (Osaka, Japan).

"Prophylactic and therapeutic pharmaceutical agent for HIV infectious diseases characterized by comprising combination of integrase inhibitor and anti-HIV agent" was invented by Tomokazu Yoshinaga (Osaka, Japan) and Yutaka Tomida (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A prophylactic or therapeutic pharmaceutical agent for HIV infectious diseases, said pharmaceutical agent being characterized by comprising a combination of: (A) a compound represented by formula (I) (wherein ring A represents a non-aromatic heterocyclic ring; ring B represents a benzene r...