ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,559,503, issued on Feb. 24.
"Anthelmintic aza-benzothiophene and aza-benzofuran compounds" was invented by Alan Long (Warthausen, Germany), Hannes Fiepko Koolman (Biberach an der Riss, Germany) and Hyoung Ik Lee (Alpharetta, Ga.).
According to the abstract* released by the U.S. Patent & Trademark Office: "This invention provides for compounds of the formula:wherein the variables are defined herein, or a stereoisomer, tautomer, N-oxide, hydrate, solvate, or salt thereof, compositions comprising these compounds, and method for the treatment, control or prevention of a parasitic infestation or infection in an animal in need thereof by administering an effective amount of these compounds...