ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,778,126, issued on Nov. 3, was assigned to BASF SE (Ludwigshafen, Germany).

"Mesoionic imidazolium compounds and derivatives for combating animal pests" was invented by Olesya Kuzmina (Ludwigshafen, Germany), Ashokkumar Adisechan (Navi Mumbai, India) and Joachim Dickhaut (Ludwigshafen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "Mesoionic imidazolium compounds of formula (I) and their uses for combating animal pests. The present invention relates to compounds of formula (I), wherein A, W, Y, T and R1 are defined as in the description, and to the stereoisomers, salts, tautomers and N-oxides thereof and to compositions comprising such compounds....