ALEXANDRIA, Va., March 26 -- United States Patent no. 12,256,730, issued on March 25, was assigned to Monsanto Technology LLC (St. Louis).

"Microencapsulated herbicides" was invented by John W. Hemminghaus (Chesterfield, Mo.), Neha Rana (Chesterfield, Mo.), Steven T. Voss (Edwardsville, Ill.) and Junhua Zhang (Chesterfield, Mo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Herbicidal microcapsules containing a combination of herbicides are described. In particular, the herbicidal microcapsules include a core material comprising an acetamide herbicide and a second herbicide and a shell wall encapsulating the core material. Also described are processes for preparing the microcapsules, various herbicidal compo...