ALEXANDRIA, Va., April 15 -- United States Patent no. 12,604,376, issued on April 14, was assigned to A.L.M. HOLDING COMPANY (Onalaska, Wis.).

"Microwave heating applied to mining and related features" was invented by Drew J. Frederixon (Rockland, Wis.), Gerald H. Reinke (La Crosse, Wis.), Jacob G. Hehir (Holmen, Wis.), Michael R. Byrnes (Sarona, Wis.) and Vernon R. Hegg (Plymouth, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system for processing precursor material, including at least one microwave generator, at least one microwave guide operatively connecting the at least one microwave generator to at least a first conveyor unit, and the first conveyor unit provided in a first housing that compri...