ALEXANDRIA, Va., July 14 -- United States Patent no. 12,680,695, issued on July 14, was assigned to GATE 5 ENERGY PARTNERS INC. (Irvine, Calif.).

"Thermal sludge to energy transformer" was invented by Steven Delson (Laguna Hills, Calif.) and Lawrence E. Dees Jr. (Aliso Viejo, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and processes provide for a thermal process to transform sludge (and a variety of other natural waste materials) into electricity. Dewatered sludge and other materials containing a high amount of latent energy are dried into a powdered biofuel using a drying gas produced in the system. The drying gas is recirculated and is heated by the biofuel produced in the system, waste h...