ALEXANDRIA, Va., March 12 -- United States Patent no. 12,246,284, issued on March 11, was assigned to University of Southern California (Los Angeles) and TAI CHONG CHEANG STEAMSHIP Co. (H.K.) Ltd. (Hong Kong).

"Systems and methods for plasma-based remediation" was invented by Stephen B. Cronin (Los Angeles), Sriram Subramanian (Los Angeles), Tom Huiskamp (Los Angeles), Alec Nystrom (Los Angeles) and William Schroeder (Los Angeles).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system for exhaust gas remediation includes an engine, a plasma reactor, and a pulse source. The engine emits exhaust gas that includes NO molecules and NOx molecules. The plasma reactor includes an internal chamber that is fluidly co...