ALEXANDRIA, Va., June 10 -- United States Patent no. 12,290,791, issued on May 6, was assigned to GPL Odorizers LLC (Lakewood, Colo.).

"Accurate odorization control" was invented by Adrian Charles Stang (Arvada, Colo.), Charles Spencer Toft (Centennial, Colo.) and Preston Tyler Bender Marcoux (Littleton, Colo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system is provided. The system includes one or more of a fuel media supply, coupled to a media supply injection valve and a fuel media supply flow meter, configured to provide unodorized fuel media, an odorant supply, configured to provide pressurized odorant and coupled to each of a first actuator to allow odorant flow at a first pressure, a second actu...