ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,123, issued on May 20, was assigned to Ecolab USA Inc. (St. Paul, Minn.).
"Hydrogen sulfide scavengers" was invented by Daniel Robert Dreyer (Rosenberg, Texas) and Elizabeth Balapitiya (Missouri City, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "Scavenging compounds and compositions useful for scavenging hydrogen sulfide from streams are disclosed. The scavenging compositions may include a suspension of a metal component, a carrier solvent, and a polymer comprising styrene, propylene and ethylene. The streams may include asphalt, crude oil, naphtha, liquefied petroleum gas, vacuum gas oil, fuel oil, atmospheric tower bottoms, bitumen, and an...