ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,435,280, issued on Oct. 7, was assigned to ECOLAB USA Inc. (St. Paul, Minn.).

"Crude oil demulsifier compositions and uses thereof" was invented by Ashish Dhawan (Aurora, Ill.) and Regan Andrew Jones (Sugar Land, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to demulsifier compositions and methods of resolving emulsions using the compositions. The demulsifiers include modified hydroxy-succinimide copolymers. For example, the demulsifiers may include ethoxylated or propoxylated hydroxy-succinimide copolymers. The demulsifier compositions are useful for resolving oil-in-water, water-in-oil, and complex emulsions of wat...