ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,486,472, issued on Dec. 2, was assigned to Stepan Co. (Northbrook, Ill.).
"Concentrated liquid esterquat compositions" was invented by Dennis S. Murphy (Libertyville, Ill.), Kathryn E. Merwin (Palatine, Ill.), Teresa Germain (Orland Park, Ill.), Patrick Shane Wolfe (Palatine, Ill.) and Sebastian Flieger (Elk Grove Village, Ill.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Clear, stable concentrated liquid compositions are disclosed that comprise from 30% to 90% by weight of an esterquat active, and from 10% to 50% by weight of a particular solvent system. The esterquat active is the quaternized reaction product of a fatty acyl source having an Iodine V...