ALEXANDRIA, Va., April 15 -- United States Patent no. 12,602,707, issued on April 14, was assigned to WALGREEN Co. (Deerfield, Ill.).

"Machine learning system for personally optimized offer decay curves" was invented by Gunjan Dhanesh Bhow (Menlo Park, Calif.), Ajumobi O. Udechukwu (Lake Forest, Ill.), Ryan M. Snedden (Chicago) and Brian C. Tyrrell (Western Springs, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An offer decay generation model determines, for a particular customer, a personalized optimal offer decay curve of an incentive corresponding to a product provided by an enterprise, where the offer decay curve defines a set of decreasing incentive values and respective time intervals during whic...