ALEXANDRIA, Va., May 19 -- United States Patent no. 12,630,789, issued on May 19, was assigned to ECOLAB USA INC. (Saint Paul, Minn.).

"Detergent composition comprising phosphinosuccinic acid adducts and methods of use" was invented by Carter M. Silvernail (Saint Paul, Minn.) and Erik C. Olson (Saint Paul, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Detergent compositions effective for controlling hard water scale accumulation are disclosed. Detergent compositions employing phosphinosuccinic acid and mono-, bis- and oligomeric phosphinosuccinic acid (PSO) derivatives with alkali metal carbonate and/or alkali metal hydroxide reduce hard water scale accumulation on treated surfaces at alkaline conditi...