ALEXANDRIA, Va., July 3 -- United States Patent no. 12,344,707, issued on July 1, was assigned to PPG Industries Ohio Inc. (Cleveland).

"Functional polyester and method of producing the same" was invented by Michael G. Olah (Pittsburgh), Edward R. Millero Jr. (Gibsonia, Pa.), Scott J. Moravek (Mars, Pa.), Matthew William Skinner (Pittsburgh), Theodore Frank Novitsky (Butler, Pa.), William H. Retsch Jr. (Allison Park, Pa.) and Daniel Martin Connor (Evans City, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "There is described a method for the production of a functional polyester having functional group X. The method comprises the step of melt blending a composition comprising (i) a high number average mole...