ALEXANDRIA, Va., July 3 -- United States Patent no. 12,343,705, issued on July 1, was assigned to Johnson Matthey PLC (London).

"TWC catalysts for gasoline engine exhaust gas treatments" was invented by Paul Millington (Reading, Great Britain), Nicoleta Muresan (Reading, Great Britain), Andrea Eva Pascui (Reading, Great Britain) and Maria C. Vlachou (Reading, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A catalyst composition comprising a first platinum group metal (PGM) component and a first support material, wherein the first PGM component comprises platinum (Pt) and palladium (Pd) and is supported on the first support material; and wherein the first PGM component has a Pt:Pd molar ratio of...