ALEXANDRIA, Va., March 17 -- United States Patent no. 12,576,395, issued on March 17, was assigned to BASF Mobile Emissions Catalysts LLC (Iselin, N.J.).

"Emission control catalyst article with PGM-gradient architecture" was invented by Vjunov Aleksei (Iselin, N.J.) and Sun Yipeng (Iselin, N.J.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The presently invention provides an emission control catalyst article comprising a substrate, a bottom washcoat layer comprising a platinum group metal coated on the 60 to 100% length of the substrate, and a top washcoat layer comprising a platinum group metal coated on the 60 to 100% length of the substrate such that the top coat covers at least 60% of the length of the ...