ALEXANDRIA, Va., June 12 -- United States Patent no. 12,296,298, issued on May 13, was assigned to UMICORE AG & Co. KG (Hanau-Wolfgang, Germany).
"Double-layer three-way catalyst with further improved ageing stability" was invented by Joel Despres (Rodenbach, Germany), Martin Roesch (Rodgau, Germany), Joerg-Michael Richter (Frankfurt, Germany), Carolin Braun (Langen, Germany), Marcus Schmidt (Ginsheim, Germany) and Nicole Schichtel (Butzbach Hoch-Weisel, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a catalyst comprising two layers on an inert catalyst carrier, a layer A containing at least palladium as a platinum group metal, in addition to a cerium/zirconium/lantha...