ALEXANDRIA, Va., June 4 -- United States Patent no. 12,320,288, issued on June 3, was assigned to UMICORE SHOKUBAI JAPAN Co. LTD. (Tokoname, Japan).

"Exhaust gas purification catalyst, method of purifying exhaust gas, and method of manufacturing exhaust gas purification catalyst" was invented by Yasuyuki Takeda (Kobe, Japan) and Shigekazu Minami (Kobe, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "In an exhaust gas purification catalyst, a catalytic component containing a first oxide, a second oxide, and a precious metal is supported on a three-dimensional structure; the ratio of the amount of precious metal supported on the first oxide to the total amount of precious metal supported on the first oxid...