ALEXANDRIA, Va., June 16 -- United States Patent no. 12,303,831, issued on May 20, was assigned to Mitsui Mining & Smelting Co. Ltd. (Tokyo).
"Exhaust gas purification system" was invented by Takashi Baba (Saitama, Japan) and Hiroki Kurihara (Saitama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An object of the present invention is to provide an exhaust gas purification system including a first exhaust gas treatment section provided upstream in an exhaust pathway of an internal-combustion engine, a second exhaust gas treatment section provided upstream in the exhaust pathway of the internal-combustion engine, wherein the exhaust gas purification system allows rhodium element contained in a catalyst ...