ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,503,970, issued on Dec. 23, was assigned to KAWASAKI MOTORS LTD. (Akashi, Japan).

"Exhaust structure for engine and engine" was invented by Keisuke Omoto (Akashi, Japan), Matthew Colombo (Grand Rapids, Mich.), Jakob Daniel Cook (Grand Rapids, Mich.), Shuichi Yonaiyama (Akashi, Japan) and Kazuki Masui (Grand Rapids, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An exhaust pipe connected to an engine body, the exhaust pipe into which an exhaust gas is introduced from the engine body, a catalyst body that purifies an exhaust gas, and a housing case that houses the catalyst body are included, and the housing case includes an inlet portion connected t...