ALEXANDRIA, Va., March 24 -- United States Patent no. 12,584,438, issued on March 24, was assigned to YANMAR HOLDINGS Co. LTD. (Osaka, Japan).

"Diesel engine" was invented by Yuki Okamoto (Osaka, Japan) and Masataka Uchibori (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "This diesel engine includes a turbocharger which compresses intake air by utilizing a flow of exhaust gas, and an exhaust gas after-treatment device which purifies the exhaust gas, wherein an exhaust pipe connects the exhaust gas after treatment device and the turbocharger, and is connected upwardly to the exhaust gas after-treatment device. The exhaust pipe can have a curbed portion, and have one end and another end, and both ...