ALEXANDRIA, Va., June 4 -- United States Patent no. 12,320,280, issued on June 3, was assigned to HYUNDAI MOTOR COMPANY (Seoul, South Korea) and KIA Corp. (Seoul, South Korea).

"Apparatus and method of diagnosing a blow-by gas recirculation system" was invented by Bon Chang Koo (Seongnam-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus of diagnosing a blow-by gas recirculation system includes: a head portion of an engine forming a combustion chamber, a head cover provided above the head portion, a crankcase formed below the combustion chamber, an intake line through which intake air flows into the combustion chamber, a breather hose connecting the crankcase and the intake line upst...