ALEXANDRIA, Va., June 19 -- United States Patent no. 12,330,938, issued on June 17, was assigned to HYUNDAI MOTOR COMPANY (Seoul, South Korea) and KIA Corp. (Seoul, South Korea).

"NG pyrolysis system and method for controlling same" was invented by Han Eol Song (Seongnam-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A cooler installed to cool NG supplied from a compressor to a pyrolysis reactor and configured to independently use multiple refrigerants is provided; a first refrigerant supply device provided to supply a first refrigerant for the cooler; and a second refrigerant supply device configured to supply, to the cooler, a fuel gas for a burner, including an off-gas and NG which has not...