ALEXANDRIA, Va., July 3 -- United States Patent no. 12,347,897, issued on July 1, was assigned to HYUNDAI MOTOR COMPANY (Seoul, South Korea) and KIA Corp. (Seoul, South Korea).

"Fuel cell system and method of controlling heater thereof" was invented by Jong Bo Won (Yongin-si, South Korea) and Sung Kyung Choi (Yongin-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a fuel cell system and a method of controlling a heater thereof. A fuel cell system according to the present disclosure includes a cathode oxygen depletion (COD) heater that is disposed on a line through which cooling water flowing into a fuel cell stack circulates and heats the cooling water or consu...