ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,512,492, issued on Dec. 30, was assigned to Robert Bosch GmbH (Stuttgart, Germany).

"Method for operating a fuel cell system, and analysis unit for a fuel cell system" was invented by Timo Bosch (Renningen, Germany), Christopher Bruns (Boeblingen, Germany) and Tobias Falkenau (Esslingen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a method for operating a fuel cell system with at least one fuel cell which is supplied with hydrogen via an anode path and oxygen via a cathode path, wherein anode exhaust gas exiting the fuel cell is recirculated, but from time to time a part of the anode exhaust gas is introduced into an ...