ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,394,812, issued on Aug. 19, was assigned to GM Global Technology Operations LLC (Detroit).
"Fuel cell stack re-compression method and design" was invented by Yeh-Hung Lai (Oakland, Mich.) and Jeffrey A. Rock (Rochester Hills, Mich.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method, fuel cell system and vehicle for maintaining compression via re-compression is provided. By recovering fuel cell stacks of the fuel cell system after a pre-determined time of operation and performing re-compression on each of the recovered fuel cell stacks, power generation capacity, active area pressure and seal force is recovered to address increased contact resistanc...