ALEXANDRIA, Va., June 9 -- United States Patent no. 12,651,757, issued on June 9, was assigned to Robert Bosch GmbH (Stuttgart, Germany).
"Heat exchanger system for operating a fuel cell stack" was invented by Helerson Kemmer (Vaihingen, Germany) and Jochen Braun (Heimsheim, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a heat exchanger system for operating a fuel cell stack, comprising: -a first compressor and a second compressor for the cathode gas fed to the fuel cell stack, the second compressor being fluidically downstream of the first compressor; -a turbine, which is mechanically coupled to the second compressor and against which the cathode gas discharged from the fue...