ALEXANDRIA, Va., March 5 -- United States Patent no. 12,241,626, issued on March 4, was assigned to WS-WARMEPROZESSTECHNIK GMBH (Renningen, Germany).
"Method and device for flameless stepwise combustion" was invented by Joachim G. Wunning (Leonberg, Germany) and Joachim A. Wunning (Leonberg, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for heating a heating chamber to a temperature below the spontaneous ignition temperature of the fuel that is used, wherein fuel and air are reacted in flameless oxidation in a non-stoichiometric mixture ratio in a combustion chamber. The air ratio Lambda is at least lower than the stoichiometric ratio Lambda=1 such that the temperature in the combustion cha...