ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,480,872, issued on Nov. 25, was assigned to SICK AG (Waldkirch, Germany).
"Method for measuring a concentration of a gas and associated apparatus" was invented by Thomas Beyer (Freiburg, Germany) and Julian Edler (Emmendingen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a method for measuring a concentration of a gas in a gas mixture, said method comprising that: a light beam modulated in a ramp shape and/or in a step shape in its wavelength and additionally periodically modulated, in particular in its wavelength, is transmitted from a light source, in particular a laser, into a measurement zone; the modulated light b...