ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,442,758, issued on Oct. 14, was assigned to ELICHENS (Grenoble, France).
"Method for analysing a gas using an optical sensor" was invented by Thanh Trung Le (Grenoble, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "Method for measuring an amount of a gas species-able to absorb light in an absorption spectral band-includes placing a gas between a measurement photodetector and a light source able to emit an incident light wave propagating through the gas to the photodetector. Electrical supply current passes through the light source to bring it to a temperature value. At multiple times: the light source illuminates the gas; the measurement photodet...