US Patent Issued to Siemens on July 21 for "Measuring instrument for determining the gross or net calorific value of a hydrocarbon-containing fuel gas" (German Inventors)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,687,496, issued on July 21, was assigned to Siemens AG (Munich).

"Measuring instrument for determining the gross or net calorific value of a hydrocarbon-containing fuel gas" was invented by Camiel Heffels (Stutensee-Buchig, Germany) and Konstantin Harr (Karlsruhe, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The gross or net calorific value of a hydrocarbon-containing fuel gas is determined by using a Raman photometer. A Raman radiation obtained following interaction of laser light with the fuel gas is limited by a bandpass filter to a wavenumber range of the C-H stretching vibrations of the hydrocarbons contained in the fuel gas around 2900 c...