US Patent Issued to L'Air Liquide Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude on Oct. 27 for "Process and appliance for the purification of a gas flow containing at least one nitrogen oxide" (French, American Inventors)

ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,773,666, issued on Oct. 27, was assigned to L'Air Liquide Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude (Paris).

"Process and appliance for the purification of a gas flow containing at least one nitrogen oxide" was invented by Marine Andrich (Jouy-en-Josas, Fla.), Martin Raventos (Paris), Ludovic Granados (Puteaux, France) and Richard Dubettier-Grenier (La Varenne Saint Hilaire, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "In a process for the purification of a gas flow containing NO2, carbon dioxide and nitrogen, the gas flow is purified by adsorption in order to produce a flow enriched in carbon dioxide and in NOx...