US Patent Issued to L'Air Liquide Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude on July 1 for "Air separation unit by cryogenic distillation" (French, Chinese Inventors)

ALEXANDRIA, Va., July 3 -- United States Patent no. 12,345,469, issued on July 1, was assigned to L'Air Liquide Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude (Paris).

"Air separation unit by cryogenic distillation" was invented by Remy Kurtz (Zhejiang, China), Patrice Cavagne (Le Perreux sur Marne, France) and Delphine Vallier (Saint Pierre la Garenne, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "An air separation unit using cryogenic distillation comprises a first column, a second column thermally linked to the first column, a first argon column, a second argon column, means for sending cooled, compressed and purified air to at least the first column, means for sending ...