US Patent Issued to Linde on Dec. 30 for "Process for cryogenic fractionation of air, air fractionation plant and integrated system composed of at least two air fractionation plants" (German Inventor)

ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,510,294, issued on Dec. 30, was assigned to Linde GmbH (Pullach, Germany).

"Process for cryogenic fractionation of air, air fractionation plant and integrated system composed of at least two air fractionation plants" was invented by Dimitri Golubev (Geretsried, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A process for cryogenic fractionation of air uses an air fractionation plant (100-400) comprises a rectification column system (10) having a high-pressure column (11) operated at a pressure level of 9 to 14.5 bar, a low-pressure column (12) operated at a pressure level of 2 to 5 bar, and an argon column (13). A recirculating stream is formed ...