US Patent Issued to Air Products and Chemicals on Oct. 27 for "Bio LNG production using membranes" (Missouri Inventor)

ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,773,663, issued on Oct. 27, was assigned to Air Products and Chemicals Inc. (Allentown, Pa.).

"Bio LNG production using membranes" was invented by Matthew P. O'Brien (House Springs, Mo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed herein are methods and systems for producing a liquefied methane product from a methane- and carbon dioxide-containing feed stream, in which a plurality of membrane stages comprising gas separation membranes that are more permeable to carbon dioxide than methane are used to remove carbon dioxide from the feed and form a retentate stream that is enriched in methane, said retentate stream being then cooled and liquef...