ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,908, issued on Sept. 8, was assigned to Air Products and Chemicals Inc. (Allentown, Pa.).

"Apparatus and process for improved argon recovery" was invented by Jay A. Thakkar (Allentown, Pa.), Alan D. Berger (Fogelsville, Pa.) and Donn Michael Herron (Fogelsville, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus and process for argon recovery can be configured so that an argon-enriched stream including oxygen therein can be recycled to a column for air separation and subsequent argon separation to provide improved argon recovery with reduced power. The recycling of this argon-enriched stream can be provided such that there is sufficient...