ALEXANDRIA, Va., July 15 -- United States Patent no. 12,661,614, issued on June 23, was assigned to Mallinckrodt Pharmaceuticals Ireland Ltd. (Dublin).

"Filter assembly for a therapeutic gas delivery device" was invented by Andrew Meyer (Madison, Wis.), John Stanton (Madison, Wis.) and Daniel Cody (Madison, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed herein is a sample gas filter assembly for a therapeutic gas delivery device. The sample gas filter assembly can have a filter apparatus, a water-permeable tubular membrane, and a ventilated cap. The sample gas filter assembly may be configured for maintaining a condensate pH from an assembly for humidity conditioning and filtering a sample gas...