ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,383, issued on Feb. 3, was assigned to ResMed Pty Ltd (Bella Vista, Australia).
"Natural breathing full face mask" was invented by Muditha Pradeep Dantanarayana (Sydney).
According to the abstract* released by the U.S. Patent & Trademark Office: "A patient interface comprising a cushion having a nasal plenum chamber, an oral plenum chamber, and a passage formed between the nasal and oral plenum chambers. The passage is configured to allow airflow to pass between the nasal and oral plenum chambers. The cushion also includes a valve including valve body and an adjustment structure that is positioned between the nasal chamber and the oral chamber and is movable relative to the valve ...