ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,478,751, issued on Nov. 25, was assigned to Sleepnet Corp. (Hampton, N.H.).

"Positive airway pressure (PAP) mask" was invented by Mark Gong (Andover, Mass.), Jerry Gong (Andover, Mass.), Robert Skaff (Hampton, N.H.) and Thomas Moulton (Rye, N.H.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A flexible positive airway pressure (PAP) mask body, frame, and cushion are described. The mask body includes prongs that insert through and act upon apertures of the mask frame to connect the mask frame to the mask body. An airtight seal may be created between the mask body and the mask frame by a ball and socket connector, of the mask frame, having an elongated po...