ALEXANDRIA, Va., July 3 -- United States Patent no. 12,342,941, issued on July 1, was assigned to Purple Innovation LLC (Lehi, Utah).

"Composite mattresses with air chambers" was invented by Brock Keith Harris (Draper, Utah), James T. Grutta (Draper, Utah), Brett Pearson (Taylorsville, Utah) and Michael Allen Pierce (American Fork, Utah).

According to the abstract* released by the U.S. Patent & Trademark Office: "A composite mattress includes a pressurizable layer and a top layer. A coiled spring layer may also be included in the composite mattress. The composite mattress may also include a base layer and/or an intermediate layer. A foundation, or rail, may laterally surround the pressurizable layer and the top layer. The composite mattre...