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US12605518B2 Gas Passage for PAP Device with Noise Reduction

USPTO granted Patent US12605518B2 to WALLENBERG UNION LLC on April 21, 2026, covering a gas passage for use in a PAP (positive airway pressure) device with integrated noise reduction components. The patent claims 25 items and was filed on July 19, 2024, under Application No. 18778376. The invention includes a passage casing with air intake and outlet, a chamber for gas flow and accumulation, a blower, and noise reduction elements including a ventilation component, intake pipe, and flexible component.