ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,419,987, issued on Sept. 23.
"Compression-based portable air treatment systems and methods" was invented by John A. Cadwell (Richland, Wash.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A portable air treatment system configured to be carried by an individual and deliver air, via a mask, to the individual, is provided. The system includes an air inlet allowing atmospheric air to enter at an air flow rate ranging between 2 liters/min to 10 liters/min, an air compression system connected with the air inlet for compressing the incoming air, thereby increasing the temperature of the air to a minimum temperature of 170deg C., a hot air chamber connected w...