ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,383,770, issued on Aug. 12, was assigned to AVIATION WORKS LTD (London).
"Ventilation apparatus and mask" was invented by Marc Studer (Lucerne, Switzerland), Gunnar Jansen (Bulach, Switzerland), Tim Wakeford (London) and Rob Boyle (London).
According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided an apparatus for preparing a ventilation gas mixture that comprises a gas mixing device, a first gas feed arranged to supply a first gas to the gas mixing device, an air inlet configured to receive exhaled air from a person, a gas reservoir arranged to store carbon dioxide from the air received in the air inlet and further arranged to supply the stored ca...