ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,447,738, issued on Oct. 21, was assigned to Canon Production Printing Holding B.V. (Venlo, Netherlands).
"Device and method for cleaning exhaust air" was invented by Stefan Rohl (Munich), Andreas Geishauser (Munich), Revdin Dedic (Markt Schwaben, Germany) and Fabien Ferron (Munich).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a device for cleaning exhaust air from a printing device by means of a heat exchanger. The device is configured to operate the heat exchanger in a standard phase such that an output temperature of the exhaust air exhibits a standard value such that hydrocarbons are condensed out of the exhaust air. The device is also c...