ALEXANDRIA, Va., June 9 -- United States Patent no. 12,289,804, issued on April 29, was assigned to Eberspacher Catem GmbH & Co. KG (Herxheim, Germany).
"Electric heating device" was invented by Kai-Fabian Burkle (Hinterweidenthal, Germany) and Stefan Plewnia (Karlsruhe, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electric heating device for a motor vehicle has a first housing part which surrounds a first circulation chamber and a second housing part which surrounds a second circulation chamber. The first and second circulation chambers abut against each other. A PTC heating device is interposed between the first and second housing parts. The PTC heating device comprises a first cover element c...