ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,402,212, issued on Aug. 26, was assigned to Eberspacher Catem GmbH & Co. (Herxheim, Germany).
"PTC heating cell" was invented by Kurt Walz (Hagenbach, Germany), Stefan Plewnia (Karlsruhe, Germany) and Sascha Barner (Hagenbach, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A PTC heating cell has a cuboid-shaped PTC element and two metallizations electrically separated from each other and provided on the surface of the PTC element for the introduction of current to the PTC element. The two metallizations are provided as strips formed over an entire longitudinal extension (L) of the PTC element on diagonally oppositely disposed surface sections of...