ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,390, issued on Dec. 30, was assigned to SAINT-GOBAIN GLASS FRANCE (Courbevoie, France).
"Substrate provided with a stack having thermal properties" was invented by Paul Jacquet (Pantin, France), Veronique Rondeau (Asnieres sur Seine, France) and Elsa Perrin (Paris).
According to the abstract* released by the U.S. Patent & Trademark Office: "A transparent substrate provided with a stack of thin layers includes successively, from the substrate, an alternating arrangement of at least three functional metal layers and four antireflective coatings, each antireflective coating including at least one dielectric layer; the thicknesses and the nature of the different layers being adapted ...