ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,420,531, issued on Sept. 23, was assigned to SAINT-GOBAIN ISOVER (Courbevoie, France).
"Panel for air-conditioning ducts" was invented by Maria Luisa Perez (Madrid), Alfonso Diez (Madrid), Mariano Rico (Madrid) and Gregorio Lopez (Madrid).
According to the abstract* released by the U.S. Patent & Trademark Office: "A panel for self-supporting ducts, in particular air-conditioning ducts, made up of a core of mineral wool, covered on its external face with an exterior covering joined to the external surface of the core, the exterior covering including a sheet of aluminum and the sheet of aluminum being the outermost sheet of the exterior stack, wherein the sheet of aluminum exhibits, a...