US Patent Issued to CONSTELLIUM NEUF-BRISACH on Jan. 13 for "Method of making 6XXX aluminium sheets with high surface quality" (French Inventors)

ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,522,908, issued on Jan. 13, was assigned to CONSTELLIUM NEUF-BRISACH (Biesheim, France).

"Method of making 6XXX aluminium sheets with high surface quality" was invented by Laurent Boissonnet (Voiron, France), Jean-Philippe Masse (Grenoble, France) and Gilles Guiglionda (Seyssinet-Pariset, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention concerns a method for producing a 6xxx series aluminium sheet comprising the steps of homogenizing an ingot made from a 6XXX series aluminium alloy; cooling the homogenized ingot with a cooling rate in a range of from 150deg C./h to 2000deg C./h directly to the hot rolling starting temperature; hot rol...