ALEXANDRIA, Va., July 30 -- United States Patent no. 12,371,768, issued on July 29, was assigned to CONSTELLIUM ISSOIRE (Issoire, France) and CONSTELLIUM VALAIS SA (LTD) (Sierre, France).
"Aluminum alloy precision plates" was invented by Sylvie Arsene (Voreppe, France), Petar Ratchev (Voiron, France), Nicolas Calabretto (Veyras, Switzerland) and Christophe Jaquerod (Noes, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to plates with a thickness of between 8 and 50 mm and made from aluminum alloy with a composition, as % by weight, Si: 0.7-1.3; Mg: 0.6-1.2; Mn: 0.65-1.0; Fe: 0.05-0.35; at least one element selected from Cr: 0.1-0.3 and Zr: 0.06-0.15; Tigreater than0.1...