US Patent Issued to CONSTELLIUM ISSOIRE on Sept. 23 for "Thin sheets made of aluminium-copper-lithium alloy for aircraft fuselage manufacture" (French Inventor)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,586, issued on Sept. 23, was assigned to CONSTELLIUM ISSOIRE (Issoire, France).

"Thin sheets made of aluminium-copper-lithium alloy for aircraft fuselage manufacture" was invented by Pablo Lorenzino (Saint Cassien, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention concerns a method for manufacturing a thin sheet made of aluminium-based alloy comprising, in percent by weight, 2.3 to 2.7% Cu, 1.3 to 1.6% Li, 0.2 to 0.5% Mg, 0.1 to 0.5% Mn, 0.01 to 0.15% Ti, a quantity of Zn less than 0.3, a quantity of Fe and of Si less than or equal to 0.1% each, and unavoidable impurities at a content less than or equal to 0.05% by weight each and...