US Patent Issued to CONSTELLIUM ROLLED PRODUCTS SINGEN GMBH & Co.KG on June 30 for "Aluminum-copper-lithium alloy thin sheets with improved toughness, and process for manufacturing an aluminum-copper-lithium alloy thin sheet" (French Inventors)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,668,863, issued on June 30, was assigned to CONSTELLIUM ROLLED PRODUCTS SINGEN GMBH & Co.KG (Singen, Germany).

"Aluminum-copper-lithium alloy thin sheets with improved toughness, and process for manufacturing an aluminum-copper-lithium alloy thin sheet" was invented by Helene Godin (La Buisse, France) and Erembert Nizery (Grenoble, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a method for manufacturing a thin sheet made from aluminum-based alloy comprising, as % by weight, 2.2 to 2.7% Cu, 1.3 to 1.6% Li, less than 0.1% Ag, 0.2 to 0.5% Mg, 0.1 to 0.5% Mn, 0.01 to 0.15% Ti, a quantity of Zn of less than 0.3, a quantity of...