ALEXANDRIA, Va., June 4 -- United States Patent no. 12,319,989, issued on June 3, was assigned to Kaiser Aluminum Fabricated Products LLC (Franklin, Tenn.).
"High strength press quenchable 7XXX alloy" was invented by David J. Shoemaker (Heath, Ohio), Timothy K. Fargo (Southfield, Mich.), Walter Gerberick (Westerville, Ohio) and Robert A. Matuska (Heath, Ohio).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention is directed to a 7xxx series aluminum alloy composition comprising, consisting essentially of, or consisting of (by weight %) of 1.0-1.8% Mg; 7.0-8.3% Zn; 0.10-0.25% Zr; with up to 0.80% Cu and allowable impurities of 0.3% Si, 0.4% Fe, 0.4% Mn, and 0.1% Ti, with other elements restricte...