ALEXANDRIA, Va., July 16 -- United States Patent no. 12,358,837, issued on July 15, was assigned to CORNING Inc. (Corning, N.Y.).
"Tough glass composite and method" was invented by Indrajit Dutta (Horseheads, N.Y.) and Nicholas James Smith (Port Matilda, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments of a glass substrate including an alkali-containing bulk and an alkali-depleted surface layer, including a substantially homogenous composition with at least 51 mol % Al2O3 are disclosed. In some embodiments, the alkali-depleted surface layer includes about 0.5 atomic % alkali or less. The alkali-depleted surface layer can be substantially free of hydrogen and/or crystallites. Methods for forming...