ALEXANDRIA, Va., July 23 -- United States Patent no. 12,365,620, issued on July 22, was assigned to Apple Inc. (Cupertino, Calif.).
"Patterned asymmetric chemical strengthening" was invented by James R. Wilson (Cupertino, Calif.), Christopher D. Jones (Los Altos, Calif.), Christopher C. Bartlow (Menlo Park, Calif.) and Aidan R. Doan (Cupertino, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A glass sheet having asymmetric chemical strengthening is disclosed and described. The examples described herein are directed to a cover glass for an electronic device and other glass components that may be used as enclosure elements or may form an enclosure. Within the glass component, localized compressive stress...