ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,534,401, issued on Jan. 27, was assigned to Apple Inc. (Cupertino, Calif.).
"Asymmetric chemical strengthening" was invented by Victor Luzzato (Santa Clara, Calif.), Christopher D. Prest (San Francisco), Dale N. Memering (Langhome, Pa.) and Matthew S. Rogers (San Jose, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Asymmetrically strengthened glass articles, methods for producing the same, and use of the articles in portable electronic device is disclosed. The asymmetrically strengthened glass articles include glass articles having a deeper compressive stress layer in a thicker portion of the glass article. Using a budgeted amount of compressive ...