ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,391,599, issued on Aug. 19, was assigned to Nippon Sheet Glass Co. Ltd. (Tokyo).
"Glass composition for chemical strengthening and chemically strengthened glass article" was invented by Akira Kitayama (Osaka, Japan) and Junji Kurachi (Hyogo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a glass composition for chemical strengthening, the glass composition having a high alkali resistance and being suitable for achieving both the surface compressive stress and the compressive stress layer depth. The glass composition according to the present disclosure includes, as components, in mol %: 60 to 80% SiO2; 1 to 5% Al2O3;...