US Patent Issued to AGC on June 30 for "Glass and method for manufacturing glass" (Japanese Inventors)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,668,524, issued on June 30, was assigned to AGC Inc. (Tokyo).

"Glass and method for manufacturing glass" was invented by Mikio Nagano (Chiyoda-ku, Japan), Seiji Inaba (Chiyoda-ku, Japan), Rikiya Kado (Chiyoda-ku, Japan), Kiyoshi Tamai (Chiyoda-ku, Japan) and Yuha Kobayashi (Chiyoda-ku, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Glass contains, in mol percentage on an oxide basis, SiO2: 35% to 60%, B2O3: 0.8% to 8%, Al2O3: 6% to 21%, and MgO: 17% to 44%. Additionally, (MgO/Al2O3)less than=1 is satisfied, a measured Madelung constant m calculated by an expression (1A) is equal to or larger than 1.05, and a thermal expansion factor as a ratio of ...