US Patent Issued to AGC on Dec. 30 for "Method of producing glass substrate having hole and glass laminate for annealing" (Japanese Inventors)

ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,508,672, issued on Dec. 30, was assigned to AGC INC. (Tokyo).

"Method of producing glass substrate having hole and glass laminate for annealing" was invented by Mamoru Isobe (Tokyo), Shigetoshi Mori (Tokyo) and Kohei Horiuchi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of producing a glass substrate having a hole is provided. The method includes preparing the glass substrate having a first surface and a second surface facing each other; forming a hole in the glass substrate with a laser; and annealing the glass substrate placed on a first support substrate having a thermal expansion coefficient whose difference from a thermal expansio...