ALEXANDRIA, Va., April 2 -- United States Patent no. 12,263,555, issued on April 1, was assigned to AGC INC. (Tokyo).
"Glass article and method of producing glass article" was invented by Toru Momose (Tokyo), Osamu Sato (Shizuoka, Japan), Hirofumi Yamamoto (Shizuoka, Japan) and Nobuhiko Takeshita (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of producing a glass article includes holding a carrier having a circular shape, in which a glass substrate having a circular shape is retained, with an upper surface plate and a lower surface plate; and polishing the glass substrate by rotating the carrier with respect to the upper surface plate and the lower surface plate, to obtain the glass article. ...