ALEXANDRIA, Va., June 10 -- United States Patent no. 12,291,921, issued on May 6, was assigned to Nippon Sheet Glass Co. Ltd. (Tokyo).
"Depressurized multilayered glass panel" was invented by Akito Takeuchi (Tokyo), Tatsuhiro Nakazawa (Tokyo) and Atsushi Miki (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A depressurized multilayer glass panel 10 includes: a first glass plate 11; a second glass plate 12; a sealing portion forming an air gap portion 13 sealed in a depressurized state between the first glass plate 11 and the second glass plate 12; and a plurality of columns 16 disposed between the first glass plate 11 and the second glass plate 12, each column 16 including contact surfaces 21 in contact...