ALEXANDRIA, Va., Aug. 18 -- United States Patent no. 12,710,567, issued on Aug. 18, was assigned to Essilor International (Charenton-le-Pont, France).
"Semi-finished lens, method and device for manufacturing an optical lens" was invented by Luis Castro Martinez (Charenton-le-Pont, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a semi-finished lens including a first optical surface including a surface design associated with a first reference system and a second optical surface to be manufactured, the first and second optical surfaces are connected by an external periphery surface, the semi-finished lens further including a reference element provided on the second optical surface and/or on ...