US Patent Issued to Essilor International on March 18 for "Method of preparing thick laminate wafers for wafer thermoforming and injection molding" (Texas Inventors)

ALEXANDRIA, Va., March 19 -- United States Patent no. 12,251,897, issued on March 18, was assigned to Essilor International (Charenton-le-pont, France).

"Method of preparing thick laminate wafers for wafer thermoforming and injection molding" was invented by Ahmed Drammeh (Dallas), Eric Begg (Dallas), Zbigniew Tokarski (Dallas) and Peiqi Jiang (Dallas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of forming an ophthalmic laminate lens, includes: forming a planar laminate by adhering a first polycarbonate layer to a first side of a thermoplastic elastomer layer, and adhering a second polycarbonate layer to a second side of the thermoplastic elastomer layer, the first polycarbonate layer having a thi...