US Patent Issued to Alcon on Feb. 3 for "Method for making embedded hydrogel contact lenses" (Georgia, California Inventors)

ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,650, issued on Feb. 3, was assigned to Alcon Inc. (Fribourg, Switzerland).

"Method for making embedded hydrogel contact lenses" was invented by Jing Cheng (Anaheim, Calif.), Feng Jing (Snellville, Ga.) and Steve Yun Zhang (Sugar Hill, Ga.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for producing embedded hydrogel contact lenses comprises at least the following steps: obtaining an insert made of a crosslinked polymeric material comprising iniferter moieties covalently attached thereto; placing the insert in a female lens mold half; dosing an amount of a lens-forming composition to immerse the insert in the female lens mold half; closing ti...