US Patent Issued to Essilor Laboratories of America on March 25 for "Anti-soiling coating for an ophthalmic lens" (California Inventor)

ALEXANDRIA, Va., March 26 -- United States Patent no. 12,259,523, issued on March 25, was assigned to Essilor Laboratories of America Inc. (Dallas).

"Anti-soiling coating for an ophthalmic lens" was invented by Prashant Santan (San Diego).

According to the abstract* released by the U.S. Patent & Trademark Office: "A hydrophobic and/or oleophobic coating system for an ophthalmic lens having increased effective thickness and water contact angle. In one embodiment, the hydrophobic and/or oleophobic coating system comprises an anti-reflective coating applied to an ophthalmic lens, the anti-reflective coating comprising alternating layers of high and low index materials with an outer layer of silicon dioxide having exposed hydroxyl groups. A h...