ALEXANDRIA, Va., April 7 -- United States Patent no. 12,595,368, issued on April 7, was assigned to Alcon Inc. (Fribourg, Switzerland).
"UV/HEVL-filtering contact lenses" was invented by Frank Chang (Cumming, Ga.), Troy Vernon Holland (Suwanee, Ga.), Adam K. Sniady (Lilburn, Ga.) and Houliang Tang (Cumming, Ga.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Described herein is UV/HEVL-absorbing contact lens of the invention comprises a bulk hydrogel material that comprises repeating units of at least one UV-absorbing vinylic monomer, repeating units of at least one UV/HEVL-absorbing vinylic monomer, and derivatives of a reactive Cu(II)-porphyrin present in selected amounts and at a selected ratio. A UV/HEVL-...