US Patent Issued to SICPA HOLDING on Feb. 4 for "Method of designing a light-redirecting surface of a caustic layer, an optical security element comprising the designed light-redirecting surface of the caustic layer, a marked object, use and method of authenticating the object" (Swiss Inventors)

ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,214,612, issued on Feb. 4, was assigned to SICPA HOLDING SA (Prilly, Switzerland).

"Method of designing a light-redirecting surface of a caustic layer, an optical security element comprising the designed light-redirecting surface of the caustic layer, a marked object, use and method of authenticating the object" was invented by Andrea Callegari (Chavannes-pres-Renens, Switzerland), Mathieu Gillieron (Cossonay-Ville, Switzerland) and Oscar De Feo (Lausanne, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a method of designing a refractive transparent or partially transparent light-redirecting surface, or a reflective li...