ALEXANDRIA, Va., July 3 -- United States Patent no. 12,344,024, issued on July 1, was assigned to VIAVI SOLUTIONS INC. (Chandler, Ariz.).
"Optical security element" was invented by Vladimir P. Raksha (Santa Rosa, Calif.) and Cornelis Jan Delst (Fairfax, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An assembly including a first magnet; a substrate positioned above the first magnet, and having a surface for receiving a composition including a plurality of magnetizable platelets; and a second magnet, positioned above the substrate is disclosed. The assembly can be used in a method of making an optical security element. The optical security element and the method of making the optical security element a...