US Patent Issued to VIAVI SOLUTIONS on April 15 for "Security pigment and optical security element" (California Inventors)

ALEXANDRIA, Va., June 5 -- United States Patent no. 12,275,267, issued on April 15, was assigned to VIAVI SOLUTIONS INC. (Chandler, Ariz.).

"Security pigment and optical security element" was invented by Paul Thomas Kohlmann (Windsor, Calif.), 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 article including a substrate; and a composition on the substrate, the composition including a liquid medium, and a semi-transparent magnetic pigment including a semi-transparent, metallic, magnetic material and a dielectric material used as a light interference cavity is disclosed, A method of making the article is also disclosed."

The pat...