ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,713, issued on Feb. 3, was assigned to DE LA RUE INTERNATIONAL Ltd. (Basingstoke, Great Britain).

"Security elements and method of manufacture thereof" was invented by Brian Holmes (Basingstoke, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A security element including a first layer having a first surface, an array of image regions across the surface, each including at least first and second sub-regions, a first array of plasmonic nanostructures in or on the surface across the first sub-regions, defining in each a corresponding portion of a first image, a second array across the second sub-regions, defining in each a corresponding port...