US Patent Issued to KOENIG & BAUER on April 8 for "Security document including a transparent window formed in the substrate thereof" (Swiss, Dutch Inventors)

ALEXANDRIA, Va., April 9 -- United States Patent no. 12,269,286, issued on April 8, was assigned to KOENIG & BAUER AG (Wurzburg, Germany).

"Security document including a transparent window formed in the substrate thereof" was invented by Arnaud Crassous (La Tour-de-Peilz, Switzerland), Robert Stewart (La Tour-de-Peilz, Switzerland) and Robert Stierman (Alphen aan den Rijn, Netherlands).

According to the abstract* released by the U.S. Patent & Trademark Office: "A security document includes a substrate having a transparent window formed in the substrate. A micro-optical structure including microlenses is arranged on one side of the substrate. A first print image is arranged on the other side of the substrate, opposite the micro-optical str...