ALEXANDRIA, Va., March 3 -- United States Patent no. 12,565,057, issued on March 3, was assigned to THALES DIS FRANCE SAS (Meudon, France).
"Security elements in covers of secure article by ultrasonic welding" was invented by Taru Syrjanen (Vantaa, Finland) and Kristian Lappalainen (Espoo, Finland).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a secure article, preferably a multi-page article, comprising a front cover, a reverse cover, and at least one security element. The security element can be provided on, and/or, in the front cover and/or the reverse cover, and can be produced by ultrasonic welding. The security element comprises or consists of an optically variable element. Other embodiment...