ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,579, issued on March 31, was assigned to Polyvantis GmbH (Weiterstadt, Germany).
"Laser engravable labels" was invented by Kim Struwe (Frankfurt am Main, Germany), Markus Parusel (Messel, Germany), Ghirmay Seyoum (Egelsbach, Germany), Claude Guenanten (Darmstadt, Germany) and Helmut Haering (Otzberg, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "Coextruded acrylic foils made from impact-modified polyalkyl (meth)acrylates and laser engravable labels containing these foils. The coextruded acrylic foils are designed for labelling by a laser and contain a contrast layer having at least one inorganic filler and an engraving layer arranged on th...