ALEXANDRIA, Va., June 12 -- United States Patent no. 12,296,525, issued on May 13, was assigned to Digimarc Corp. (Beaverton, Ore.).
"Signaling arrangements employing molded thermoplastics" was invented by Tomas Filler (Beaverton, Ore.), Vojtech Holub (Portland, Ore.), Hugh L. Brunk (Portland, Ore.) and Ravi K. Sharma (Portland, Ore.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A thermoplastic resin, such as PET, is molded to define a 2D code signal, such as a digital watermark pattern. The mold can comprise an array of hole or spike features, some of which are directly vented to atmospheric pressure. A network of channels can link the other features to the directly-vented features, so all features are ven...