ALEXANDRIA, Va., June 16 -- United States Patent no. 12,304,230, issued on May 20, was assigned to Koenig & Bauer Banknote Solutions SA (Lausanne, Switzerland).
"Process for preparing polymeric security articles" was invented by Michael Blesovsky (Burford, Great Britain), Johannes Schaede (Wurzburg, Germany) and Robert Stewart (La Tour de Peilz, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "There is described a method of manufacturing a security article, said method comprising the steps of: introducing into an offset printing device a transparent film comprising a non-fibrous substrate layer of regenerated cellulose; disposing an opacification layer on at least a portion of at least one surface ...