ALEXANDRIA, Va., June 9 -- United States Patent no. 12,286,756, issued on April 29, was assigned to Stora Enso OYJ (Helsinki).
"Process for production of nano-coated substrate" was invented by Kaj Backfolk (Villmanstrand, Finland), Isto Heiskanen (Imatra, Finland) and Jukka Kankkunen (Imatra, Finland).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention is directed to a process for manufacturing a nano-coated pulp-based substrate comprising the steps of: a) providing a suspension comprising pulp, said pulp having Schopper Riegler value of at least 70deg; b) using the suspension of step a) to form a wet web; c) dewatering and/or drying the wet web to form a substrate; d) adding a first layer of...