US Patent Issued to Stora Enso on Feb. 3 for "Paper or paperboard coated with a foam coating layer comprising nanocellulose" (Finnish Inventors)

ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,440, issued on Feb. 3, was assigned to Stora Enso OYJ (Helsinki).

"Paper or paperboard coated with a foam coating layer comprising nanocellulose" was invented by Tuomo Hjelt (Helsinki) and Christiane Laine (Espoo, Finland).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to coated paper or paperboard comprising: a paper or paperboard substrate, and a solid closed cell foam coating layer disposed on a surface of said a paper or paperboard substrate, wherein said solid closed cell foam coating layer comprises a nanocellulose, and a foaming agent. The invention further relates to a food container, preferably a cup, comprising ...