ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,435,472, issued on Oct. 7, was assigned to KEMIRA OYJ (Helsinki).
"Surface size composition and its use" was invented by Anneli Lepo (Espoo, Finland) and Paula Hirsila (Espoo, Finland).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a surface size composition for surface sizing of paper, board, or the like. The composition comprises at least an aluminium compound and an anionic lignin-carbohydrate complex."
The patent was filed on Sept. 16, 2021, under Application No. 18/024,622.
*For further information, including images, charts and tables, please visit: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2F...