US Patent Issued to Kemira on June 3 for "Composition and its use for use in manufacture of paper, board or the like" (Finnish Inventors)

ALEXANDRIA, Va., June 4 -- United States Patent no. 12,320,071, issued on June 3, was assigned to Kemira Oyj (Helsinki).

"Composition and its use for use in manufacture of paper, board or the like" was invented by Matti Hietaniemi (Espoo, Finland) and Asko Karppi (Espoo, Finland).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a composition for use in a manufacture of paper, board or the like. The composition comprises a mixture of cationic starch having amylopectin content of at least 85%, and an amphoteric polymeric structure comprising structural units originating from non-ionic monomers, preferably (meth)acrylamide, anionic groups and cationic groups, the polymeric structure compri...