US Patent Issued to Stora Enso on Oct. 6 for "Method for fractionation of highly refined cellulose" (Finnish Inventors)

ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,753,551, issued on Oct. 6, was assigned to Stora Enso OYJ (Helsinki).

"Method for fractionation of highly refined cellulose" was invented by Isto Heiskanen (Imatra, Finland), Kaj Backfolk (Lappeenranta, Finland), Jukka Kankkunen (Imatra, Finland) and Anna Kauppi (Lappeenranta, Finland).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a method for fractionation of a highly refined cellulose pulp into a fine fraction and coarse fraction, said method comprising: a) providing a highly refined cellulose pulp suspension comprising highly refined cellulose pulp having a Schopper-Riegler (SR) number in the range of 40-98 as determin...