The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 15, 2014
Filed:
Jul. 02, 2010
Applicants:
Marianna Vehvilainen, Tampere, FI;
Taina Kamppuri, Tampere, FI;
Maarit Peltola, Helsinki, FI;
Ali Harlin, Kerava, FI;
Pertti Nousiainen, Tampere, FI;
Inventors:
Marianna Vehvilainen, Tampere, FI;
Taina Kamppuri, Tampere, FI;
Maarit Peltola, Helsinki, FI;
Ali Harlin, Kerava, FI;
Pertti Nousiainen, Tampere, FI;
Assignee:
Stora Enso OYJ, Helsinki, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21C 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for treating cellulosic fibers comprises mechanically pre-treating the fibers followed by treating the fibers with an enzyme and thereafter mixing the fibers with a solution comprising an alkali metal hydroxide followed by mechanically treating the fibers to form microfibrillated cellulose. In this way it is possible to produce microfibrillated cellulose (MFC) in an improved and energy efficient way.