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:
Nov. 03, 2015
Filed:
Nov. 04, 2010
Applicants:
Isto Heiskanen, Imatra, FI;
Lars Axrup, Hammarö, FI;
Risto Laitinen, Imatra, FI;
Inventors:
Assignee:
Stora Enso OYJ, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 19/34 (2006.01); D21H 19/18 (2006.01); D21H 19/52 (2006.01); D21H 19/54 (2006.01); D21H 27/30 (2006.01);
U.S. Cl.
CPC ...
D21H 19/34 (2013.01); D21H 19/18 (2013.01); D21H 19/52 (2013.01); D21H 19/54 (2013.01); D21H 27/30 (2013.01); Y10T 428/31982 (2013.01);
Abstract
The present invention relates to a process for the production of a paper or paperboard comprising at least two plies wherein microfibrillated cellulose is added to the surface of a first ply and the other ply is attached to the first ply so that the microfibrillated cellulose located in between the plies. The invention further relates to a paper or board produced according to the method.