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:
Mar. 10, 2020
Filed:
Nov. 16, 2015
Applicant:
Novozymes A/s, Bagsvaerd, DK;
Inventors:
Henrik Lund, Bagsvaerd, DK;
Pedro Emanuel Garcia Loureiro, Soeborg, DK;
Jaroslav Slavik, New Brunswick, CA;
Assignee:
NOVOZYMES A/S, Bagsvaerd, DK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21C 5/00 (2006.01); D21C 9/10 (2006.01); D21C 9/14 (2006.01); D21C 9/16 (2006.01); D21C 9/00 (2006.01); D21C 3/02 (2006.01); D21C 9/153 (2006.01); D21C 9/147 (2006.01);
U.S. Cl.
CPC ...
D21C 5/005 (2013.01); D21C 3/02 (2013.01); D21C 5/00 (2013.01); D21C 9/00 (2013.01); D21C 9/14 (2013.01); D21C 9/153 (2013.01); D21C 9/16 (2013.01);
Abstract
The present invention relates to the removal of hemicelluloses from paper-grade alkaline pulp thereby upgrading the pulp e.g. into dissolving-grade pulp using a combination of enzyme treatment, hot caustic extraction and optionally one or more bleaching steps.