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. 27, 2021
Filed:
Jun. 27, 2017
Applicant:
Kemira Oyj, Helsinki, FI;
Inventors:
Leif Robertsén, Parainen, FI;
Veli-Matti Vuorenpalo, Espoo, FI;
Anna-Maija Perander, Espoo, FI;
Pentti Pekonen, Oulu, FI;
Jonas Konn, Espoo, FI;
Assignee:
KEMIRA OYJ, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21C 9/16 (2006.01); D21C 9/10 (2006.01);
U.S. Cl.
CPC ...
D21C 9/166 (2013.01); D21C 9/1036 (2013.01); D21C 9/16 (2013.01); D21C 9/163 (2013.01);
Abstract
The present invention relates to a process for treating pulp comprising a step, wherein the pulp is treated with distilled percarboxylic acid, such as distilled per-carboxylic acid (dPAA), and peroxide, such as hydrogen peroxide.