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. 22, 2014
Filed:
Nov. 03, 2010
Applicants:
Ari Juppo, Vaasa, FI;
Ulf Stenbacka, Vaasa, FI;
Inventors:
Ari Juppo, Vaasa, FI;
Ulf Stenbacka, Vaasa, FI;
Assignee:
Kemira OYJ, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 17/25 (2006.01); D21H 17/44 (2006.01); D21H 21/10 (2006.01); D21H 17/37 (2006.01); D21H 21/52 (2006.01);
U.S. Cl.
CPC ...
D21H 21/10 (2013.01); D21H 17/44 (2013.01); D21H 17/37 (2013.01); D21H 17/25 (2013.01); D21H 17/375 (2013.01); D21H 21/52 (2013.01); Y10S 977/963 (2013.01);
Abstract
The invention relates to a process for the production of paper or board comprising: adding a retention system to a stream of stock entering a paper machine head box, directing the stream of stock to a wire, de watering the stream of stock on the wire to form a paper web, and drying the paper web, wherein the retention system comprises a water-soluble cationic polymer, and nanocellulose acting like a micro particle, wherein the nanocellulose is added in an amount of less than 1% as active substance based on dry solids weight of the stock.