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. 16, 2004
Filed:
Aug. 06, 2001
Applicant:
Inventors:
Erik Lindgren, Bohus, SE;
Sten Frölich, Askim, SE;
Michael Persson, Västra Frölunda, SE;
Barbro Magnusson, Ytterby, SE;
Assignee:
Akzo Nobel N.V., Arnhem, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 1/705 ; D21H 1/724 ; D21H 1/733 ; D21H 2/114 ;
U.S. Cl.
CPC ...
D21H 1/705 ; D21H 1/724 ; D21H 1/733 ; D21H 2/114 ;
Abstract
A process for sizing paper comprising adding to an aqueous suspension containing cellulosic fibres, and optional fillers, a sizing dispersion comprising a polymer having an aromatic group, and a sizing promoter comprising a polymer having an aromatic group, wherein the sizing dispersion and the sizing promoter are added separately to the aqueous suspension.