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:
Oct. 29, 2019
Filed:
Feb. 16, 2016
Applicant:
Kemira Oyj, Helsinki, FI;
Inventors:
Chen Lu, Marietta, GA (US);
Junhua Chen, Mableton, GA (US);
Clay Campbell, Easton, MD (US);
Scott Rosencrance, Douglasville, GA (US);
Jenna Sue Rabideau, Rydal, GA (US);
Assignee:
KEMIRA OYJ, Helsinki, FI;
Primary Examiner:
Int. Cl.
CPC ...
D21H 17/37 (2006.01); D21H 17/06 (2006.01); D21H 17/64 (2006.01); D21H 17/65 (2006.01); D21H 21/20 (2006.01); D21H 17/56 (2006.01); D21H 23/10 (2006.01); D21H 23/16 (2006.01); D21H 23/22 (2006.01); D21H 23/66 (2006.01);
U.S. Cl.
CPC ...
D21H 17/375 (2013.01); D21H 17/06 (2013.01); D21H 17/56 (2013.01); D21H 17/64 (2013.01); D21H 17/65 (2013.01); D21H 21/20 (2013.01); D21H 23/10 (2013.01); D21H 23/16 (2013.01); D21H 23/22 (2013.01); D21H 23/66 (2013.01);
Abstract
A method for manufacturing paper is disclosed. A pulp slurry is produced, a paper sheet is formed from the slurry, an aldehyde functionalized polymer or polymers is added to the slurry before and/or after sheet formation, and a water soluble acid is added on the paper sheet.