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. 20, 2018
Filed:
Oct. 06, 2014
Applicant:
Ecolab Usa Inc., St. Paul, MN (US);
Inventors:
Bradley Benz, Parker, CO (US);
Paul F. Richardson, Pittsburgh, PA (US);
James L. Thomas, Heber Springs, AK (US);
Mei Liu, Plainfield, IL (US);
Robert M. Lowe, Chicago, IL (US);
Assignee:
ECOLAB USA INC., St. Paul, MN (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
D21H 17/38 (2006.01); D21H 23/24 (2006.01); D21H 17/37 (2006.01); D21H 17/18 (2006.01);
U.S. Cl.
CPC ...
D21H 17/38 (2013.01); D21H 17/18 (2013.01); D21H 17/375 (2013.01); D21H 23/24 (2013.01);
Abstract
The invention provides methods and compositions for increasing the strength of a paper sheet. The method involves adding to the paper sheet an amine containing polymer. The amine containing polymer interacts with materials such as GPAM or starch to make the paper stronger in terms including tensile strength, surface strength and bulk strength.