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:
Feb. 14, 2017
Filed:
Nov. 07, 2014
Applicant:
Ecolab Usa Inc., St. Paul, MN (US);
Inventors:
Weiguo Cheng, Naperville, IL (US);
Mei Liu, Plainfield, IL (US);
Gary S. Furman, St. Charles, IL (US);
Robert M. Lowe, Chicago, IL (US);
Assignee:
ECOLAB USA INC., St. Paul, MN (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
D21H 17/37 (2006.01); D21H 21/18 (2006.01); D21H 17/28 (2006.01); D21H 23/14 (2006.01);
U.S. Cl.
CPC ...
D21H 17/375 (2013.01); D21H 17/28 (2013.01); D21H 21/18 (2013.01); D21H 23/14 (2013.01);
Abstract
The invention provides methods and compositions for increasing the dry strength of paper. The invention utilizes a tailored strength agent whose size and shape is tailored to fit into the junction points between flocs of a paper sheet. The strength agents is in contact with the slurry for just enough time to collect at the junction points but not so much that it can migrate away from there.