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:
May. 12, 2015
Filed:
Dec. 05, 2013
Applicant:
Hercules Incorporated, Wilmington, DE (US);
Inventors:
Susan M. Ehrhardt, Haddonfield, NJ (US);
Kyle Bottorff, Newark, DE (US);
Assignee:
Solenis Technologies, L.P., Wilmington, DE (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
D21H 11/00 (2006.01); D21H 19/10 (2006.01); D21H 17/17 (2006.01); D21H 17/45 (2006.01); D21H 21/16 (2006.01);
U.S. Cl.
CPC ...
D21H 19/10 (2013.01); D21H 17/17 (2013.01); D21H 17/45 (2013.01); D21H 21/16 (2013.01);
Abstract
This technology relates to a method of sizing paper through the use of an aqueous solution of ketene dimer and vinylamine-containing polymers. It also relates to the stability of the ketene dimer/polyvinylamine solution.