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:
Sep. 03, 2002
Filed:
Dec. 20, 2000
Applicant:
Inventors:
William J. Ward, Glen Ellyn, IL (US);
Andrew J. Dunham, DeKalb, IL (US);
Phillip W. Carter, Naperville, IL (US);
Andrei S. Zelenev, Oak Park, IL (US);
Assignee:
Nalco Chemical Company, Naperville, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 1/746 ; D21H 2/110 ;
U.S. Cl.
CPC ...
D21H 1/746 ; D21H 2/110 ;
Abstract
This invention concerns a method of increasing retention and drainage in a papermaking furnish comprising adding to the furnish an effective amount of a structurally rigid nonionic or anionic polymer.
Ward, William. (2002). Structurally rigid nonionic and anionic polymers as retention and drainage aids in papermaking (U.S. Patent No. 6444091). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6444091
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile