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:
Jan. 28, 1997
Filed:
May. 16, 1995
Applicant:
Inventors:
Peter E Reed, Plainfield, IL (US);
Carol S Greer, Lisle, IL (US);
Assignee:
Nalco Chemical Company, Naperville, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21H / ; D21H / ;
U.S. Cl.
CPC ...
162166 ; 1621683 ; 162199 ; 162D / ;
Abstract
Pitch in paper mills is controlled by treating paper mill systems with a water soluble polymer which contains a lower alkyl N-vinyl amide or a hydrolyzed lower alkyl N-vinyl amide.