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:
Apr. 16, 2002
Filed:
Mar. 15, 2000
Applicant:
Inventors:
Gunar V. Laivins, Vaudreuil, CA;
Marco Polverari, Montreal, CA;
Assignee:
Pulp and Paper Reserch Institute of Canada, Pointe Claire, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 2/106 ; D21H 2/110 ; D21H 1/734 ;
U.S. Cl.
CPC ...
D21H 2/106 ; D21H 2/110 ; D21H 1/734 ;
Abstract
A process is disclosed for the production of paper and paper-like products from a suspension of papermaking materials to which poly(ethylene oxide) and a phenolic type cofactor which may be produced by a Williamson synthesis from a resin, are added to improve the retention of fibers, of fines, of dispersed extractives and of fillers during the processes of water removal for the manufacturing of paper.