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:
Mar. 28, 2006
Filed:
Aug. 31, 2002
Applicants:
Robin R. Kilgannon, New City, NY (US);
Robert J. Kane, Sartell, MN (US);
Eileen M. Joy, Armonk, NY (US);
Anil K. Dewan, Monroe, NY (US);
Inventors:
Robin R. Kilgannon, New City, NY (US);
Robert J. Kane, Sartell, MN (US);
Eileen M. Joy, Armonk, NY (US);
Anil K. Dewan, Monroe, NY (US);
Assignee:
International Paper Co., Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21B 1/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
This invention relates to an improved process for manufacturing bleached thermomechanical aspen pulp having reduced yellow after treatment with aluminum based chemicals such as alum which are used in paper making processes. In this improved process the pulp is washed prior to, after or between the bleaching stages or a combination of the foregoing.