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:
Nov. 27, 2001
Filed:
Oct. 17, 2000
Applicant:
Inventor:
Werner Witek, Appleton, WI (US);
Assignee:
Voith Sulzer Paper Technology North America, Inc., Appleton, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 1/114 ; D21B 1/32 ;
U.S. Cl.
CPC ...
D21H 1/114 ; D21B 1/32 ;
Abstract
A method of processing recycled waste paper includes pulping waste paper in a first drum pulper. White fibers are separated from the waste paper in a first screen drum. The white fibers are then processed by screening, cleaning, deinking and bleaching. The remaining waste paper is pulped within a second drum pulper. The brown fibers are separated from the waste paper in a second screen drum. The brown fibers are processed by screening, cleaning and bleaching.