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. 04, 1995
Filed:
Nov. 29, 1993
Applicant:
Inventors:
Kaj Henricson, Kotka, FI;
Raimo Pitkanen, Kotka, FI;
Assignee:
A. Ahlstrom A Corporation of Finland, Osakeyhtio, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21C / ; B01D / ;
U.S. Cl.
CPC ...
162 52 ; 162 60 ;
Abstract
A method for washing a fibrous suspension. The fibrous suspension is dearated with a deaerating centrifugal pump as it is pumped into the washing zone. The washing water is also dearated with a deaerating centrifugal pump.