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. 06, 2001
Filed:
Dec. 15, 1998
Applicant:
Inventor:
Alain Serres, Reims, FR;
Assignee:
E & M Lamort, Vitry, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21B 1/08 ;
U.S. Cl.
CPC ...
D21B 1/08 ;
Abstract
The method for de-inking paper pulp produced by the reduction to pulp, with water, of old papers of various qualities according to which a stream of air bubbles (C) is sent through the flow (E,, S,, E,, S,) of pulp at least once, is characterized by the fact that a countercurrent of water (E,) is sent into the stream of de-inking air bubbles after said bubbles have passed through the pulp and become laden with ink particles so that the countercurrent releases the particles (fibers, fines, fillers) borne along by these de-inking bubbles and carries them away.