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:
May. 03, 1994
Filed:
Feb. 08, 1993
Applicant:
Inventors:
Ansgar Behler, Bottrop, DE;
Rainer Hoefer, Duesseldorf, DE;
Klaus Hornfeck, Hettmann, DE;
Wolfgang von Rybinski, Duesseldorf, DE;
Assignee:
Henkel Kommanditgesellschaft auf Aktien, Duesseldorf, DE;
Primary Examiner:
Int. Cl.
CPC ...
D21C / ;
U.S. Cl.
CPC ...
162-7 ; 162-8 ;
Abstract
The invention relates to a process for the flotation of fillers from deinked waste paper in the presence of surfactants containing sulfonate groups.