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:
Jan. 17, 2012
Filed:
Jul. 15, 2005
Hans-joachim Haehnle, Neustadt, DE;
Anton Esser, Limburgerhof, DE;
Volker Braig, Weinheim-Luetzelsachsen, DE;
Rainer Blum, Mannheim, DE;
Peter Baumann, Boehl-Iggelheim, DE;
Jacques Dupuis, Ketsch, DE;
Josef Neutzner, Neustadt, DE;
Hans-Joachim Haehnle, Neustadt, DE;
Anton Esser, Limburgerhof, DE;
Volker Braig, Weinheim-Luetzelsachsen, DE;
Rainer Blum, Mannheim, DE;
Peter Baumann, Boehl-Iggelheim, DE;
Jacques Dupuis, Ketsch, DE;
Josef Neutzner, Neustadt, DE;
BASF SE, Ludwigshafen, DE;
Abstract
The present invention relates to an aqueous composition comprising at least one finely divided filler and at least one water-soluble amphoteric copolymer, a process for the preparation of such a composition and its use as an additive in the production of paper, cardboard and board.