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:
Jul. 15, 2014
Filed:
Dec. 14, 2005
Anton Esser, Limburgerhof, DE;
Hans-joachim Haehnle, Neustadt, DE;
Tibor Adalbert Von Vadkerthy, Singapore, SG;
Anton Esser, Limburgerhof, DE;
Hans-Joachim Haehnle, Neustadt, DE;
Tibor Adalbert Von Vadkerthy, Singapore, SG;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
A process for producing paper, board and cardboard in the presence of an aqueous slurry of components comprising finely divided fillers coated at least partly with water-soluble amphoteric copolymers, which involves adding, further to the aqueous slurry of components comprising finely divided fillers, at least one cationic and/or amphoteric polymer comprising as structural element no esters of unsaturated carboxylic acids with quaternized amino alcohols to the fiber suspension prior to sheet forming.