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:
Sep. 24, 2013
Filed:
Feb. 22, 2011
Rüdiger Funk, Niedernhausen, DE;
Thomas Pfeiffer, Boehl-Iggelheim, DE;
Matthias Weismantel, Jossgrund-Oberndorf, DE;
Stefan Blei, Mannheim, DE;
Wilfried Heide, Freinsheim, DE;
Volker Braig, Weinheim-Lützelsachsen, DE;
Thomas Gieger, Ludwigshafen, DE;
Andreas Brockmeyer, Alsbach-Hahnlein, DE;
Rüdiger Funk, Niedernhausen, DE;
Thomas Pfeiffer, Boehl-Iggelheim, DE;
Matthias Weismantel, Jossgrund-Oberndorf, DE;
Stefan Blei, Mannheim, DE;
Wilfried Heide, Freinsheim, DE;
Volker Braig, Weinheim-Lützelsachsen, DE;
Thomas Gieger, Ludwigshafen, DE;
Andreas Brockmeyer, Alsbach-Hahnlein, DE;
BASF SE, Ludwigshafen, DE;
Abstract
A process for producing water-absorbing polymer particles, wherein an aqueous polymer gel is dried in a forced-air belt drier on a circulating conveyor belt and the surface of the conveyor belt has a multitude of elevations or depressions which are suitable for restricting the mobility of the aqueous polymer gel in transverse direction.