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. 04, 2012
Filed:
Sep. 18, 2009
Applicants:
Andreas Hübner, Unna, DE;
Elena Gonzalez Diaz, Blieskastel, DE;
Michael Frania, Friedrichsthal, DE;
Inventors:
Assignee:
Souzer Chemtech GmbH, Linden, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01D 71/38 (2006.01); B01D 61/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A composite membrane is provided for the separation of water with at least one separation layer of cross-linked polyvinyl alcohol, with the separation layer being subjected in a separate process step to a post-crosslinking operation with an acid or an acid-releasing compound and at least one dialdehyde.