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:
Aug. 21, 2001
Filed:
Jul. 30, 1998
Applicant:
Inventors:
Klaus-Viktor Peinemann, Geestacht, DE;
Detlev Iritsch, Hamburg, DE;
Ernst-Moritz Bellingen, Hamburg, DE;
Michael Deppe, Kempen, DE;
Michael Schossig-Tiedemann, Schwsrzenbek, DE;
Assignee:
GKSS-Forschungszentrum Geesthacht GmbH, Geesthacht, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 2/706 ;
U.S. Cl.
CPC ...
B32B 2/706 ;
Abstract
In a composite membrane for the separation of water vapors from gases, the membrane comprising a microporous support membrane, a non-porous separation layer based on an originally water soluble cellulose derivative which was made water insoluble is disposed on the support membrane by immersing the support membrane in a water containing bath including a cellulose derivative and the separation layer is then cross-linked with a dialdehyde to render it water insoluble.