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. 10, 2012
Filed:
Jan. 13, 2005
Stefan Bitterlich, Dirmstein, DE;
Hartwig Voβ, Frankenthal, DE;
Gunter Schuch, Ludwigshafen, DE;
Armin Diefenbacher, Germersheim, DE;
Manfred Noack, Berlin, DE;
Ronald Schäfer, Aalen, DE;
Ingolf Voigt, Jena, DE;
Hannes Richter, Hermsdorf, DE;
Jürgen Caro, Hanover, DE;
Stefan Bitterlich, Dirmstein, DE;
Hartwig Voβ, Frankenthal, DE;
Gunter Schuch, Ludwigshafen, DE;
Armin Diefenbacher, Germersheim, DE;
Manfred Noack, Berlin, DE;
Ronald Schäfer, Aalen, DE;
Ingolf Voigt, Jena, DE;
Hannes Richter, Hermsdorf, DE;
Jürgen Caro, Hanover, DE;
BASF SE, , DE;
Abstract
A method for producing membranes which contain at least one solid layer on one side of a porous substrate by treating the side of the support, which is to be coated, with a synthetic solution that forms the solid layer. The inventive method is characterized in that the space located behind the side of the porous support, which is not to be coated, is filled with an inert fluid during the production of the solid layer on the porous support, 'behind' being from the perspective of the support. The pressure and/or the temperature of the fluid is/are selected such that the synthetic solution is essentially prevented from entering in contact with the side of the porous support, which is not to be coated.