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. 06, 2010
Filed:
Jan. 05, 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, Berlin, 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, Berlin, DE;
BASF AG, , DE;
Abstract
Composite membranes comprising at least one porous substrate layer and at least one microporous separation layer, comprising at least one zeolite of the MFI type, are described, the separation layer being produced by a hydrothermal synthesis in which the molar ratio of silicon to aluminum is greater than 120 and the separation layer contains less than 10% by weight of aluminum in elemental or chemically bound form in a zone of at least 100 nm adjacent to the separation layer.