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. 12, 2011
Filed:
Aug. 13, 2005
Marcus Pfeifer, Solingen, DE;
Markus Koegel, Speyer, DE;
Roger Staab, Freigericht, DE;
Pascal Adolph, Birstein, DE;
Yvonne Demel, Frankfurt, DE;
Tobias Kuhl, Hanau, DE;
Egbert Lox, Grebenhain, DE;
Thomas Kreuzer, Karben, DE;
Frank-walter Schuetze, Aschaffenburg, DE;
Marcus Pfeifer, Solingen, DE;
Markus Koegel, Speyer, DE;
Roger Staab, Freigericht, DE;
Pascal Adolph, Birstein, DE;
Yvonne Demel, Frankfurt, DE;
Tobias Kuhl, Hanau, DE;
Egbert Lox, Grebenhain, DE;
Thomas Kreuzer, Karben, DE;
Frank-Walter Schuetze, Aschaffenburg, DE;
Umicore AG & Co. KG, Hanau-Wolfgang, DE;
Abstract
The invention proposes a particulate filter having a catalytic coating which contains two catalysts arranged one behind the other. The first catalyst is located in the gas inlet region of the filter and contains a palladium/platinum catalyst. The second catalyst is arranged downstream of the first catalyst and preferably contains platinum alone as catalytically active component. The combination of these two catalysts provides the coated filter with a good ageing stability and resistance to sulphur poisoning.