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. 21, 2009
Filed:
Aug. 08, 2002
Harald Klein, Bessenbach, DE;
Ulrich Neuhausen, Kahl am Main, DE;
Egbert Lox, Hochwaldhauser, DE;
Jürgen Gieshoff, Biebergemünd, DE;
Thomas Kreuzer, Karben, DE;
Harald Klein, Bessenbach, DE;
Ulrich Neuhausen, Kahl am Main, DE;
Egbert Lox, Hochwaldhauser, DE;
Jürgen Gieshoff, Biebergemünd, DE;
Thomas Kreuzer, Karben, DE;
Umicore AG & Co. KG, Hanau-Wolfgang, DE;
Abstract
The present invention relates to a catalyst for the purification of exhaust gases from an internal combustion engine, which comprises a catalytically active coating on an inert ceramic or metal honeycomb body, said coating comprising at least one platinum group metal selected from the group consisting of platinum, palladium, rhodium and iridium on a fine, oxidic support material. As an oxidic support material, the catalyst comprises a low-porosity material on the basis of silicon dioxide that comprises aggregates of essentially spherical primary particles having an average particle diameter of between 7 and 60 nm.