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. 07, 2015
Filed:
Nov. 01, 2011
Applicant:
Keld Johansen, Frederikssund, DK;
Inventor:
Keld Johansen, Frederikssund, DK;
Assignee:
Haldor Topsoe A/S, Lyngby, DK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 21/00 (2006.01); B01J 23/00 (2006.01); B01J 25/00 (2006.01); B01J 29/00 (2006.01); B01J 23/10 (2006.01); B01J 37/02 (2006.01); B01J 23/30 (2006.01); B01J 37/00 (2006.01); F01N 3/023 (2006.01); B01D 53/94 (2006.01);
U.S. Cl.
CPC ...
B01J 37/0215 (2013.01); B01D 53/9418 (2013.01); B01D 53/944 (2013.01); B01D 53/9463 (2013.01); B01D 2255/2065 (2013.01); B01D 2255/20738 (2013.01); B01D 2255/20761 (2013.01); B01D 2255/20776 (2013.01); B01D 2255/407 (2013.01); B01D 2255/50 (2013.01); B01D 2255/9155 (2013.01); B01J 23/10 (2013.01); B01J 23/30 (2013.01); B01J 37/0036 (2013.01); F01N 3/023 (2013.01); F01N 2510/065 (2013.01);
Abstract
Method for the preparation of a catalysed particulate filter and a particulate filter. The method comprises the steps of a) providing a catalyst wash coat with a first catalyst active in burning off of soot and a second catalyst active in selective catalytic reduction of nitrogen oxides; b) coating a particulate filter body with the catalyst wash coat on the dispersion side and the permeate side of the filter body and within partition walls of the filter body; and c) drying and heat treating the coated filter body to obtain the catalysed particulate filter.