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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.:

US 9057310 B1

PDFFull Text
Date of Patent:
Jun. 16, 2015

Filed:

Nov. 21, 2013

Catalysed soot filter for treating the exhaust gas of a compression ignition engine

Applicant:

Johnson Matthey Public Limited Company, London, GB;

Inventors:

David Bergeal, Ware, GB;

Andrew Francis Chiffey, Ware, GB;

John Benjamin Goodwin, Royston, GB;

Daniel Hatcher, Royston, GB;

Francois Moreau, Cambridge, GB;

Agnes Raj, Royston, GB;

Raj Rao Rajaram, Slough, GB;

Paul Richard Phillips, Royston, GB;

Cathal Prendergast, Gamlingay, GB;

Gavin Michael Brown, Saffron Walden, GB;

Assignee:

Johnson Matthey Public Limited Company, London, GB;

Attorney:

Kevin M. Carroll

Primary Examiner:

Cam N Nguyen

Int. Cl.
CPC ...
B01D 50/00 (2006.01); B01D 53/34 (2006.01); B01D 53/56 (2006.01); B01D 53/94 (2006.01); B01J 8/02 (2006.01); C01B 21/00 (2006.01); C01B 23/00 (2006.01); C01B 25/00 (2006.01); C01B 31/00 (2006.01); C01B 33/00 (2006.01); C01B 35/00 (2006.01); C01G 28/00 (2006.01); C01G 30/00 (2006.01); F01N 3/10 (2006.01); B01J 21/00 (2006.01); B01J 23/00 (2006.01); B01J 23/02 (2006.01); B01J 23/06 (2006.01); B01J 23/08 (2006.01); B01J 23/10 (2006.01); B01J 23/40 (2006.01); B01J 23/42 (2006.01); B01J 23/44 (2006.01); B01J 23/56 (2006.01); B01J 23/58 (2006.01); B01J 21/04 (2006.01); C01B 31/08 (2006.01); F01N 3/28 (2006.01); F01N 3/20 (2006.01); B01J 37/02 (2006.01); B01J 35/00 (2006.01); B01J 29/74 (2006.01); B01J 35/02 (2006.01); B01J 37/00 (2006.01);
U.S. Cl.
CPC ...
F01N 3/2807 (2013.01); B01D 53/945 (2013.01); B01J 23/58 (2013.01); F01N 3/20 (2013.01); B01J 37/0244 (2013.01); B01D 53/944 (2013.01); F01N 3/103 (2013.01); F01N 3/2828 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/1023 (2013.01); B01D 2255/2092 (2013.01); B01D 2255/50 (2013.01); B01D 2255/908 (2013.01); B01D 2255/912 (2013.01); B01D 2258/012 (2013.01); B01D 2255/204 (2013.01); B01D 2255/2042 (2013.01); B01D 2255/2065 (2013.01); B01D 2255/20715 (2013.01); B01D 2255/902 (2013.01); B01D 2255/9155 (2013.01); B01J 37/0246 (2013.01); B01J 37/0248 (2013.01); B01J 35/0006 (2013.01); B01J 37/0205 (2013.01); B01J 23/002 (2013.01); B01J 29/7415 (2013.01); B01J 35/023 (2013.01); B01J 37/0036 (2013.01); B01J 2523/00 (2013.01); F01N 2510/0684 (2013.01);
Abstract

A catalysed soot filter comprising an oxidation catalyst for treating carbon monoxide (CO) and hydrocarbons (HCs) in exhaust gas from a compression ignition engine disposed on a filtering substrate, wherein the oxidation catalyst comprises: a platinum group metal (PGM) component selected from the group consisting of a platinum (Pt) component, a palladium (Pd) component and a combination thereof; an alkaline earth metal component; a support material comprising a modified alumina incorporating a heteroatom component.

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