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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 9114385 B1

PDFFull Text
Date of Patent:
Aug. 25, 2015

Filed:

Dec. 21, 2011

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Applicants:

Robert James Brisley, Duxford, GB;

Kenneth David Camm, Letchworth Garden, GB;

Noelia Cortes Felix, Reading, GB;

Fiona-mairead Mckenna, Reading, GB;

Paul James Millington, Reading, GB;

Elizabeth Hazel Mountstevens, Royston, GB;

Daniel Swallow, Sandy, GB;

Inventors:

Robert James Brisley, Duxford, GB;

Kenneth David Camm, Letchworth Garden, GB;

Noelia Cortes Felix, Reading, GB;

Fiona-Mairead McKenna, Reading, GB;

Paul James Millington, Reading, GB;

Elizabeth Hazel Mountstevens, Royston, GB;

Daniel Swallow, Sandy, GB;

Assignee:

Johnson Matthey Public Limited Company, London, GB;

Attorney:

Kevin M. Carroll

Primary Examiner:

Cam N Nguyen

Int. Cl.
CPC ...
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); B01D 50/00 (2006.01); B01D 53/34 (2006.01); F01N 3/00 (2006.01); F23J 11/00 (2006.01); B01J 29/00 (2006.01); B01J 29/06 (2006.01); B01J 21/00 (2006.01); B01J 21/04 (2006.01); B01J 20/00 (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 23/32 (2006.01); B01J 23/42 (2006.01); B01J 23/44 (2006.01); B01J 23/56 (2006.01); B01J 23/70 (2006.01); B01J 23/72 (2006.01); B01J 23/74 (2006.01); B01J 23/63 (2006.01); B01J 23/62 (2006.01); B01J 23/89 (2006.01); B01J 37/02 (2006.01); F01N 3/08 (2006.01); B01J 29/85 (2006.01);
U.S. Cl.
CPC ...
B01J 23/63 (2013.01); B01D 53/9422 (2013.01); B01J 23/626 (2013.01); B01J 23/89 (2013.01); B01J 37/0215 (2013.01); B01J 37/0244 (2013.01); B01J 37/0246 (2013.01); F01N 3/0814 (2013.01); F01N 3/0842 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/1023 (2013.01); B01D 2255/1025 (2013.01); B01D 2255/204 (2013.01); B01D 2255/2042 (2013.01); B01D 2255/2065 (2013.01); B01D 2255/2073 (2013.01); B01D 2255/2094 (2013.01); B01D 2255/20738 (2013.01); B01D 2255/20746 (2013.01); B01D 2255/20761 (2013.01); B01D 2255/9022 (2013.01); B01D 2255/9025 (2013.01); B01D 2255/91 (2013.01); B01J 29/85 (2013.01); F01N 2330/06 (2013.01); F01N 2370/02 (2013.01); F01N 2370/04 (2013.01); F01N 2510/0684 (2013.01);
Abstract

A NOabsorber catalyst comprising a substrate monolith coated with one or more washcoat layers and comprising a first component comprising a nitrogen oxide storage component, at least one precious metal and a dispersed rare earth oxide supported on a refractory support material, and a second component comprising a precious metal supported on a bulk reducible oxide that is substantially free of nitrogen oxide storage material, wherein the precious metal present in the second component comprises Pt, Pd or a combination of both Pt and Pd and wherein the bulk reducible oxide is an oxide, a composite oxide or a mixed oxide comprising at least one of manganese, iron, cobalt, copper, tin or cerium.

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