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:
Oct. 30, 2007
Filed:
Sep. 17, 2001
Applicants:
Raj Rao Rajaram, Slough, GB;
Stephen Poulston, Reading, GB;
Inventors:
Raj Rao Rajaram, Slough, GB;
Stephen Poulston, Reading, GB;
Assignee:
Johnson Matthey Public Limited Company, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 23/02 (2006.01); B01J 23/04 (2006.01); B01J 23/10 (2006.01); B01J 23/26 (2006.01); B01J 23/34 (2006.01); B01J 23/42 (2006.01); C01B 21/20 (2006.01); C01B 21/36 (2006.01); F01N 3/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A NOx-trap composition comprises: (a) at least one first NOx storage component comprising at least one alkali metal supported on at least one first support material; and (b) a platinum oxidation catalyst and at least one second NOx storage component not being an alkali metal supported on at least one second support material, whereby the platinum oxidation catalyst and the at least one alkali metal are physically segregated thereby susbtantially maintaining the hydrocarbon conversion activity of the platinum oxidation catalyst.