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. 31, 2017
Filed:
Oct. 21, 2015
Applicant:
Johnson Matthey Public Limited Company, London, GB;
Inventors:
Paul Joseph Andersen, Plymouth Meeting, PA (US);
Hai-Ying Chen, Conshohocken, PA (US);
Joseph Michael Fedeyko, Glen Mills, PA (US);
Erich Weigert, Newtown Square, PA (US);
Assignee:
Johnson Matthey Public Limited Company, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/92 (2006.01); B01D 53/94 (2006.01); F01N 3/035 (2006.01); F01N 3/28 (2006.01); B01J 23/72 (2006.01); B01J 23/745 (2006.01); B01J 29/76 (2006.01); B01D 53/86 (2006.01); B01D 53/56 (2006.01); B01J 29/072 (2006.01); B01J 29/85 (2006.01);
U.S. Cl.
CPC ...
B01D 53/9418 (2013.01); B01D 53/56 (2013.01); B01D 53/8628 (2013.01); B01D 53/9431 (2013.01); B01D 53/9481 (2013.01); B01D 2251/2062 (2013.01); B01D 2253/1122 (2013.01); B01D 2255/20738 (2013.01); B01D 2255/20761 (2013.01); B01D 2255/50 (2013.01); B01D 2255/9202 (2013.01); B01D 2258/012 (2013.01); B01J 29/072 (2013.01); B01J 29/76 (2013.01); B01J 29/763 (2013.01); B01J 29/85 (2013.01); Y02E 50/12 (2013.01); Y02T 10/24 (2013.01);
Abstract
Provided is a system for treating a flowing exhaust gas comprising a lean NOx trap, a catalyzed soot filter, an ammonia or an ammonia precursor metering system for metering ammonia or an ammonia precursor into the flowing exhaust gas; and an SCR catalyst, wherein the SCR catalyst is disposed downstream of the lean NOx trap and comprises copper and/or iron supported on a small pore molecular sieve.