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. 23, 2013
Filed:
Sep. 10, 2010
Applicants:
Padmanabha Reddy Ettireddy, Columbus, IN (US);
Matthew Henrichsen, Columbus, IN (US);
Inventors:
Padmanabha Reddy Ettireddy, Columbus, IN (US);
Matthew Henrichsen, Columbus, IN (US);
Assignee:
Cummins IP, Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 50/00 (2006.01); B01J 23/00 (2006.01); F01N 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
According to one embodiment, described herein is an exhaust gas after-treatment system that is coupleable in exhaust gas stream receiving communication with an internal combustion engine. The exhaust gas after-treatment system includes a low temperature SCR catalyst configured to reduce NOin exhaust gas having a temperature below a temperature threshold. The system also includes a normal-to-high temperature SCR catalyst configured to reduce NOin exhaust gas having a temperature above the temperature threshold.