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:
Apr. 06, 2021
Filed:
Dec. 16, 2016
Applicant:
Umicore Ag & Co. KG, Hanau-Wolfgang, DE;
Inventors:
Christoph Hengst, Butzbach, DE;
Marco Lopez, Frankfurt, DE;
Assignee:
UMICORE AG & CO. KG, Hanau-Wolfgang, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/035 (2006.01); F01N 3/20 (2006.01); B01J 23/42 (2006.01);
U.S. Cl.
CPC ...
F01N 3/2073 (2013.01); B01J 23/42 (2013.01); F01N 3/035 (2013.01); F01N 3/208 (2013.01);
Abstract
The present invention relates to a method for preventing an SCR catalyst from being contaminated with platinum group metal in an emission control system comprising, upstream of the SCR catalyst, a catalyst that contains platinum group metal, characterized in that a material zone containing a mixture of aluminum oxide and cerium oxide is located upstream of the SCR catalyst.