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. 12, 2022
Filed:
Dec. 20, 2017
Applicant:
Umicore Ag & Co. KG, Hanau-Wolfgang, DE;
Inventors:
Stephan Malmberg, Frankfurt, DE;
Nicola Soeger, Nidderau, DE;
Assignee:
UMICORE AG & CO, KG, Hanau-Wolfgang, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/28 (2006.01); F01N 3/20 (2006.01); B01J 21/06 (2006.01); B01J 23/22 (2006.01);
U.S. Cl.
CPC ...
F01N 3/2803 (2013.01); B01J 21/063 (2013.01); F01N 3/2073 (2013.01); B01J 23/22 (2013.01); F01N 2370/04 (2013.01); F01N 2510/0684 (2013.01); F01N 2610/02 (2013.01);
Abstract
The invention relates to a catalyst device for purifying exhaust gases containing nitrogen oxide by using selective catalytic reduction (SCR), the catalyst device comprising at least two catalytic layers, the first layer containing vanadium oxide and a mixed oxide comprising titanium oxide and silicon oxide and the second layer containing a molecular sieve containing iron, wherein the first layer is applied onto the second layer. The invention also relates to uses of the catalyst device and a method for purifying exhaust gases.