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:
Mar. 10, 2026
Filed:
Mar. 30, 2021
Basf Mobile Emissions Catalysts Llc, Iselin, NJ (US);
Edgar Viktor Huennekes, Hannover, DE;
Nicholas Mcguire, Huntsville, AL (US);
Petra Cordes, Wunstorf, DE;
Kevin Beard, Iselin, NJ (US);
Jan Martin Becker, Hannover, DE;
John K Hochmuth, State College, NJ (US);
Kenneth E Voss, Somerville, NJ (US);
Joseph A Patchett, Iselin, NJ (US);
Andreas R Munding, Huntsville, AL (US);
BASF Mobile Emissions Catalysts LLC, Iselin, NJ (US);
Abstract
The present invention relates to a process for preparing a catalyst for the selective catalytic reduction of nitrogen oxide comprising, among other steps, preparing a second aqueous mixture comprising water and an iron salt; and disposing the second mixture on the substrate obtained according to (ii), comprising a coating comprising a zeolitic material comprising copper, over y % of the substrate axial length from the inlet end to the outlet end of the substrate, wherein y is in the range of from 10 to x, obtaining a substrate comprising, in a first zone, the coating comprising a zeolitic material comprising copper and over y % of the substrate axial length an iron salt; and, if x>y, in a second zone extending from y % to x % of the substrate axial length from the inlet end to the outlet end, the coating comprising a zeolitic material comprising copper.