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:
Jan. 17, 2017
Filed:
May. 15, 2015
Johnson Matthey Public Limited Company, London, GB;
Olivier Sonntag, Stuttgart, DE;
Tim Genschow, Bad Oeynhausen, DE;
Gudmund Smedler, Royston, GB;
Andrew Peter Walker, Hazlemere, GB;
Mikael Larsson, Gothenburg, SE;
Penelope Markatou, Wayne, PA (US);
Lingzhi Zhang, Audubon, PA (US);
Jane Gast, Spring City, PA (US);
Johnson Matthey Public Limited Company, London, GB;
Abstract
Provided is a catalytic article comprising (a) a flow through honeycomb substrate having channel walls; (b) a first NH-SCR catalyst composition coated on and/or within the channel walls in a first zone; and (c) a second NH-SCR catalyst composition coated on and/or within the channel walls in a second zone, provided that the first zone is upstream of the second zone and the first and second zones are adjacent or at least partially overlap; and wherein the first NH-SCR catalyst comprises a first copper loaded molecular sieve having a copper to aluminum atomic ratio of about 0.1 to 0.375 and the second NH-SCR catalyst comprises a second copper loaded molecular sieve having a copper-to-aluminum atomic ratio of about 0.3 to about 0.6.