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:
Jun. 05, 2018
Filed:
May. 31, 2013
Johnson Matthey Public Limited Company, London, GB;
Kaneshalingam Arulraj, Royston, GB;
Ralf Dotzel, Nuremberg, DE;
Rainer Leppelt, Michelau, DE;
Jorg Werner Muench, Lichtenfels, DE;
Alexandra Tsami Goodwin, Royston, GB;
Gudmund Smedler, Bleket, SE;
Johnson Matthey Public Limited Company, London, GB;
Abstract
A filter incorporates a catalyst for the Selective Catalytic Reduction (SCR) of NOgases and removal of particulate matter from the exhaust gas of a lean burn combustion engine, wherein the catalyst includes a vanadate component having an alkaline earth metal, a transition metal, a rare earth metal, or combinations thereof. The vanadate component may be iron vanadate. The filter includes a supported vanadate component disposed on a wall-flow filter. The method of making the filter includes applying an aqueous mixture of the supported vanadate component as a washcoat on the wall-flow filter or extruding a composition containing the supported vanadate component. The method of treating exhaust gases from an engine includes contacting the exhaust gas with the catalyst including the vanadate component.