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. 15, 2019
Filed:
Nov. 18, 2015
Johnson Matthey Public Limited Company, London, GB;
Paul Richard Phillips, Royston, GB;
Guy Richard Chandler, Cambridge, GB;
Alexander Nicholas Michael Green, Baldock, GB;
Matthew Eben Harris, Royston, GB;
James Alexander Wylie, Royston, GB;
Miroslaw Gall, Royston, GB;
Garry Adam Burgess, Royston, GB;
Johnson Matthey Public Limited Company, London, GB;
Abstract
A catalyst article comprises an SCR catalyst and a NOx adsorber catalyst, where each of these catalysts comprise a metal molecular sieve, each with a different metal. The catalyst article can be close coupled with other components to give a NOperformance advantage from cold start to a combined DOC and SCRF system. Higher NOconversion is also shown in under-floor location due to NOx storage before SCR light off and selective NHslip control, allowing higher NH3 fill levels. Systems comprising the catalyst article and methods of using the catalyst article to give improved hydrocarbon and carbon monoxide control, as well as ammonia slip control, are described. The systems can include flow-through or wall-flow monoliths.