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:
May. 27, 2025
Filed:
Nov. 10, 2023
Johnson Matthey Public Limited Company, London, GB;
Francesco Foschi, Royston, GB;
James Googan, Royston, GB;
Anton MacMinn, Royston, GB;
David Marvell, Royston, GB;
Stuart David Reid, Royston, GB;
Keimoy St Hill, Royston, GB;
Mark Walton, Royston, GB;
Thilanka Wijemanne, Royston, GB;
Johnson Matthey Public Limited Company, London, GB;
Abstract
A catalytic wall-flow monolith filter for use in an emission treatment system is disclosed. The filter comprises porous walls, a first face and a second face defining a longitudinal direction therebetween and first and second pluralities of channels extending in the longitudinal direction. The first plurality of channels provides a first plurality of inner surfaces and is open at the first face and closed at the second face; and the second plurality of channels provides a second plurality of inner surfaces and is open at the second face and closed at the first face. The filter comprises a first selective catalytic reduction (SCR) catalyst coated on the first plurality of inner surfaces of the porous walls to form a first SCR catalyst porous layer, a second SCR catalyst within the porous walls, and a third SCR catalyst coated on the second plurality of inner surfaces of the porous walls to form a third SCR catalyst porous layer.