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:
Aug. 25, 2026
Filed:
May. 30, 2025
Johnson Matthey Public Limited Company, London, GB;
Andrew Chiffey, Royston, GB;
Kieran Cole, Royston, GB;
Oliver Cooper, Royston, GB;
Christopher Daly, Royston, GB;
Lee Alexander Gilbert, Royston, GB;
Robert Hanley, Royston, GB;
David Micallef, Royston, GB;
Francois Moreau, Royston, GB;
Paul Phillips, Royston, GB;
George Platt, Royston, GB;
Johnson Matthey Public Limited Company, London, GB;
Abstract
A compression ignition internal combustion engine () for a heavy-duty diesel vehicle comprising an exhaust system () comprising a composite oxidation catalyst () and a soot filter substrate () disposed downstream from the composite oxidation catalyst comprising: a substrate (), preferably a honeycomb flow-through substrate monolith, having a total length L and a longitudinal axis and having a substrate surface extending axially between a first substrate end (I) and a second substrate end (O); two catalyst washcoat zones () arranged axially in series on and along the substrate surface.