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. 13, 2019
Filed:
Dec. 15, 2017
Johnson Matthey Public Limited Company, London, GB;
Philip Gerald Blakeman, Shanghai, CN;
Gavin Michael Brown, Royston, GB;
Sougato Chatterjee, Audubon, PA (US);
Andrew Francis Chiffey, Royston, GB;
Jane Gast, Audubon, PA (US);
Paul Richard Phillips, Royston, GB;
Hanako Oyamada, Sakura Tochigi, JP;
Raj Rao Rajaram, Reading, GB;
Satoshi Sumiya, Sakura Tochigi, JP;
Andrew Peter Walker, Royston, GB;
Lifeng Wang, Sakura Tochigi, JP;
Johnson Matthey Public Limited Company, London, GB;
Abstract
The invention provides an exhaust gas cleaning oxidation catalyst and in particular to an oxidation catalyst for cleaning the exhaust gas discharged from internal combustion engines of compression ignition type (particularly diesel engines). The invention further relates to a catalyzed substrate monolith comprising an oxidizing catalyst on a substrate monolith for use in treating exhaust gas emitted from a lean-burn internal combustion engine. In particular, the invention relates to a catalyzed substrate monolith comprising a first washcoat coating and a second washcoat coating, wherein the second washcoat coating is disposed in a layer above the first washcoat coating.