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:
Apr. 14, 2015
Filed:
Jan. 20, 2014
Johnson Matthey Japan G.k., Sakura-shi Tochigi, JP;
Johnson Matthey Public Limited Company, London, GB;
Satoshi Sumiya, Sakura, JP;
Lifeng Wang, Sakura, JP;
Hanako Oyamada, Sakura, JP;
Philip Gerald Blakeman, Philadelphia, PA (US);
Gavin Michael Brown, Essex, GB;
Sougato Chatterjee, Wayne, PA (US);
Andrew Francis Chiffey, Ware, GB;
Jane Gast, Spring City, PA (US);
Paul Richard Phillips, Royston, GB;
Raj Rao Rajaram, Slough, GB;
Andrew Peter Walker, High Wycombe, GB;
Johnson Matthey Public Limited Company, London, GB;
Johnson Matthey Japan Godo Kaisha, Sakura-Shi Tochigi, JP;
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 catalysed substrate monolith comprising an oxidising 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 catalysed 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.