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Graham Paul Ansell, Janet Mary Fisher, Peter Geoffrey Gray, Hugh Gavin Charles Hamilton, Raj Rao Rajaram: Diesel engine exhaust gas purification method. Johnson Matthey Public Company, Ratner & Prestia, August 31, 1999: US05943857 (27 worldwide citation)

A process for the improved conversion of NO.sub.x in the exhaust gases from a light diesel engine using lean NO.sub.x catalyst converter in the exhaust system. The process is characterized in that unburned hydrocarbons are adsorbed into an adsorbent in the catalytic converter at temperatures below 1 ...


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Satoshi Sumiya, Lifeng Wang, Hanako Oyamada, Philip Gerald Blakeman, Michael Gavin Brown, Sougato Chatterjee, Andrew Francis Chiffey, Jane Gast, Paul Richard Phillips, Raj Rao Rajaram, Andrew Peter Walker: Oxidation catalyst for internal combustion engine exhaust gas treatment. Johnson Matthey Public Company, Johnson Matthey Japan Godo Kaisha, Kevin M Carroll, February 18, 2014: US08652429 (25 worldwide citation)

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 mon ...


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Philip Gerald Blakeman, Gavin Michael Brown, Sougato Chatterjee, Andrew Francis Chiffey, Jane Gast, Paul Richard Phillips, Raj Rao Rajaram, Glen Spreitzer, Andrew Peter Walker: Catalysed substrate monolith. Johnson Matthey Public Company, Kevin M Carroll, March 11, 2014: US08667785 (23 worldwide citation)

A catalysed substrate monolith 12 for use in treating exhaust gas emitted from a lean-burn internal combustion engine, which catalysed substrate monolith 12 comprising a first washcoat coating 16 and a second washcoat coating 18, wherein the first washcoat coating comprises a catalyst composition co ...


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Satoshi Sumiya, Lifeng Wang, Hanako Oyamada, Philip Gerald Blakeman, Gavin Michael Brown, Sougato Chatterjee, Andrew Francis Chiffey, Jane Gast, Paul Richard Phillips, Raj Rao Rajaram, Andrew Peter Walker: Oxidation catalyst for internal combustion engine exhaust gas treatment. Johnson Matthey Public Company, Johnson Matthey Japan Godo Kaisha, Kevin M Carroll, April 14, 2015: US09005559 (14 worldwide citation)

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 mon ...


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Paul Joseph Andersen, Jillian Elaine Bailie, John Leonello Casci, Hai Ying Chen, Joseph Michael Fedeyko, Rodney Kok Shin Foo, Raj Rao Rajaram: Transition metal/zeolite SCR catalysts. Jimmie D Johnson Jr, December 10, 2013: US08603432 (13 worldwide citation)

A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one transition metal, wherein the zeolite is a small pore zeolite containing a maximum ring size of eight tetrahed ...


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Stanislaw Edmund Golunski, Valerie Marie Renee Houel, Andrea Hawkings, David William James, Stephen David Pollington, Stephen Poulston, Raj Rao Rajaram: containing exhaust gas from a lean burn engine, Catalyst structure for treating NO. Johnson Matthey Public Company, RatnerPrestia, February 3, 2009: US07485271 (13 worldwide citation)

A catalyst structure for treating exhaust gas from a lean burn internal combustion engine comprises a substrate monolith comprising a lean NOX catalyst (LNC) composition associated with at least one partial oxidation catalyst (POC), wherein the LNC composition is selected from the group consisting o ...


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Philip Gerald Blakeman, Sougato Chatterjee, Andrew Francis Chiffey, Jane Gast, Paul Richard Phillips, Raj Rao Rajaram, Andrew Peter Walker: Exhaust system for a lean-burn IC engine comprising a PGM component and a SCR catalyst. Johnson Matthey Public Company, Kevin M Carroll, March 11, 2014: US08668891 (12 worldwide citation)

An exhaust system 10 for a vehicular lean-burn internal combustion engine comprises: (a) a first substrate monolith 6 comprising a SCR catalyst; (b) at least one second substrate monolith 4 comprising a catalytic washcoat coating comprising at least one platinum group metal (PGM) disposed upstream o ...


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Raj Rao Rajaram, Stephen Poulston: NOx-trap. Johnson Matthey Public Company, RatnerPrestia, October 30, 2007: US07287370 (11 worldwide citation)

A NOx-trap composition comprises: (a) at least one first NOx storage component comprising at least one alkali metal supported on at least one first support material; and (b) a platinum oxidation catalyst and at least one second NOx storage component not being an alkali metal supported on at least on ...