Patents by Inventor Richard A. Chandler
Richard A. Chandler has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20140227155Abstract: Provided is an SCRF article having different SCR catalysts compositions disposed on a wall-flow filter substrate in zones that are arranged in series with respect to the inlet and outlet faces of the substrate. Also provided is method of reducing backpressure and ammonia slip that involves the use of such SCRF articles.Type: ApplicationFiled: April 28, 2014Publication date: August 14, 2014Applicant: Johnson Matthey Public Limited CompanyInventors: Paul Richard PHILLIPS, Guy Richard CHANDLER, Keith Anthony FLANAGAN
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Patent number: 8789356Abstract: Provided is an SCRF article having different SCR catalysts compositions disposed on a wall-flow filter substrate in zones that are arranged in series with respect to the inlet and outlet faces of the substrate. Also provided is method of reducing backpressure and ammonia slip that involves the use of such SCRF articles.Type: GrantFiled: January 20, 2012Date of Patent: July 29, 2014Assignee: Johnson Matthey Public Limited CompanyInventors: Paul Richard Phillips, Guy Richard Chandler, Keith Anthony Flanagan
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Publication number: 20140186228Abstract: A filter for filtering particulate matter (PM) from exhaust gas emitted from a compression ignition engine, which filter comprising a porous substrate having inlet surfaces and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a wash coat comprising a plurality of solid particles comprising a molecular sieve promoted with at least one metal wherein the porous structure of the wash coated porous substrate contains pores of a second mean pore size, and wherein the second mean pore size is less than the first mean pore size.Type: ApplicationFiled: December 16, 2013Publication date: July 3, 2014Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventors: Louise ARNOLD, Robert BRISLEY, Guy Richard CHANDLER, Andrew Francis CHIFFEY, Keith Anthony FLANAGAN, David GREENWELL, Christopher MORGAN
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Publication number: 20140186232Abstract: A method of coating a honeycomb monolith substrate comprising a plurality of channels with a liquid comprising a catalyst component comprises the steps of: (i) holding a honeycomb monolith substrate substantially vertically; (ii) introducing a pre-determined volume of the liquid into the substrate via open ends of the channels at a lower end of the substrate; (iii) sealingly retaining the introduced liquid within the substrate; (iv) inverting the substrate containing the retained liquid; and (v) applying a vacuum to open ends of the channels of the substrate at the inverted, lower end of the substrate to draw the liquid along the channels of the substrate.Type: ApplicationFiled: March 6, 2014Publication date: July 3, 2014Applicant: Johnson Matthey Public Limited CompanyInventors: Guy Richard CHANDLER, Keith Anthony FLANAGAN, Paul Richard PHILLIPS, Paul SCHOFIELD, Michael Leonard William Spencer, Hedley Michael STRUTT
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Patent number: 8756926Abstract: An exhaust system (10) for a lean-burn internal combustion engine (12) comprises a first substrate monolith (16) comprising a catalyst for oxidizing nitric oxide (NO) comprising a catalytic oxidation component followed downstream by a second substrate monolith (18) which is a wall-flow filter having inlet channels and outlet channels, wherein the inlet channels comprise a NO x absorber catalyst (20) and the outlet channels comprise a catalyst for selective catalytic reduction (22) of nitrogen oxides with nitrogenous reductant.Type: GrantFiled: July 6, 2009Date of Patent: June 24, 2014Assignee: Johnson Matthey Public Limited CompanyInventors: Guy Richard Chandler, Neil Robert Collins, Paul Richard Phillips, Daniel Swallow
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Patent number: 8752367Abstract: An exhaust system for a lean burn internal combustion engine comprises a particulate filter (CSF), a first NOx absorbent (NOx(1)) disposed upstream of the filter and a second NOx absorbent (NOx(2)) disposed downstream of the filter.Type: GrantFiled: April 25, 2011Date of Patent: June 17, 2014Assignee: Johnson Matthey PLLCInventors: Claus Friedrich Goersmann, Paul Richard Phillips, Philip Gerald Blakeman, Guy Richard Chandler
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Publication number: 20140157763Abstract: An extruded honeycomb catalyst for nitrogen oxide reduction according to the selective catalytic reduction (SCR) method in exhaust gases from motor vehicles includes an extruded active carrier in honeycomb form having a first SCR catalytically active component and with a plurality of channels through which the exhaust gas flows during operation, and a washcoat coating having a second SCR catalytically active component being applied to the extruded body, wherein the first SCR catalytically active component and the second SCR catalytically active component are each independently one of: (i) vanadium catalyst with vanadium as catalytically active component; (ii) mixed-oxide catalyst with one or more oxides, in particular those of transition metals or lanthanides as catalytically active component; and (iii) an Fe- or a Cu-zeolite catalyst.Type: ApplicationFiled: July 31, 2012Publication date: June 12, 2014Applicant: Johnson Matthey Public Limited CompanyInventors: Guy Richard Chandler, Neil Robert Collins, Ralf Dotzel, Jörg Werner Münch, Paul Richard Philips, Gudmund Smedler, Andrew Peter Walker
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Patent number: 8703236Abstract: A method of coating a honeycomb monolith substrate comprising a plurality of channels with a liquid comprising a catalyst component comprises the steps of: (i) holding a honeycomb monolith substrate substantially vertically; (ii) introducing a pre-determined volume of the liquid into the substrate via open ends of the channels at a lower end of the substrate; (iii) sealingly retaining the introduced liquid within the substrate; (iv) inverting the substrate containing the retained liquid; and (v) applying a vacuum to open ends of the channels of the substrate at the inverted, lower end of the substrate to draw the liquid along the channels of the substrate.Type: GrantFiled: January 4, 2011Date of Patent: April 22, 2014Assignee: Johnson Matthey Public Limited CompanyInventors: Guy Richard Chandler, Keith Anthony Flanagan, Paul Richard Phillips, Paul Schofield, Michael Leonard William Spencer, Hedley Michael Strutt
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Publication number: 20140037523Abstract: A catalyst composition is provided having a zeolite material of a CHA crystal structure and a silica to alumina mole ratio (SAR) of about 10 to about 25 and preferably having a mean crystal size of at least 1.0 microns; and a non-aluminum base metal (M), wherein said zeolite material contains said base metal in a base metal to aluminum ratio (M:Al) of about 0.10 to about 0.24.Type: ApplicationFiled: August 14, 2013Publication date: February 6, 2014Applicant: Johnson Matthey Public Limited CompanyInventors: Todd Howard Ballinger, Philip Gerald Blakeman, Guy Richard Chandler, Hai-Ying Chen, Julian Peter Cox, Joseph M. Fedeyko, Alexander Nicholas Michael Green, Paul Richard Phillips, Stuart David Reid, Erich Conlan Weigert, James Alexander Wylie
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Publication number: 20140033685Abstract: An exhaust system for a vehicular lean burn internal combustion engine that emits oxides of nitrogen (NOx) and particulate matter (PM) is disclosed. The system comprises a NOx reduction catalyst for reducing NOx in the presence of a nitrogenous reductant, means for introducing the nitrogenous reductant into a flowing exhaust gas, a filter for removing PM from exhaust gas flowing in the exhaust system and a low pressure exhaust gas recirculation (EGR) circuit for connecting the exhaust system downstream of the filter to an air intake of the engine. The EGR circuit comprises an ammonia oxidation catalyst.Type: ApplicationFiled: February 21, 2012Publication date: February 6, 2014Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventors: Guy Richard Chandler, Neil Robert Collins, Paul Richard Phillips
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Publication number: 20130340413Abstract: An exhaust system for a vehicular lean burn internal combustion engine that emits oxides of nitrogen (NOx) and particulate matter (PM) is disclosed. The system comprises a NOx reduction catalyst for reducing NOx in the presence of a reductant, means for introducing reductant into a flowing exhaust gas and a source of hydrocarbon reductant, a nitrogenous reductant, and/or hydrogen, a filter for removing PM from exhaust gas flowing in the exhaust system and a low pressure exhaust gas recirculation (EGR) circuit for connecting the exhaust system downstream of the filter to an air intake of the engine. The EGR circuit comprises a IMOx adsorber catalyst (NAC) comprising a NO adsorbent.Type: ApplicationFiled: February 21, 2012Publication date: December 26, 2013Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventors: Guy Richard Chandler, Alexander Nicholas Michael Green, Stuart David Reid
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Patent number: 8608820Abstract: A filter for filtering particulate matter (PM) from exhaust gas emitted from a compression ignition engine, which filter comprising a porous substrate having inlet surfaces and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a wash coat comprising a plurality of solid particles comprising a molecular sieve promoted with at least one metal wherein the porous structure of the wash coated porous substrate contains pores of a second mean pore size, and wherein the second mean pore size is less than the first mean pore size.Type: GrantFiled: February 26, 2010Date of Patent: December 17, 2013Assignee: Johnson Matthey Public Limited CompanyInventors: Louise Arnold, Robert Brisley, Guy Richard Chandler, Andrew Francis Chiffey, Keith Anthony Flanagan, David Greenwell, Christopher Morgan
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Patent number: 8535629Abstract: Provided is a catalyst comprising (a) a zeolite material having a mean crystal size of at least about 0.5 ?m, having a CHA framework that contains silicon and aluminum, and having a silica-to-alumina mole ratio (SAR) of about 10 to about 25; and (b) an extra-framework promoter metal (M) disposed in said zeolite material as free and/or exchanged metal, wherein the extra-framework promoter metal is copper, iron, and mixtures thereof, and is present in a promoter metal-to-aluminum atomic ratio (M:Al) of about 0.10 to about 0.24 based on the framework aluminum; and optionally comprising (c) at least about 1 weight percent of cerium in said zeolite material, based on the total weight of the zeolite, wherein said cerium is present in a form selected from exchanged cerium ions, monomeric ceria, oligomeric ceria, and combinations thereof, provided that said oligomeric ceria has a particle size of less than 5 ?m.Type: GrantFiled: December 2, 2011Date of Patent: September 17, 2013Assignee: Johnson Matthey Public Limited CompanyInventors: Todd Howard Ballinger, Philip Gerald Blakeman, Guy Richard Chandler, Hai-Ying Chen, Julian Peter Cox, Joseph M. Fedeyko, Alexander Nicholas Michael Green, Paul Richard Phillips, Stuart David Reid, Erich C. Weigert, James Alexander Wylie
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Patent number: 8480986Abstract: A system for NOx reduction in combustion gases, especially from diesel engines, incorporates an oxidation catalyst to convert at least a portion of NO to NO2, tparticulate filter, a source of reductant such as NH3 and an SCR catalyst. Considerable improvements in NOx conversion are observed.Type: GrantFiled: August 5, 2011Date of Patent: July 9, 2013Assignees: Daimler AG, HJS Fahrezeutechnik GmbH & Co. KG, Johnson Matthey Public Ltd. Co.Inventors: Anders Andreasson, Guy Richard Chandler, Claus Friedrich Goersmann, James Patrick Warren, Georg Huethwohl
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Publication number: 20120275977Abstract: A heterogeneous catalyst article having at least one combination of a first molecular sieve having a medium pore, large pore, or meso-pore crystal structure and optionally containing a first metal, and a second molecular sieve having a small pore crystal structure and optionally containing a second metal, and a monolith substrate onto or within which said catalytic component is incorporated, wherein the combination of the first and second molecular sieves is a blend, a plurality of layers, and/or a plurality of zones.Type: ApplicationFiled: May 22, 2012Publication date: November 1, 2012Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventors: GUY RICHARD CHANDLER, ALEXANDER NICHOLAS MICHAEL GREEN, JOANNE ELIZABETH MELVILLE, PAUL RICHARD PHILLIPS, STUART DAVID REID
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Publication number: 20120258032Abstract: Provided is a wall-flow filter coated with an SCR catalyst composition, wherein the catalyst composition contains transition metal promoted molecular sieve crystals, and wherein (i) the crystals have a mean crystalline size of about 0.5 ?m to about 15 ?m, (ii) the crystals are present in said composition as individual crystals, agglomerations having a mean particle size of less than about 15 ?m, or a combination of said individual crystals and said agglomerations; and (iii) said molecular sieve is an aluminosilicate or a silico-aluminophosphate of a Framework Type having a maximum ring size of eight tetrahedral atoms.Type: ApplicationFiled: January 19, 2012Publication date: October 11, 2012Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventors: Paul Richard Phillips, Guy Richard Chandler, Keith Anthony Flanagan, Alexander Nicholas Michael Green
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Publication number: 20120201731Abstract: Provided is a catalyst comprising (a) a zeolite material having a mean crystal size of at least about 0.5 ?m, having a CHA framework that contains silicon and aluminum, and having a silica-to-alumina mole ratio (SAR) of about 10 to about 25; and (b) an extra-framework promoter metal (M) disposed in said zeolite material as free and/or exchanged metal, wherein the extra-framework promoter metal is copper, iron, and mixtures thereof, and is present in a promoter metal-to-aluminum atomic ratio (M:Al) of about 0.10 to about 0.24 based on the framework aluminum; and optionally comprising (c) at least about 1 weight percent of cerium in said zeolite material, based on the total weight of the zeolite, wherein said cerium is present in a form selected from exchanged cerium ions, monomeric ceria, oligomeric ceria, and combinations thereof, provided that said oligomeric ceria has a particle size of less than 5 ?m.Type: ApplicationFiled: December 2, 2011Publication date: August 9, 2012Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventors: Todd Howard Ballinger, Philip Gerald Blakeman, Guy Richard Chandler, Hai-Ying Chen, Julian Peter Cox, Joseph M. Fedeyko, Alexander Nicholas Michael Green, Paul Richard Phillips, Stuart David Reid, Erich C. Weigert, James Alexander Wylie
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Publication number: 20120186229Abstract: Provided is an SCRF article having different SCR catalysts compositions disposed on a wall-flow filter substrate in zones that are arranged in series with respect to the inlet and outlet faces of the substrate. Also provided is method of reducing backpressure and ammonia slip that involves the use of such SCRF articles.Type: ApplicationFiled: January 20, 2012Publication date: July 26, 2012Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventors: Paul Richard Phillips, Guy Richard Chandler, Keith Anthony Flanagan
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Publication number: 20120097033Abstract: A filter for filtering particulate matter (PM) from exhaust gas emitted from a compression ignition engine, which filter comprising a porous substrate having inlet surfaces and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a wash coat comprising a plurality of solid particles comprising a molecular sieve promoted with at least one metal wherein the porous structure of the wash coated porous substrate contains pores of a second mean pore size, and wherein the second mean pore size is less than the first mean pore size.Type: ApplicationFiled: February 26, 2010Publication date: April 26, 2012Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventors: Louise Arnold, Robert Brisley, Guy Richard Chandler, Andrew Francis Chiffey, Keith Anthony Flanagan, David Greenwell, Christopher Morgan
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Patent number: 8142747Abstract: A system for NOx reduction in combustion gases, especially from diesel engines, incorporates an oxidation catalyst to convert at least a portion of NO to NO2, a particulate filter, a source of reductant such as NH3 and an SCR catalyst. Considerable improvements in NOx conversion are observed.Type: GrantFiled: February 27, 2009Date of Patent: March 27, 2012Inventors: Anders Andreasson, Guy Richard Chandler, Claus Friedrich Goersmann, James Patrick Warren, Georg Huethwohl