Patents by Inventor Johnson Matthey Public Limited Company
Johnson Matthey Public Limited Company 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: 20130209943Abstract: An apparatus for generating and collecting particulate matter derived from combusting a carbon-containing fuel in oxidising gas comprises a fuel burner with a nozzle housed in a container. The container has a gas inlet and a gas outlet; the gas outlet connects with a conduit for transporting the gas to atmosphere which is associated with means for forcing gas to flow from the gas inlet via the container and the conduit to atmosphere. Located within the conduit is a station for collecting particulate matter from gas flowing through the conduit. The gas flow-forcing means is controlled in response to a detected gas flow rate at the gas inlet to ensure the rate of gas flow at the gas inlet is maintained at a desired rate, thereby to promote particulate matter formation. A method for collecting particulate matter derived from combusting carbon-containing fuel is also disclosed.Type: ApplicationFiled: January 30, 2013Publication date: August 15, 2013Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventor: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
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Publication number: 20130152548Abstract: A catalytic aftertreatment system for a diesel engine exhaust gas is described. The system comprises a diesel oxidation catalyst (DOC) and an aftertreatment device located downstream of the diesel oxidation catalyst (DOC), which aftertreatment device requires periodic heat treatment, and means to generate a temperature increase within the aftertreatment device, said diesel oxidation catalyst (DOC) comprising an upstream zone of length from 0.5 to 2 inches (12.7-50.81 mm) of higher oxidation activity for hydrocarbons (HC) than the remainder of the diesel oxidation catalyst (DOC).Type: ApplicationFiled: December 13, 2012Publication date: June 20, 2013Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventor: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
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Publication number: 20130149207Abstract: A substrate monolith 6 having a length L and comprising a first zone 11 of substantially uniform length defined at one end by a first end of the substrate monolith, which first zone comprising a selective catalytic reduction (SCR) catalyst for reducing oxides of nitrogen with a nitrogenous reductant in exhaust gas emitted from an internal combustion engine and a second zone 8 of substantially uniform length less than L defined at one end by a second end of the substrate monolith, which second zone comprising (a) at least one particulate metal oxide or a mixture of any two or more thereof for trapping gas phase platinum group metal (PGM), which at least one particulate metal oxide does not act as a support for any other catalytic component; or (b) a component capable of trapping and/or alloying with gas phase PGM.Type: ApplicationFiled: December 11, 2012Publication date: June 13, 2013Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventor: Johnson Matthey Public Limited Company
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Publication number: 20130149223Abstract: An exhaust system 20 for an internal combustion engine comprises a) a first catalysed substrate monolith 12 comprising a first washcoat coating disposed in a first washcoat zone 16 of the substrate monolith and a second washcoat coating disposed in a second washcoat zone 18 of the substrate monolith, wherein the first washcoat coating comprises a catalyst composition comprising at least one platinum group metal (PGM) and at least one support material, wherein at least one PGM in the first washcoat coating is liable to volatilise when the first washcoat coating is exposed to relatively extreme conditions including relatively high temperatures, wherein the second washcoat coating comprises at least one material supporting copper for trapping volatilised PGM and wherein the second washcoat coating is oriented to contact exhaust gas that has contacted the first washcoat; and b) a second catalysed substrate monolith 14 comprising a catalyst for selectively catalysing the reduction of oxides of nitrogen to dinitrogType: ApplicationFiled: December 11, 2012Publication date: June 13, 2013Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventor: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
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Publication number: 20130149221Abstract: 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 comprising at least one platinum group metal (PGM) and at least one support material for the at least one PGM, wherein at least one PGM in the first washcoat coating is liable to volatilise when the first washcoat coating is exposed to relatively extreme conditions including relatively high temperatures, wherein the second washcoat coating comprises at least one metal oxide for trapping volatilised PGM and wherein the second washcoat coating is oriented to contact exhaust gas that has contacted the first washcoat coating.Type: ApplicationFiled: December 11, 2012Publication date: June 13, 2013Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventor: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
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Publication number: 20130149222Abstract: 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 of the first substrate monolith; and (c) a third substrate monolith 2 disposed between the first substrate monolith and the or each second substrate monolith, wherein at least one PGM on the or each second substrate monolith 4 is liable to volatilise when the or each second substrate monolith 4 is exposed to relatively extreme conditions including relatively high temperatures, and wherein the third substrate monolith 2 comprises a washcoat coating comprising at least one metal oxide for trapping volatilised PGM.Type: ApplicationFiled: December 11, 2012Publication date: June 13, 2013Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventor: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
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Publication number: 20130150583Abstract: Methods of making a chiral phosphorus compound of formula (X) are disclosed: wherein R1, R2, R3 are chiral or achiral groups selected from the list consisting of substituted or unsubstituted straight-chain, branched-chain or cyclic aliphatic or aromatic groups and in which the pair R1/R2 may be interconnected to form a ring.Type: ApplicationFiled: February 6, 2013Publication date: June 13, 2013Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventor: Johnson Matthey Public Limited Company
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Publication number: 20130136677Abstract: 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: January 21, 2013Publication date: May 30, 2013Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventor: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
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Publication number: 20130089481Abstract: 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.Type: ApplicationFiled: October 5, 2012Publication date: April 11, 2013Applicants: JOHNSON MATTHEY PUBLIC LIMITED COMPANY, JOHNSON MATTHEY JAPAN GODO KAISHAInventors: JOHNSON MATTHEY JAPAN GODO KAISHA, Johnson Matthey Public Limited Company