Patents by Inventor FIONA-MAIREAD McKENNA
FIONA-MAIREAD McKENNA 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: 20230061956Abstract: A method of forming an interlayer of a solid oxide cell unit on the surface of a substrate may include: providing a base interlayer solution comprising a solution of a soluble salt precursor of a metal oxide (crystalline) ceramic and crystalline nanoparticles, depositing the base interlayer solution onto the surface of the substrate, drying the base interlayer solution to define a nanocomposite sub-layer of the soluble salt precursor and nanoparticles, heating the sub-layer to decompose it and form a film of metal oxide comprising nanoparticles on the surface, and firing the substrate with the film on the metal surface, to form a nanocomposite crystalline layer.Type: ApplicationFiled: January 15, 2021Publication date: March 2, 2023Inventors: Fiona-Mairead MCKENNA, Michael RUSS, Mike LANKIN
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Publication number: 20200270475Abstract: A method of coating a substrate includes the steps of: (i) providing a suspension of dye and a binder in a solvent, wherein the ratio of dye to binder is greater than 40 wt % and the dye is uniformly dispersed in the solvent; (ii) spray-coating the suspension onto the substrate with the majority of the solvent evaporating during the spray coating step to result in a coating of dye and binder on the substrate having a density of up to 0.75 gcm-3; and (iii) continuing step (ii) until the coating thickness is at least 30 micrometres; wherein the dye does not include any carbon nanotubes.Type: ApplicationFiled: October 8, 2018Publication date: August 27, 2020Inventors: Ben Poul JENSEN, Fiona-Mairéad MCKENNA, William John Kristian LUDLAM
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Patent number: 10618003Abstract: Exhaust gas catalysts are disclosed. One exhaust gas catalyst comprises a noble metal and a molecular sieve, and has an infrared spectrum having a characteristic absorption peak from 750 cm?1 to 1050 cm?1 in addition to the absorption peaks for the molecular sieve itself. The exhaust gas catalyst also comprises a noble metal and a molecular sieve, having greater than 5 percent of the noble metal amount located inside pores of the molecular sieve. The exhaust gas catalyst also comprises a first and second molecular sieve catalyst. The first molecular sieve catalyst comprises a first noble metal and a first molecular sieve, and the second molecular sieve catalyst comprises a second noble metal and a second molecular sieve. The first and second molecular sieves are different. The invention also includes exhaust systems comprising the exhaust gas catalysts, and a method for treating exhaust gas utilizing the exhaust gas catalysts.Type: GrantFiled: December 8, 2014Date of Patent: April 14, 2020Assignee: Johnson Matthey Public Limited CompanyInventors: Raj Rao Rajaram, Fiona-Mairead McKenna, Hai-Ying Chen, Dongxia Liu
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Patent number: 10112214Abstract: A low reflectivity coating (40, 80/82) is provided on a substrate (22). The coating includes a layer of substantially vertically aligned carbon nanotubes (40) on an exposed surface (21) of the substrate. Provided on and extending partially within the carbon nanotube layer (40) is a hydrophobic coating (80, 82), in the preferred embodiment of or containing fluorocarbon. The hydrophobic coating (80, 82) prevents any settling or ingress of water particles onto or into the carbon nanotube layer (40) and as a result increases the stability of the carbon nanotube layer during use (40) while improving the low reflectivity of the film.Type: GrantFiled: August 26, 2016Date of Patent: October 30, 2018Assignee: SURREY NANOSYSTEMS LIMITEDInventors: Fiona-Mairead Mckenna, Guy Alexander Howlett, Ben Poul Jensen
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Publication number: 20180207679Abstract: A low reflectivity coating (40, 80/82) is provided on a substrate (22). The coating includes a layer of substantially vertically aligned carbon nanotubes (40) on an exposed surface (21) of the substrate. Provided on and extending partially within the carbon nanotube layer (40) is a hydrophobic coating (80, 82), in the preferred embodiment of or containing fluorocarbon. The hydrophobic coating (80, 82) prevents any settling or ingress of water particles onto or into the carbon nanotube layer (40) and as a result increases the stability of the carbon nanotube layer during use (40) whilst improving the low reflectivity of the film.Type: ApplicationFiled: August 26, 2016Publication date: July 26, 2018Inventors: Fiona-Mairead Mckenna, Guy Alexander Howlett, Ben Poul Jensen
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Publication number: 20170072364Abstract: A NOx trap composition, and its use in an exhaust system for internal combustion engines, is disclosed. NOx trap composition comprises a platinum group metal, barium, cobalt, and a magnesia-alumina support. The NOx trap composition is less prone to storage deactivation and exhibits reduced N2O formation.Type: ApplicationFiled: November 22, 2016Publication date: March 16, 2017Inventor: FIONA-MAIREAD McKENNA
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Patent number: 9114385Abstract: A NOx absorber catalyst comprising a substrate monolith coated with one or more washcoat layers and comprising a first component comprising a nitrogen oxide storage component, at least one precious metal and a dispersed rare earth oxide supported on a refractory support material, and a second component comprising a precious metal supported on a bulk reducible oxide that is substantially free of nitrogen oxide storage material, wherein the precious metal present in the second component comprises Pt, Pd or a combination of both Pt and Pd and wherein the bulk reducible oxide is an oxide, a composite oxide or a mixed oxide comprising at least one of manganese, iron, cobalt, copper, tin or cerium.Type: GrantFiled: December 21, 2011Date of Patent: August 25, 2015Assignee: Johnson Matthey Public Limited CompanyInventors: Robert James Brisley, Kenneth David Camm, Noelia Cortes Felix, Fiona-Mairead McKenna, Paul James Millington, Elizabeth Hazel Mountstevens, Daniel Swallow
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Publication number: 20150157982Abstract: Exhaust gas catalysts are disclosed. One exhaust gas catalyst comprises a noble metal and a molecular sieve, and has an infrared spectrum having a characteristic absorption peak from 750 cm?1 to 1050 cm?1 in addition to the absorption peaks for the molecular sieve itself. The exhaust gas catalyst also comprises a noble metal and a molecular sieve, having greater than 5 percent of the noble metal amount located inside pores of the molecular sieve. The exhaust gas catalyst also comprises a first and second molecular sieve catalyst. The first molecular sieve catalyst comprises a first noble metal and a first molecular sieve, and the second molecular sieve catalyst comprises a second noble metal and a second molecular sieve. The first and second molecular sieves are different. The invention also includes exhaust systems comprising the exhaust gas catalysts, and a method for treating exhaust gas utilizing the exhaust gas catalysts.Type: ApplicationFiled: December 8, 2014Publication date: June 11, 2015Inventors: Raj Rao RAJARAM, Fiona-Mairead MCKENNA, Hai-Ying CHEN, Dongxia LIU
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Patent number: 9005560Abstract: A method to produce a NOx trap composition, and its use in a NOx trap and in an exhaust system for internal combustion engines, is disclosed. The NOx trap composition is produced by heating an iron-containing zeolite in the presence of an inert gas and an organic compound to produce a reductively calcined iron/zeolite. A palladium compound is then added to the reductively calcined iron/zeolite, and the resulting Pd—Fe/zeolite is then calcined at 400 to 600° C. in the presence of an oxygen-containing gas to produce the NOx trap composition. The NOx trap composition shows low temperature NO capacity below 200° C., as well as an additional NO storage temperature window in the 200 to 250° C. range.Type: GrantFiled: February 18, 2014Date of Patent: April 14, 2015Assignee: Johnson Matthey Public Limited CompanyInventor: Fiona-Mairead McKenna
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Publication number: 20140234190Abstract: A method to produce a NOx trap composition, and its use in a NOx trap and in an exhaust system for internal combustion engines, is disclosed. The NOx trap composition is produced by heating an iron-containing zeolite in the presence of an inert gas and an organic compound to produce a reductively calcined iron/zeolite. A palladium compound is then added to the reductively calcined iron/zeolite, and the resulting Pd—Fe/zeolite is then calcined at 400 to 600° C. in the presence of an oxygen-containing gas to produce the NOx trap composition. The NOx trap composition shows low temperature NO capacity below 200° C., as well as an additional NO storage temperature window in the 200 to 250° C. range.Type: ApplicationFiled: February 18, 2014Publication date: August 21, 2014Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventor: FIONA-MAIREAD McKENNA
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Publication number: 20130336865Abstract: A NOx absorber catalyst comprising a substrate monolith coated with one or more washcoat layers and comprising a first component comprising a nitrogen oxide storage component, at least one precious metal and a dispersed rare earth oxide supported on a refractory support material, and a second component comprising a precious metal supported on a bulk reducible oxide that is substantially free of nitrogen oxide storage material, wherein the precious metal present in the second component comprises Pt, Pd or a combination of both Pt and Pd and wherein the bulk reducible oxide is an oxide, a composite oxide or a mixed oxide comprising at least one of manganese, iron, cobalt, copper, tin or cerium.Type: ApplicationFiled: December 21, 2011Publication date: December 19, 2013Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventors: Robert James Brisley, Kenneth David Camm, Noelia Cortes Felix, Fiona-Mairead McKenna, Paul James Millington, Elizabeth Hazel Mountstevens, Daniel Swallow
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Publication number: 20130287658Abstract: A NOx trap composition, and its use in an exhaust system for internal combustion engines, is disclosed. NOx trap composition comprises a platinum group metal, barium, cobalt, and a magnesia-alumina support. The NOx trap composition is less prone to storage deactivation and exhibits reduced N2O formation.Type: ApplicationFiled: April 26, 2012Publication date: October 31, 2013Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventor: FIONA-MAIREAD McKENNA