Patents by Inventor Stanley A. Roth
Stanley A. Roth 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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Patent number: 9044734Abstract: The present invention relates to a layered diesel oxidation catalyst (DOC) comprising: a) a carrier substrate; b) a diesel oxidation catalytic material comprising b1) a first layer located on the carrier substrate, the first layer comprising palladium impregnated on a support material comprising ceria in an amount of at least 45 weight-% based on the total weight of the support material, and optionally comprising platinum; b2) a second layer located on the first layer, the second layer comprising palladium and platinum each impregnated on a support material comprising a metal oxide; wherein the platinum to palladium weight ratio of the first layer is lower than the platinum to palladium weight ratio of the second layer.Type: GrantFiled: September 21, 2012Date of Patent: June 2, 2015Assignees: BASF SE, BASF CORPORATIONInventors: Gerd Grubert, Torsten Neubauer, Alfred Punke, Marcus Hilgendorff, Torsten Müller-Stach, Olga Gerlach, Xinyi Wei, Jeffrey Hoke, Shiang Sung, Stanley Roth
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Patent number: 8858904Abstract: Described is a catalyzed soot filter wherein the inlet coating of the filter comprises an oxidation catalyst comprising platinum (Pt) and optionally palladium (Pd), wherein the outlet coating of the filter comprises an oxidation catalyst comprising Pd and optionally Pt, wherein the Pt concentration in the outlet coating is lower than the Pt concentration in the inlet coating and wherein the weight ratio of Pt:Pd in the outlet coating is in the range of from 0:1 to 2:1; and wherein the inlet coating and the outlet coating are present on the wall flow substrate at a coating loading ratio in the range of from 0.5 to 1.5, calculated as ratio of the loading of the inlet coating (in g/inch3 (g/(2.54 cm)3)):loading of the outlet coating (in g/inch3 (g/(2.54 cm)3)). Systems include such catalyzed soot filters, methods of diesel engine exhaust gas treatment and methods of manufacturing catalyzed soot filters are also described.Type: GrantFiled: February 22, 2011Date of Patent: October 14, 2014Assignee: BASF CorporationInventors: Alfred Helmut Punke, Gerd Grubert, Yuejin Li, Ruediger Wolff, Stanley Roth, Torsten Müller-Stach, Attilio Siani, Kenneth Voss, Torsten Neubauer
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Patent number: 8845974Abstract: Catalyzed soot filters comprising a wall flow monolith having porous walls, a first washcoat permeating the porous walls and a second washcoat on the porous walls are disclosed. Methods of manufacturing catalyzed soot filters and diesel engine exhaust emission treatment systems are also disclosed.Type: GrantFiled: November 24, 2010Date of Patent: September 30, 2014Assignee: BASF CorporationInventors: Yuejin Li, Stanley A. Roth, Alfred H. Punke, Gary A. Gramiccioni
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Publication number: 20140271429Abstract: An oxidation catalyst composite, methods, and systems for the treatment of exhaust gas emissions from a diesel engine are described. More particularly, an oxidation catalyst composite including a zoned diesel oxidation catalyst with a first washcoat zone with a Pt/Pd ratio that is less than 3:1 and a PGM loading at least twice that of a second washcoat zone.Type: ApplicationFiled: March 12, 2014Publication date: September 18, 2014Applicant: BASF CorporationInventors: M. Shahjahan Kazi, Fabien A. Rioult, Stanley A. Roth, Kenneth E. Voss
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Patent number: 8679434Abstract: Described is a catalytic article for the treatment of lean burn engine exhaust gas. The catalytic article comprises a honeycomb substrate having disposed thereon a washcoat containing one or more calcined platinum group metal components dispersed on a refractory metal oxide support located on the honeycomb substrate, the platinum group metal components having an average crystallite size in the range of about 10 to about 25 nm to provide a stable ratio of NO2 to NOx when the exhaust gas flows through the honeycomb substrate. Methods of treating exhaust gas from a lean burn engine and a system for the removal of pollutants from a lean burn engine exhaust gas stream containing NOx are also described.Type: GrantFiled: January 28, 2013Date of Patent: March 25, 2014Assignee: BASF CorporationInventors: Yuejin Li, Stanley A. Roth
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Patent number: 8668877Abstract: Diesel oxidation catalysts, catalytic articles, methods of making catalytic articles, emissions treatment systems and methods of treating an exhaust gas stream using the catalytic articles for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC) and carbon monoxide (CO) are described. Specific catalytic articles comprising a substrate with a first washcoat layer comprising greater than or equal to about 2% by weight palladium dispersed on a ceria support and a second washcoat layer comprising a platinum group metal and a refractory metal oxide are described.Type: GrantFiled: November 24, 2010Date of Patent: March 11, 2014Assignee: Basf CorporationInventors: Xinyi Wei, Stanley A. Roth
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Patent number: 8592337Abstract: Nitrogen oxide storage materials and methods of manufacturing nitrogen oxide storage materials are disclosed. The nitrogen oxide storage materials can be used to manufacture catalytic trap disposed in an exhaust passage of an internal combustion engine which is operated periodically between lean and stoichiometric or rich conditions, for abatement of NOx in an exhaust gas stream which is generated by the engine. In one embodiment, the nitrogen oxide storage material comprises alkaline earth material supported on ceria particles having a crystallite size of between about 10 and 20 nm and the alkaline earth oxide having a crystallite size of between about 20-40 nm.Type: GrantFiled: October 12, 2011Date of Patent: November 26, 2013Assignee: BASF CorporationInventors: Marcus Hilgendorff, Stanley A. Roth, Susanne Stiebels
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Patent number: 8568674Abstract: Oxidation catalyst composites for the treatment of exhaust gas emissions, such as the abatement of unburned hydrocarbons (HC), and carbon monoxide (CO) and the oxidation of NO to NO2 are disclosed The catalyst composites comprise two washcoat layers containing two different compositions of platinum group metals to optimize the NO2 exiting the catalyst composite. The key to improvement in NO oxidation is to have one catalyst layer that contains Pt while being substantially free of Pd. Methods and systems utilizing the catalyst composites are also disclosed.Type: GrantFiled: August 10, 2012Date of Patent: October 29, 2013Assignee: BASF CorporationInventors: Shiang Sung, Stanley A. Roth, Claudia Wendt, Susanne Stiebels, Helke Doering
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Patent number: 8524182Abstract: Disclosed is a catalyzed soot filter with layered design wherein the first coating of the filter comprises an oxidation catalyst comprising platinum (Pt) and optionally palladium (Pd), wherein the second coating of the filter comprises an oxidation catalyst comprising Pd and optionally Pt, wherein the Pt concentration in the second coating is lower than the Pt concentration in the first coating, and wherein the weight ratio of Pt:Pd in the second coating is in the range of from 1:1 to 0:1; and wherein the first coating and the second coating are present on the wall flow substrate at a coating loading ratio in the range of from 0.25 to 3, calculated as ratio of the loading of the first coating (in g/inch3 (g/(2.54 cm)3)): loading of the second coating (in g/inch3 (g/(2.54 cm)3)).Type: GrantFiled: May 11, 2012Date of Patent: September 3, 2013Assignees: BASF SE, BASF CorporationInventors: Gerd Grubert, Alfred Punke, Torsten Neubauer, Ruediger Wolff, Stanley Roth, Yuejin Li, Torsten Müller-Stach, Marcus Hilgendorff
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Publication number: 20130172177Abstract: A catalyst comprising (i) a support, (ii) metal particles and (iii) a shell which is arranged between the metal particles, wherein the shell (iii) comprises silicon oxide.Type: ApplicationFiled: September 13, 2011Publication date: July 4, 2013Applicant: BASF SEInventors: Imme Domke, Wolfgang Rohde, Piotr Antoni Bazula, Norbert Mronga, Yong Liu, Martin Dieterle, Stanley Roth, Curtis Zimmermann, Xinyi Wei, Philipp Raff, Stephan Andreas Schunk, Olga Gerlach, Andreas Strasser, Michael Paul
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Publication number: 20130142714Abstract: Diesel oxidation catalysts comprising a first washcoat layer including a platinum group metal impregnated on a promoted non-zeolitic support are described. The promoter is one or more of tin, manganese, indium, group VIII metals. Methods of making and using the diesel oxidation catalyst, including emissions treatment systems, are also described.Type: ApplicationFiled: December 1, 2011Publication date: June 6, 2013Applicant: BASF Catalysts LLCInventors: Shiang Sung, Stanley A. Roth, Torsten W. Mueller-Stach, Attilio Siani
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Patent number: 8449852Abstract: Diesel oxidation catalysts comprising a first washcoat layer including a platinum group metal impregnated on a promoted non-zeolitic support are described. The promoter is one or more of tin, manganese, indium, group VIII metals. Methods of making and using the diesel oxidation catalyst, including emissions treatment systems, are also described.Type: GrantFiled: December 1, 2011Date of Patent: May 28, 2013Assignee: BASF CorporationInventors: Shiang Sung, Stanley A. Roth, Torsten W. Mueller-Stach, Attilio Siani
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Patent number: 8329607Abstract: Provided are diesel exhaust components where palladium is segregated from a molecular sieve, specifically a zeolite, in a catalytic material. In the catalytic material, therefore, there are at least two layers: a palladium-containing layer that is substantially free of a molecular sieve and a hydrocarbon trap layer that comprises at least one molecular sieve and is substantially free of palladium. The palladium is provided on a high surface area, porous refractory metal oxide support. The catalytic material can further comprise a platinum component, where a minor amount of the platinum component is in the hydrocarbon trap layer, and a majority amount of the platinum component is in the palladium-containing layer. Systems and methods of using the same are also provided.Type: GrantFiled: January 14, 2010Date of Patent: December 11, 2012Assignee: BASF CorporationInventors: M. Shahjahan Kazi, Michel Deeba, Torsten Neubauer, Alfred Helmut Punke, Torsten Wolfgang Mueller-Stach, Gerd Grubert, Stanley A. Roth, Jeffrey Barmont Hoke, Shlang Sung, Yuejin Li, Xinyi Wei, Chung-Zong Wan
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Publication number: 20120288427Abstract: Disclosed is a catalyzed soot filter with layered design wherein the first coating of the filter comprises an oxidation catalyst comprising platinum (Pt) and optionally palladium (Pd), wherein the second coating of the filter comprises an oxidation catalyst comprising Pd and optionally Pt, wherein the Pt concentration in the second coating is lower than the Pt concentration in the first coating, and wherein the weight ratio of Pt:Pd in the second coating is in the range of from 1:1 to 0:1; and wherein the first coating and the second coating are present on the wall flow substrate at a coating loading ratio in the range of from 0.25 to 3, calculated as ratio of the loading of the first coating (in g/inch3 (g/(2.54 cm)3)): loading of the second coating (in g/inch3 (g/(2.54 cm)3)).Type: ApplicationFiled: May 11, 2012Publication date: November 15, 2012Applicants: BASF Corporation, BASF SEInventors: Gerd Grubert, Alfred Punke, Torsten Neubauer, Ruediger Wolff, Stanley Roth, Yuejin Li, Torsten Müller-Stach, Marcus Hilgendorff
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Patent number: 8211392Abstract: Provided is a catalyst composition, in particular a diesel oxidation catalyst, for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC), and carbon monoxide (CO). More particularly, the present invention is directed to a catalyst structure comprising at least two, specifically three distinct layers, at least one of which contains an oxygen storage component (OSC) that is present in a layer separate from the majority of the platinum group metal (PGM) components, such as palladium and platinum.Type: GrantFiled: January 13, 2010Date of Patent: July 3, 2012Assignee: BASF CorporationInventors: Gerd Grubert, Torsten Neubauer, Alfred H. Punke, Torsten W. Müller-Stach, Attilio Siani, Stanley A. Roth, Jeffrey B. Hoke, Shiang Sung, Yuejin Li, Xinyi Wei, Michel Deeba
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Publication number: 20120124974Abstract: Catalyzed soot filters comprising a wall flow monolith having porous walls, a first washcoat permeating the porous walls and a second washcoat on the porous walls are disclosed. Methods of manufacturing catalyzed soot filters and diesel engine exhaust emission treatment systems are also disclosed.Type: ApplicationFiled: November 24, 2010Publication date: May 24, 2012Applicant: BASF CorporationInventors: Yuejin Li, Stanley A. Roth, Alfred H. Punke, Gary A. Gramiccioni
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Publication number: 20120124975Abstract: Diesel oxidation catalysts, catalytic articles, methods of making catalytic articles, emissions treatment systems and methods of treating an exhaust gas stream using the catalytic articles for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC) and carbon monoxide (CO) are described. Specific catalytic articles comprising a substrate with a first washcoat layer comprising greater than or equal to about 2% by weight palladium dispersed on a cerin support and a second washcoat layer comprising a platinum group metal and a refractory metal oxide are described.Type: ApplicationFiled: November 24, 2010Publication date: May 24, 2012Applicant: BASF CorporationInventors: Xinyi Wei, Stanley A. Roth
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Publication number: 20120079817Abstract: A diesel oxidation catalyst for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC) and carbon monoxide (CO) is described. Also described is a novel washcoat composition including a surface-coated zeolite coated with at least one of zirconia and alumina, and a platinum group metal supported on a high surface area alumina.Type: ApplicationFiled: September 26, 2011Publication date: April 5, 2012Applicant: BASF CorporationInventors: Xinyi Wei, Stanley A. Roth
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Publication number: 20120023915Abstract: Nitrogen oxide storage materials and methods of manufacturing nitrogen oxide storage materials are disclosed. The nitrogen oxide storage materials can be used to manufacture catalytic trap disposed in an exhaust passage of an internal combustion engine which is operated periodically between lean and stoichiometric or rich conditions, for abatement of NOx in an exhaust gas stream which is generated by the engine. In one embodiment, the nitrogen oxide storage material comprises alkaline earth material supported on ceria particles having a crystallite size of between about 10 and 20 nm and the alkaline earth oxide having a crystallite size of between about 20-40 nm.Type: ApplicationFiled: October 12, 2011Publication date: February 2, 2012Applicant: BASF CorporationInventors: Marcus Hilgendorff, Stanley A. Roth, Susanne Stiebels
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Patent number: 8022010Abstract: Nitrogen oxide storage materials and methods of manufacturing nitrogen oxide storage materials are disclosed. The nitrogen oxide storage materials can be used to manufacture catalytic trap disposed in an exhaust passage of an internal combustion engine which is operated periodically between lean and stoichiometric or rich conditions, for abatement of NOx in an exhaust gas stream which is generated by the engine. In one embodiment, the nitrogen oxide storage material comprises alkaline earth material supported on ceria particles having a crystallite size of between about 10 and 20 nm and the alkaline earth oxide having a crystallite size of between about 20-40 nm.Type: GrantFiled: July 6, 2009Date of Patent: September 20, 2011Assignee: BASF CorporationInventors: Marcus Hilgendorff, Stanley A. Roth, Susanne Stiebels