Patents by Inventor Richard J. Blint
Richard J. Blint 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: 8545779Abstract: A method for catalytic oxidation of NO to NO2 in the sulfur-containing exhaust gases of lean-burn engines, such as diesel engines is disclosed. The catalysts are oxide perovskites with a credible likelihood of being sulfur-tolerant.Type: GrantFiled: January 13, 2011Date of Patent: October 1, 2013Assignee: GM Global Technology Operations LLCInventors: Richard J. Blint, Chang H. Kim
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Patent number: 8409518Abstract: A sulfur tolerant oxidation catalyst with appreciable NO and HC oxidation capabilities has been developed for use in any component of an exhaust aftertreatment system for a lean-burn engine where the oxidation of at least NO is desired. Several non-exclusive examples of such components where the oxidation catalyst may be employed include a DOC and a LNT. The oxidation catalyst may comprise perovskite oxide particles that support palladium particles. The ability of the palladium supported perovskite oxide particles to concurrently oxidize NO and HC's can significantly diminish or altogether eliminate the use of platinum in the exhaust aftertreatment system for at least NO oxidation. The oxidation catalyst, moreover, may exhibit superior thermal durability and better NO and HC oxidation activities than platinum in some instances.Type: GrantFiled: March 9, 2010Date of Patent: April 2, 2013Assignee: GM Global Technology Operations LLCInventors: Chang H Kim, Wei Li, Richard J. Blint
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Publication number: 20120180453Abstract: A method for catalytic oxidation of NO to NO2 in the sulfur-containing exhaust gases of lean-burn engines, such as diesel engines is disclosed. The catalysts are oxide perovskites with a credible likelihood of being sulfur-tolerant.Type: ApplicationFiled: January 13, 2011Publication date: July 19, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Richard J. Blint, Chang H. Kim
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Patent number: 8006481Abstract: A method and apparatus are described to selectively reduce NOx emissions of an internal combustion engine. An exhaust aftertreatment system includes an injection device operative to dispense a hydrocarbon reductant upstream of a silver-alumina catalytic reactor device. A control system determines a NOx concentration and hydrocarbon/NOx ratio based upon selected parameters of the exhaust gas feedstream and dispenses hydrocarbon reductant during lean engine operation. Included is a method to control elements of the feedstream during lean operation. The hydrocarbon reductant may include engine fuel.Type: GrantFiled: September 20, 2006Date of Patent: August 30, 2011Assignee: GM Global Technology Operations LLCInventors: Steven J. Schmieg, Richard J. Blint, Ling Deng, Michael B. Viola, Jong-Hwan Lee
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Patent number: 7943548Abstract: Catalysts, systems and methods are described to reduce NOx emissions of an internal combustion engine. In one embodiment, an emissions treatment system for an exhaust stream is provided having a catalyst comprising silver and a platinum group metal on a particulate alumina support, the atomic fraction of the platinum group metal being less than or equal to about 0.25. Methods of manufacturing catalysts are described in which silver is impregnated on alumina particles.Type: GrantFiled: September 20, 2006Date of Patent: May 17, 2011Assignee: BASF CorporationInventors: Christopher R. Castellano, Ahmad Moini, Gerald S. Koermer, Howard Furbeck, Steven J. Schmieg, Richard J. Blint
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Publication number: 20100233045Abstract: A sulfur tolerant oxidation catalyst with appreciable NO and HC oxidation capabilities has been developed for use in any component of an exhaust aftertreatment system for a lean-burn engine where the oxidation of at least NO is desired. Several non-exclusive examples of such components where the oxidation catalyst may be employed include a DOC and a LNT. The oxidation catalyst may comprise perovskite oxide particles that support palladium particles. The ability of the palladium supported perovskite oxide particles to concurrently oxidize NO and HC's can significantly diminish or altogether eliminate the use of platinum in the exhaust aftertreatment system for at least NO oxidation. The oxidation catalyst, moreover, may exhibit superior thermal durability and better NO and HC oxidation activities than platinum in some instances.Type: ApplicationFiled: March 9, 2010Publication date: September 16, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Chang H. Kim, Wei Li, Richard J. Blint
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Publication number: 20080066456Abstract: A method and apparatus are described to selectively reduce NOx emissions of an internal combustion engine. An exhaust aftertreatment system comprises an injection device operative to dispense a hydrocarbon reductant upstream of a silver-alumina catalytic reactor device. A control system determines a NOx concentration and hydrocarbon/NOx ratio based upon selected parameters of the exhaust gas feedstream and dispenses hydrocarbon reductant during lean engine operation. Included is a method to control elements of the feedstream during lean operation. The hydrocarbon reductant may comprise engine fuel.Type: ApplicationFiled: September 20, 2006Publication date: March 20, 2008Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Steven J. Schmieg, Richard J. Blint, Ling Deng, Michael B. Viola, Jong-Hwan Lee
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Publication number: 20080070778Abstract: Catalysts, systems and methods are described to reduce NOx emissions of an internal combustion engine. In one embodiment, an emissions treatment system for an exhaust stream is provided having a catalyst comprising silver and a platinum group metal on a particulate alumina support, the atomic fraction of the platinum group metal being less than or equal to about 0.25. Methods of manufacturing catalysts are described in which silver is impregnated on alumina particles.Type: ApplicationFiled: September 20, 2006Publication date: March 20, 2008Inventors: Christopher R. Castellano, Ahmad Moini, Gerald S. Koermer, Howard Furbeck, Steven J. Schmieg, Richard J. Blint
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Patent number: 6936562Abstract: Certain metal-exchanged SUZ-4 zeolites have been prepared that have catalytic activity for the reduction of NOx in the exhaust of a hydrocarbon or alcohol fueled engine operated under fuel lean conditions. Initially the SUZ-4 zeolite contains alkali metal cations such as Li+, Na+, K+ and/or Cs+. These alkali metal cation-containing zeolites are partially exchanged with at least one of copper (II), silver (I), iron (III) or cobalt (II) ions. The resulting partially exchanged SUZ-4 zeolites display such activity and are stable under extreme hydrothermal aging conditions.Type: GrantFiled: September 4, 2003Date of Patent: August 30, 2005Assignee: General Motors CorporationInventors: Byong Kwon Cho, Richard J. Blint, Ayyappan Subbiah
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Publication number: 20040043891Abstract: Certain metal-exchanged SUZ-4 zeolites have been prepared that have catalytic activity for the reduction of NOx in the exhaust of a hydrocarbon or alcohol fueled engine operated under fuel lean conditions. Initially the SUZ-4 zeolite contains alkali metal cations such as Li+, Na+, K+ and/or Cs+. These alkali metal cation-containing zeolites are partially exchanged with at least one of copper (II), silver (I), iron (III) or cobalt (II) ions. The resulting partially exchanged SUZ-4 zeolites display such activity and are stable under extreme hydrothermal aging conditions.Type: ApplicationFiled: September 4, 2003Publication date: March 4, 2004Applicant: General Motors CorporationInventors: Byong Kwon Cho, Richard J. Blint, Ayyappan Subbiah
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Patent number: 6645448Abstract: Certain metal-exchanged SUZ-4 zeolites have been prepared that have catalytic activity for the reduction of NOx in the exhaust of a hydrocarbon or alcohol fueled engine operated under fuel lean conditions. Initially the SUZ-4 zeolite contains alkali metal cations such as Li+, Na+, K+ and/or Cs+. These alkali metal cation-containing zeolites are partially exchanged with at least one of copper (II), silver (I), iron (III) or cobalt (II) ions. The resulting partially exchanged SUZ-4 zeolites display such activity and are stable under extreme hydrothermal aging conditions.Type: GrantFiled: October 18, 2001Date of Patent: November 11, 2003Assignee: General Motors CorporationInventors: Byong Kwon Cho, Richard J. Blint, Ayyappan Subbiah
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Publication number: 20030077213Abstract: Certain metal-exchanged SUZ-4 zeolites have been prepared that have catalytic activity for the reduction of NOx in the exhaust of a hydrocarbon or alcohol fueled engine operated under fuel lean conditions. Initially the SUZ-4 zeolite contains alkali metal cations such as Li+, Na+, K+ and/or Cs+. These alkali metal cation-containing zeolites are partially exchanged with at least one of copper (II), silver (I), iron (III) or cobalt (II) ions. The resulting partially exchanged SUZ-4 zeolites display such activity and are stable under extreme hydrothermal aging conditions.Type: ApplicationFiled: October 18, 2001Publication date: April 24, 2003Inventors: Byong Kwon Cho, Richard J. Blint, Ayyappan Subbiah