Patents by Inventor Satoshi Matsueda
Satoshi Matsueda 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: 20140235431Abstract: An exhaust gas-purifying catalyst includes a substrate, and a catalytic layer facing the substrate and including a precious metal, alumina, an oxygen storage material, and a sulfate of an alkaline-earth metal having an average particle diameter falling within a range of 0.01 to 0.70 ?m, the average particle diameter being obtained by observation using a scanning electron microscope. Another exhaust gas-purifying catalyst includes a substrate, and a catalytic layer formed on the substrate using slurry containing a precious metal, alumina, an oxygen storage material, and a sulfate of an alkaline-earth metal having an average particle diameter falling within a range of 0.01 to 0.70 ?m, the average particle diameter being obtained by observation using a scanning electron microscope.Type: ApplicationFiled: April 23, 2014Publication date: August 21, 2014Applicant: CATALER CORPORATIONInventors: Satoshi Matsueda, Akimasa Hirai, Kenichi Taki, Yuji Yabuzaki
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Patent number: 8741799Abstract: An exhaust gas-purifying catalyst includes a substrate, and a catalytic layer facing the substrate and including a precious metal, alumina, an oxygen storage material, and a sulfate of an alkaline-earth metal having an average particle diameter falling within a range of 0.01 to 0.70 ?m, the average particle diameter being obtained by observation using a scanning electron microscope. Another exhaust gas-purifying catalyst includes a substrate, and a catalytic layer formed on the substrate using slurry containing a precious metal, alumina, an oxygen storage material, and a sulfate of an alkaline-earth metal having an average particle diameter falling within a range of 0.01 to 0.70 ?m, the average particle diameter being obtained by observation using a scanning electron microscope.Type: GrantFiled: November 28, 2011Date of Patent: June 3, 2014Assignee: Cataler CorporationInventors: Satoshi Matsueda, Akimasa Hirai, Kenichi Taki, Yuji Yabuzaki
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Patent number: 8580706Abstract: An exhaust gas-purifying catalyst according to the present invention includes a substrate, a first catalytic layer facing the substrate and includes at least one precious metal selected from the group consisting of palladium and platinum, and alumina doped with an alkaline-earth metal element, and a second catalytic layer facing the substrate with the first catalytic layer interposed therebetween or intervening between the substrate and the first catalytic layer, the second catalytic layer includes rhodium and alumina doped with the alkaline-earth metal element.Type: GrantFiled: November 22, 2011Date of Patent: November 12, 2013Assignee: Cataler CorporationInventors: Satoshi Matsueda, Akimasa Hirai, Kenichi Taki, Yuji Yabuzaki
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Patent number: 8569198Abstract: An exhaust gas-purifying catalyst includes first particles of oxygen storage material, second particles of one or more alkaline-earth metal elements and/or compounds thereof interposed between the first particles, and third particles of one or more precious metal elements interposed between the first particles. A spectrum of a first characteristic X-ray intensity for one of the one or more alkaline-earth metal elements and a spectrum of a second characteristic X-ray intensity for one of the one or more precious metal elements that are obtained by performing a line analysis using energy-dispersive X-ray spectrometry along a length of 500 nm have a correlation coefficient ?(AE,PM) of 0.70 or more.Type: GrantFiled: February 22, 2012Date of Patent: October 29, 2013Assignee: Cataler CorporationInventors: Sho Hoshino, Akimasa Hirai, Kenichi Taki, Keiichi Narita, Satoshi Matsueda, Asuka Hori, Masahiro Kusaka
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Patent number: 8546296Abstract: An exhaust gas-purifying catalyst includes a substrate, and a catalytic layer supported by the substrate. The catalytic layer includes a support made of alumina, an oxygen storage material, an alkaline earth metal and/or a compound of alkaline-earth metal selectively supported by a surface of the support and dispersed on the surface of the support, and a precious metal supported by the surface of the support. A ratio of a number of moles of the alkaline-earth metal in the catalytic layer with respect to a volumetric capacity of the exhaust gas-purifying catalyst falls within a range of 0.0004 mol/L to 0.35 mol/L.Type: GrantFiled: December 15, 2011Date of Patent: October 1, 2013Assignee: Cataler CorporationInventors: Yuji Yabuzaki, Akimasa Hirai, Kenichi Taki, Tomohito Mizukami, Satoshi Matsueda
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Patent number: 8361925Abstract: The exhaust gas-purifying catalyst includes at least one of a first composite oxide represented by a formula A(Al2-xBx)O4 and a second composite oxide represented by a formula (Al2-yCy)O3, wherein element A is a divalent transition metal other than platinum-group elements, each of elements B and C is a transition metal other than platinum-group elements, x satisfies 0<x<2, and y satisfies 0<y<2.Type: GrantFiled: April 22, 2010Date of Patent: January 29, 2013Assignees: Cataler Corporation, Daihatsu Motor Co., Ltd.Inventors: Satoshi Matsueda, Mareo Kimura, Hiroto Yoshida, Keiichi Narita, Hirohisa Tanaka, Mari Uenisha, Masashi Taniguchi
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Patent number: 8318632Abstract: An exhaust gas purification catalyst includes a substrate, and a first catalyst layer formed on the substrate, the first catalyst layer containing palladium and/or platinum and alumina doped with an alkaline-earth metal element. The exhaust gas purification catalyst has a correlation coefficient ?Al,AE given by the following formula of 0.75 or more: ? Al , AE = C Al , AE ? Al ? ? AE .Type: GrantFiled: June 17, 2011Date of Patent: November 27, 2012Assignee: Cataler CorporationInventors: Satoshi Matsueda, Akimasa Hirai, Kenichi Taki, Keiichi Narita, Yuji Yabuzaki, Daisuke Ochiai
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Publication number: 20120149557Abstract: An exhaust gas-purifying catalyst includes first particles of oxygen storage material, second particles of one or more alkaline-earth metal elements and/or compounds thereof interposed between the first particles, and third particles of one or more precious metal elements interposed between the first particles. A spectrum of a first characteristic X-ray intensity for one of the one or more alkaline-earth metal elements and a spectrum of a second characteristic X-ray intensity for one of the one or more precious metal elements that are obtained by performing a line analysis using energy-dispersive X-ray spectrometry along a length of 500 nm have a correlation coefficient ?(AE,PM) of 0.70 or more.Type: ApplicationFiled: February 22, 2012Publication date: June 14, 2012Inventors: Sho Hoshino, Akimasa Hirai, Kenichi Taki, Keiichi Narita, Satoshi Matsueda, Asuka Hori, Masahiro Kusaka
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Patent number: 8187996Abstract: An object of the present invention is to provide an exhaust gas-purifying catalyst containing a composite oxide catalyst and a refractory support and being less prone to cause a decrease in its activity even when used at high temperatures in an atmosphere with high oxygen concentration. An exhaust gas-purifying catalyst includes a composite oxide catalyst containing rare-earth element, alkaline-earth element and precious metal, a part of the rare-earth element and a part of the alkaline-earth element forming composite oxide, and the composite oxide and a part of the precious metal forming solid solution, and a refractory support supporting the composite oxide catalyst and including at least one of a first composite oxide represented by a general formula AB2O4, a second composite oxide having perovskite structure represented by a general formula LMO3, and a third composite oxide having pyrochlore structure represented by a general formula X2Y2O7.Type: GrantFiled: April 21, 2011Date of Patent: May 29, 2012Assignee: Cataler CorporationInventors: Satoshi Matsueda, Mareo Kimura, Keiichi Narita
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Publication number: 20120122672Abstract: An exhaust gas-purifying catalyst includes first particles of oxygen storage material, second particles of one or more rare-earth elements other than cerium and/or compounds thereof interposed between the first particles, and third particles of one or more precious metal elements interposed between the first particles, wherein a spectrum of a characteristic X-ray intensity for one of the rare-earth element(s) and a spectrum of a characteristic X-ray intensity for one of the precious metal element(s) that are obtained by performing a line analysis using energy-dispersive X-ray spectrometry along a length of 500 nm have a correlation coefficient of 0.68 or more.Type: ApplicationFiled: January 23, 2012Publication date: May 17, 2012Inventors: Satoshi Matsueda, Akimasa Hirai, Kenichi Taki, Keiichi Narita, Asuka Hori, Masahiro Kusaka
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Publication number: 20120122667Abstract: An exhaust gas-purifying catalyst includes first particles of oxygen storage material, second particles of one or more acidic oxides interposed between the first particles, and third particles of one or more precious metal elements interposed between the first particles, wherein a spectrum of a characteristic X-ray intensity for one of constituent elements of the acidic oxide(s) other than oxygen and a spectrum of a characteristic X-ray intensity for one of the precious metal element(s) that are obtained by performing a line analysis using energy-dispersive X-ray spectrometry along a length of 500 nm have a correlation coefficient of 0.70 or more.Type: ApplicationFiled: January 23, 2012Publication date: May 17, 2012Inventors: Satoshi Matsueda, Akimasa Hirai, Kenichi Taki, Keiichi Narita, Asuka Hori, Masahiro Kusaka
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Publication number: 20120094827Abstract: The exhaust gas-purifying catalyst includes a first oxide particle with an oxygen storage capacity, one or more second oxide particles partially or entirely covering a surface of the first oxide particle and having an oxygen storage capacity lower than that of the first oxide particle, an average particle diameter Dav of the one or more second oxide particles being smaller than that of the first oxide particle, and precious metal particles supported on at least one of the second oxide particle.Type: ApplicationFiled: October 14, 2011Publication date: April 19, 2012Inventors: Satoshi Matsueda, Akimasa Hirai, Kenichi Taki, Yuji Yabuzaki, Sho Hoshino
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Publication number: 20120088655Abstract: An exhaust gas-purifying catalyst includes a substrate, and a catalytic layer supported by the substrate. The catalytic layer includes a support made of alumina, an oxygen storage material, an alkaline earth metal and/or a compound of alkaline-earth metal selectively supported by a surface of the support and dispersed on the surface of the support, and a precious metal supported by the surface of the support. A ratio of a number of moles of the alkaline-earth metal in the catalytic layer with respect to a volumetric capacity of the exhaust gas-purifying catalyst falls within a range of 0.0004 mol/L to 0.35 mol/L.Type: ApplicationFiled: December 15, 2011Publication date: April 12, 2012Inventors: Yuji Yabuzaki, Akimasa Hirai, Kenichi Taki, Tomohito Mizukami, Satoshi Matsueda
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Publication number: 20120071318Abstract: An exhaust gas-purifying catalyst includes a substrate, and a catalytic layer facing the substrate and including a precious metal, alumina, an oxygen storage material, and a sulfate of an alkaline-earth metal having an average particle diameter falling within a range of 0.01 to 0.70 ?m, the average particle diameter being obtained by observation using a scanning electron microscope. Another exhaust gas-purifying catalyst includes a substrate, and a catalytic layer formed on the substrate using slurry containing a precious metal, alumina, an oxygen storage material, and a sulfate of an alkaline-earth metal having an average particle diameter falling within a range of 0.01 to 0.70 ?m, the average particle diameter being obtained by observation using a scanning electron microscope.Type: ApplicationFiled: November 28, 2011Publication date: March 22, 2012Inventors: Satoshi Matsueda, Akimasa Hirai, Kenichi Taki, Yuji Yabuzaki
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Publication number: 20120065058Abstract: An exhaust gas-purifying catalyst according to the present invention includes a substrate, a first catalytic layer facing the substrate and includes at least one precious metal selected from the group consisting of palladium and platinum, and alumina doped with an alkaline-earth metal element, and a second catalytic layer facing the substrate with the first catalytic layer interposed therebetween or intervening between the substrate and the first catalytic layer, the second catalytic layer includes rhodium and alumina doped with the alkaline-earth metal element.Type: ApplicationFiled: November 22, 2011Publication date: March 15, 2012Inventors: Satoshi Matsueda, Akimasa Hirai, Kenichi Taki, Yuji Yabuzaki
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Patent number: 8133839Abstract: An exhaust gas-purifying catalyst (1) contains a rare-earth element, an alkaline-earth element, zirconium and a precious metal, wherein an atomic ratio of the alkaline-earth element with respect to a sum of the rare-earth element and the zirconium is 10 atomic % or more, a part of the rare-earth element and a part of zirconium form a composite oxide with at least a part of the alkaline-earth element, and the composite oxide and a part of the precious metal form a solid solution.Type: GrantFiled: June 2, 2006Date of Patent: March 13, 2012Assignees: Cataler Corporation, Daihatsu Motor Co., Ltd.Inventors: Satoshi Matsueda, Mareo Kimura, Akimasa Hirai, Keiichi Narita, Hirohisa Tanaka, Mari Uenishi, Isao Tan, Masashi Taniguchi
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Patent number: 8097556Abstract: An object of the present invention is to provide an exhaust gas-purifying catalyst that is less prone to cause a decrease in its activity even when used at high temperatures in an atmosphere whose oxygen concentration is high. An exhaust gas-purifying catalyst of the present invention includes a composite oxide of alkaline-earth metal and aluminum, and platinum, wherein at least a part of the composite oxide and at least a part of the platinum forms a solid solution.Type: GrantFiled: September 4, 2008Date of Patent: January 17, 2012Assignee: Cataler CorporationInventors: Satoshi Matsueda, Mareo Kimura, Hirohisa Tanaka, Mari Uenishi
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Publication number: 20110245076Abstract: An exhaust gas purification catalyst includes a substrate, and a first catalyst layer formed on the substrate, the first catalyst layer containing palladium and/or platinum and alumina doped with an alkaline-earth metal element. The exhaust gas purification catalyst has a correlation coefficient ?Al,AE given by the following formula of 0.Type: ApplicationFiled: June 17, 2011Publication date: October 6, 2011Inventors: Satoshi Matsueda, Akimasa Hirai, Kenichi Taki, Keiichi Narita, Yuji Yabuzaki, Daisuke Ochiai
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Publication number: 20110207601Abstract: An object of the present invention is to provide an exhaust gas-purifying catalyst containing a composite oxide catalyst and a refractory support and being less prone to cause a decrease in its activity even when used at high temperatures in an atmosphere with high oxygen concentration. An exhaust gas-purifying catalyst includes a composite oxide catalyst containing rare-earth element, alkaline-earth element and precious metal, a part of the rare-earth element and a part of the alkaline-earth element forming composite oxide, and the composite oxide and a part of the precious metal forming solid solution, and a refractory support supporting the composite oxide catalyst and including at least one of a first composite oxide represented by a general formula AB2O4, a second composite oxide having perovskite structure represented by a general formula LMO3, and a third composite oxide having pyrochlore structure represented by a general formula X2Y2O7.Type: ApplicationFiled: April 21, 2011Publication date: August 25, 2011Applicant: CATALER CORPORATIONInventors: Satoshi MATSUEDA, Mareo Kimura, Keiichi Narita
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Patent number: 7956005Abstract: An object of the present invention is to provide an exhaust gas-purifying catalyst containing a composite oxide catalyst and a refractory support and being less prone to cause a decrease in its activity even when used at high temperatures in an atmosphere with high oxygen concentration. An exhaust gas-purifying catalyst includes a composite oxide catalyst containing rare-earth element, alkaline-earth element and precious metal, a part of the rare-earth element and a part of the alkaline-earth element forming composite oxide, and the composite oxide and a part of the precious metal forming solid solution, and a refractory support supporting the composite oxide catalyst and including at least one of a first composite oxide represented by a general formula AB2O4, a second composite oxide having perovskite structure represented by a general formula LMO3, and a third composite oxide having pyrochlore structure represented by a general formula X2Y2O7.Type: GrantFiled: March 28, 2008Date of Patent: June 7, 2011Assignee: Cataler CorporationInventors: Satoshi Matsueda, Mareo Kimura, Keiichi Narita