Patents by Inventor Miho Hatanaka
Miho Hatanaka 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: 20240149260Abstract: The exhaust gas purification device includes a substrate, a first catalyst layer, and a second catalyst layer. The substrate includes an upstream end and a downstream end. The first catalyst layer contains first catalyst particles and lies on the substrate across a first region extending between the upstream end and a first position. The first position is at a first distance from the upstream end toward the downstream end. The second catalyst layer contains second catalyst particles and lies on the first catalyst layer across the first region. The second catalyst layer is provided with pores. Pore connectivity of the second catalyst layer is 5% to 35%. A mean value of areas of the pores of the second catalyst layer in a cross-sectional backscattered electron image of the second catalyst layer may be 0.7 ?m2 to 9.0 ?m2.Type: ApplicationFiled: November 7, 2023Publication date: May 9, 2024Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, CATALER CORPORATIONInventors: Nobusuke KABASHIMA, Toshio YAMAMOTO, Miho HATANAKA, Tetsuya SHINOZAKI
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Patent number: 11969712Abstract: A catalyst for purification of exhaust gas in which Pd-based nanoparticles and ceria nanoparticles are supported on a composite metal oxide support containing alumina, ceria, and zirconia, wherein a molar ratio (Ce/Pd) of Ce and Pd supported on the support is 1 to 8, a proximity ? between Pd and Ce is 0.15 to 0.50, wherein the proximity ? is determined, based on Pd and Ce distribution maps in an element mapping image of energy dispersive X-ray analysis, by the following formula (1): ? = ? j = 0 N - 1 ? ? i = 0 M - 1 ? ( ( I ? ( i , j ) - I ave ) ? ( T ? ( i , j ) - T ave ) ) ? j = 0 N - 1 ? ? i = 0 M - 1 ? ( I ? ( i , j ) - I ave ) 2 - ? j = 0 N - 1 ? ? i = 0 M - 1 ? ( T ? ( i , j ) - T ave ) 2 , ( 1 ) a Pd dispersity after a heat-resistance test at 1050° C. for 25 hours is 0.8% or more.Type: GrantFiled: November 2, 2022Date of Patent: April 30, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Naoki Kumatani, Akira Morikawa, Masaoki Iwasaki, Miho Hatanaka, Taizo Yoshinaga, Masahide Miura, Takahiro Hayashi
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Publication number: 20230302435Abstract: A catalyst for purification of exhaust gas in which Pd-based nanoparticles and ceria nanoparticles represented by CeO2-x, (0?x<0.5) are supported on a composite metal oxide support containing alumina, ceria, and zirconia, wherein a molar ratio (Ce/Pd) of Ce and Pd supported on the support is 1 to 8, a proximity ? between Pd and Ce is 0.15 to 0.50, wherein the proximity ? is determined, based on Pd and Ce distribution maps in an element mapping image of energy dispersive X-ray analysis, by the following formula (1) ? = ? j = 0 N - 1 ? ? i = 0 M - 1 ? ( ( I ? ( i , j ) - I ave ) ? ( T ? ( i , j ) - T ave ) ) ? j = 0 N - 1 ? ? i = 0 M - 1 ? ( I ? ( i , j ) - I ave ) 2 - ? j = 0 N - 1 ? ? i = 0 M - 1 ? ( T ? ( i , j ) - T ave ) 2 , ( 1 ) and a Pd dispersity after a heat-resistance test is 0.Type: ApplicationFiled: November 2, 2022Publication date: September 28, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Naoki KUMATANI, Akira MORIKAWA, Masaoki IWASAKI, Miho HATANAKA, Taizo YOSHINAGA, Masahide MIURA, Takahiro HAYASHI
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Patent number: 10329984Abstract: An oxygen storage/release material includes: a ceria-zirconia composite oxide porous body that has at least one ordered phase of a pyrochlore phase and a ? phase, and that has a central pore diameter of 70 nm to 1 ?m as measured by a mercury penetration method, and in which a cumulative pore volume of pores that each have a pore diameter in the range of 0.5 times to 2 times the central pore diameter is 40% or more of the cumulative pore volume of pores that each have a pore diameter in the range of 10 nm to 10 ?m as measured by the mercury penetration method.Type: GrantFiled: March 5, 2018Date of Patent: June 25, 2019Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventors: Miho Hatanaka, Akihiko Suda
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Publication number: 20180252139Abstract: An oxygen storage/release material includes: a ceria-zirconia composite oxide porous body that has at least one ordered phase of a pyrochlore phase and a ? phase, and that has a central pore diameter of 70 nm to 1 ?m as measured by a mercury penetration method, and in which a cumulative pore volume of pores that each have a pore diameter in the range of 0.5 times to 2 times the central pore diameter is 40% or more of the cumulative pore volume of pores that each have a pore diameter in the range of 10 nm to 10 ?m as measured by the mercury penetration method.Type: ApplicationFiled: March 5, 2018Publication date: September 6, 2018Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventors: Miho HATANAKA, Akihiko SUDA
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Patent number: 9616386Abstract: A catalyst for purification of exhaust gas, comprising a first catalyst comprising: a first catalyst support comprising a first composite oxide composed of alumina, zirconia, and titania, and ceria supported on a surface of the first composite oxide in an amount of 0.5 to 10 parts by mass relative to 100 parts by mass of the first composite oxide; and a first noble metal supported on a surface of the first catalyst support in an amount of 0.05 to 5.0 parts by mass in terms of metal relative to 100 parts by mass of the first catalyst support.Type: GrantFiled: March 4, 2016Date of Patent: April 11, 2017Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventors: Miho Hatanaka, Toshiyuki Tanaka
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Patent number: 9539564Abstract: A method for producing iron-supporting chabazite-type zeolite, comprising the following steps in order: mixing iron(II) chloride and chabazite-type zeolite, heat treating under a reducing atmosphere, and a Hydrogen reducing.Type: GrantFiled: May 29, 2015Date of Patent: January 10, 2017Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, THE UNIVERSITY OF TOKYOInventors: Masaya Ibe, Masaru Ogura, Masaoki Iwasaki, Miho Hatanaka
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Publication number: 20160279573Abstract: A catalyst for purification of exhaust gas, comprising a first catalyst comprising: a first catalyst support comprising a first composite oxide composed of alumina, zirconia, and titania, and ceria supported on a surface of the first composite oxide in an amount of 0.5 to 10 parts by mass relative to 100 parts by mass of the first composite oxide; and a first noble metal supported on a surface of the first catalyst support in an amount of 0.05 to 5.0 parts by mass in terms of metal relative to 100 parts by mass of the first catalyst support.Type: ApplicationFiled: March 4, 2016Publication date: September 29, 2016Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventors: Miho HATANAKA, Toshiyuki TANAKA
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Patent number: 9254475Abstract: An exhaust gas purification catalyst includes a composite oxide support, and a precious metal catalyst supported on the composite oxide support. The composite oxide support includes alumina, zirconia, ceria, a first additive element oxide and a second additive element oxide. The first additive element oxide contains an additive element selected from the group consisting of rare earth elements excluding cerium and alkali earth elements. The second additive element oxide contains an additive element selected from the group consisting of rare earth elements excluding cerium and alkali earth elements. In the composite oxide support, alumina is contained in a range of 30 to 40% by mass and zirconia is contained in a range of 36 to 46% by mass.Type: GrantFiled: February 27, 2013Date of Patent: February 9, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshinori Saito, Yuki Aoki, Toshitaka Tanabe, Miho Hatanaka, Naoki Takahashi, Akira Morikawa
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Publication number: 20150343425Abstract: [PURPOSE] There is provided a method for producing iron-supporting chabazite-type zeolite. [SOLUTION MEANS] A method for producing iron-supporting chabazite-type zeolite, comprising the following steps in order: mixing iron(II) chloride and chabazite-type zeolite, heat treating under a reducing atmosphere, and a hydrogen reducing.Type: ApplicationFiled: May 29, 2015Publication date: December 3, 2015Inventors: Masaya IBE, Masaru OGURA, Masaoki IWASAKI, Miho HATANAKA
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Publication number: 20150045212Abstract: An exhaust gas purification catalyst includes a composite oxide support, and a precious metal catalyst supported on the composite oxide support. The composite oxide support includes alumina, zirconia, ceria, a first additive element oxide and a second additive element oxide. The first additive element oxide contains an additive element selected from the group consisting of rare earth elements excluding cerium and alkali earth elements. The second additive element oxide contains an additive element selected from the group consisting of rare earth elements excluding cerium and alkali earth elements. In the composite oxide support, alumina is contained in a range of 30 to 40% by mass and zirconia is contained in a range of 36 to 46% by mass.Type: ApplicationFiled: February 27, 2013Publication date: February 12, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshinori Saito, Yuki Aoki, Toshitaka Tanabe, Miho Hatanaka, Naoki Takahashi, Akira Morikawa
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Patent number: 8580705Abstract: An exhaust gas purifying catalyst includes a substrate that defines an exhaust gas passage; a lower catalyst layer formed over the substrate, and an upper catalyst layer formed over the lower catalyst layer. The lower catalyst layer has a lower catalytic precious metal that contains at least one of Pt and Pd, and a lower-layer carrier that supports the lower catalytic precious metal. The upper catalyst layer has an upper catalytic precious metal that contains Rh, and an upper-layer carrier that supports the upper catalytic precious metal. The upper-layer carrier includes an inorganic mixed oxide that contains Ce, Zr, Al, Nd, and at least one element selected from the group consisting of rare earth elements other than Ce and alkaline earth elements. The Nd is unevenly distributed in covering layers that covers surfaces of interior regions within the inorganic mixed oxide.Type: GrantFiled: December 23, 2010Date of Patent: November 12, 2013Assignees: Toyota Jidosha Kabushiki Kaisha, Cataler Corporation, Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Yuki Aoki, Takeru Yoshida, Shingo Sakagami, Masaaki Kawai, Miho Hatanaka, Toshitaka Tanabe, Naoki Takahashi
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Publication number: 20130029838Abstract: An exhaust gas purifying catalyst includes a substrate that defines an exhaust gas passage; a lower catalyst layer formed over the substrate, and an upper catalyst layer formed over the lower catalyst layer. The lower catalyst layer has a lower catalytic precious metal that contains at least one of Pt and Pd, and a lower-layer carrier that supports the lower catalytic precious metal. The upper catalyst layer has an upper catalytic precious metal that contains Rh, and an upper-layer carrier that supports the upper catalytic precious metal. The upper-layer carrier includes an inorganic mixed oxide that contains Ce, Zr, Al, Nd, and at least one element selected from the group consisting of rare earth elements other than Ce and alkaline earth elements. The Nd is unevenly distributed in covering layers that covers surfaces of interior regions within the inorganic mixed oxide.Type: ApplicationFiled: December 23, 2010Publication date: January 31, 2013Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, CATALER CORPORATIONInventors: Yuki Aoki, Takeru Yoshida, Shingo Sakagami, Masaaki Kawai, Miho Hatanaka, Toshitaka Tanabe, Naoki Takahashi
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Patent number: 8225601Abstract: An exhaust gas purification system includes: a catalyst (3) provided in an exhaust gas passage of an internal combustion engine (1) and having a carrier containing a basic oxide and platinum carried on the carrier; a catalyst (4) for purifying NOx; and oxygen supply means (2).Type: GrantFiled: March 29, 2007Date of Patent: July 24, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Nobuyuki Takagi, Masahide Miura, Shinichi Matsumoto, Toshitaka Tanabe, Yasutaka Nagai, Miho Hatanaka, Kazuhiko Dohmae, Toshio Yamamoto, Yasuo Ikeda
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Patent number: 8105561Abstract: A catalyst for purification of exhaust gas in which a noble metal is supported on a metal-oxide support wherein, in a oxidation atmosphere, the noble metal exists on the surface of the support in high oxidation state, and the noble metal binds with a cation of the support via an oxygen atom on the surface of the support to form a surface oxide layer and, in a reduction atmosphere, the noble metal exists on the surface of the support in a metal state, and an amount of noble metal exposed at the surface of the support, measured by CO chemisorption, is 10% or more in atomic ratio to a whole amount of the noble metal supported on the support.Type: GrantFiled: December 1, 2006Date of Patent: January 31, 2012Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Toyota Jidosha Kabushiki KaishaInventors: Miho Hatanaka, Toshitaka Tanabe, Yasutaka Nagai, Toshio Yamamoto, Kazuhiko Dohmae, Nobuyuki Takagi, Masahide Miura, Yasuo Ikeda
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Patent number: 8043992Abstract: A particulate inorganic mixed oxide comprising: aluminum; zirconium; cerium; lanthanum and an additional element selected from the group consisting of neodymium and praseodymium, wherein the inorganic mixed oxide has at least 80% of primary particles with article diameters of 100 nm or less, and at least a part of the primary particles have an enriched surface region where the additional element is locally increased in a surface layer portion thereof.Type: GrantFiled: October 17, 2008Date of Patent: October 25, 2011Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Toyota Jidosha Kabushiki Kaisha, Cataler CorporationInventors: Miho Hatanaka, Toshitaka Tanabe, Naoki Takahashi, Takeru Yoshida, Yuki Aoki
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Publication number: 20100227757Abstract: A particulate inorganic mixed oxide comprising: aluminum; zirconium; cerium; and first and second additional elements each selected from the group consisting of rare earth elements other than cerium and alkaline earth elements, wherein a content of aluminum in the inorganic mixed oxide is 60 to 90 at %, in terms of element content, relative to a total amount of elements which form cations in the inorganic mixed oxide ; a content of cerium in the inorganic mixed oxide is 0.Type: ApplicationFiled: October 17, 2008Publication date: September 9, 2010Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Miho Hatanaka, Toshitaka Tanabe, Naoki Takahashi, Takeru Yoshida, Yuki Aoki
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Publication number: 20090266053Abstract: An exhaust gas purification system includes: at least two catalysts (1a, 1b) disposed in parallel with each other on an exhaust gas passage of an internal combustion engine (3) and having a carrier containing a basic oxide and platinum carried on the carrier; and oxygen supply means (2) for supplying oxygen to the catalysts (1a, 1b).Type: ApplicationFiled: March 29, 2007Publication date: October 29, 2009Inventors: Nobuyuki Takagi, Masahide Miura, Shinichi Matsumoto, Toshitaka Tanabe, Yasutaka Nagai, Miho Hatanaka, Kazuhiko Dohmae, Toshio Yamamoto, Yasuo Ikeda
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Publication number: 20090170689Abstract: A catalyst for purification of exhaust gas in which a noble metal is supported on a metal-oxide support wherein, in a oxidation atmosphere, the noble metal exists on the surface of the support in high oxidation state, and the noble metal binds with a cation of the support via an oxygen atom on the surface of the support to form a surface oxide layer and, in a reduction atmosphere, the noble metal exists on the surface of the support in a metal state, and an amount of noble metal exposed at the surface of the support, measured by CO chemisorption, is 10% or more in atomic ratio to a whole amount of the noble metal supported on the support.Type: ApplicationFiled: December 1, 2006Publication date: July 2, 2009Applicants: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Miho Hatanaka, Toshitaka Tanabe, Yasutaka Nagai, Toshio Yamamoto, Kazuhiko Dohmae, Nobuyuki Takagi, Masahide Miura, Yasuo Ikeda
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Publication number: 20090104088Abstract: An exhaust gas purification system includes: a catalyst (3) provided in an exhaust gas passage of an internal combustion engine (1) and having a carrier containing a basic oxide and platinum carried on the carrier; a catalyst (4) for purifying NOx; and oxygen supply means (2).Type: ApplicationFiled: March 29, 2007Publication date: April 23, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Nobuyuki Takagi, Masahide Miura, Shinichi Matsumoto, Toshitaka Tanabe, Yasutaka Nagai, Miho Hatanaka, Kazuhiko Dohmae, Toshio Yamamoto, Yasuo Ikeda