Patents by Inventor Norihiko Aono
Norihiko Aono 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: 11701615Abstract: This exhaust gas purifying catalyst is provided with a substrate and a catalyst layer formed on a surface of the substrate. The catalyst layer contains zeolite particles that support a metal, and a rare earth element-containing compound that contains a rare earth element. The rare earth element-containing compound is added in such an amount that the molar ratio of the rare earth element relative to Si contained in the zeolite is 0.001 to 0.014 in terms of oxides.Type: GrantFiled: October 26, 2021Date of Patent: July 18, 2023Assignee: Cataler CorporationInventors: Shu Miyasaka, Eriko Tanaka, Norihiko Aono, Mai Huong Tran, Keigo Hori, Daisuke Sugioka
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Publication number: 20220176351Abstract: The present invention provides an exhaust gas purification catalyst having an excellent purification performance for purifying chemically stable methane. A catalyst material 30 includes a carrier 32 formed of alumina and a catalyst 34 formed of at least one of palladium and a palladium oxide directly supported on the carrier 32. A specific surface area of the carrier 32 is preferably 20 m2/g or more 90 m2/g or less. In one preferred aspect, a proportion of Pd(100) and PdO(101) in crystal planes of the catalyst 34 at a joint surface between the catalyst 34 and the carrier 32 is 20 number % or more.Type: ApplicationFiled: March 27, 2020Publication date: June 9, 2022Inventors: Naoto Fujita, Mai Huong Tran, Keiichi Narita, Norihiko Aono, Atsushi Satsuma
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Patent number: 11311859Abstract: The exhaust gas purification catalyst disclosed here is an exhaust gas purification catalyst disposed in the exhaust pipe of an internal combustion engine to purify nitrogen oxides contained in exhaust gas discharged from the internal combustion engine, provided with a silver alumina catalyst comprising at least alumina as a catalyst and silver supported on this alumina, wherein, in the silver alumina catalyst, the ratio of the peak intensity at a wave number of 1595 cm?1 to the peak intensity at a wave number of 1613 cm?1 by the pyridine IR method is at least 0.3, and the carried amount of the silver is 1.0 wt % to 6.0 wt % given 100 wt % as the total amount of the silver alumina catalyst.Type: GrantFiled: September 11, 2017Date of Patent: April 26, 2022Assignee: Cataler CorporationInventors: Keigo Hori, Norihiko Aono, Daisuke Oki, Yuya Kawano
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Publication number: 20220040635Abstract: This exhaust gas purifying catalyst is provided with a substrate and a catalyst layer formed on a surface of the substrate. The catalyst layer contains zeolite particles that support a metal, and a rare earth element-containing compound that contains a rare earth element. The rare earth element-containing compound is added in such an amount that the molar ratio of the rare earth element relative to Si contained in the zeolite is 0.001 to 0.014 in terms of oxides.Type: ApplicationFiled: October 25, 2021Publication date: February 10, 2022Inventors: Shu Miyasaka, Eriko Tanaka, Norihiko Aono, Mai Huong Tran, Keigo Hori, Daisuke Sugioka
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Publication number: 20220040636Abstract: This exhaust gas purifying catalyst is provided with a substrate and a catalyst layer formed on a surface of the substrate. The catalyst layer contains zeolite particles that support a metal, and a rare earth element-containing compound that contains a rare earth element. The rare earth element-containing compound is added in such an amount that the molar ratio of the rare earth element relative to Si contained in the zeolite is 0.001 to 0.014 in terms of oxides.Type: ApplicationFiled: October 26, 2021Publication date: February 10, 2022Inventors: Shu Miyasaka, Eriko Tanaka, Norihiko Aono, Mai Huong Tran, Keigo Hori, Daisuke Sugioka
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Patent number: 11202991Abstract: This exhaust gas purifying catalyst is provided with a substrate 10 and a catalyst layer 20 formed on a surface of the substrate 10. The catalyst layer 20 contains zeolite particles 22 that support a metal, and a rare earth element-containing compound 24 that contains a rare earth element. The rare earth element-containing compound 24 is added in such an amount that the molar ratio of the rare earth element relative to Si contained in the zeolite 22 is 0.001 to 0.014 in terms of oxides.Type: GrantFiled: February 19, 2018Date of Patent: December 21, 2021Assignee: Cataler CorporationInventors: Shu Miyasaka, Eriko Tanaka, Norihiko Aono, Mai Huong Tran, Keigo Hori, Daisuke Sugioka
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Patent number: 11167245Abstract: This exhaust gas purifying catalyst is provided with a substrate 10 and a catalyst layer 20 formed on a surface of the substrate 10. The catalyst layer 20 contains zeolite particles 22 that support a metal, and a rare earth element-containing compound 24 that contains a rare earth element. The rare earth element-containing compound 24 is added in such an amount that the molar ratio of the rare earth element relative to Si contained in the zeolite 22 is 0.001 to 0.014 in terms of oxides.Type: GrantFiled: February 19, 2018Date of Patent: November 9, 2021Assignee: Cataler CorporationInventors: Shu Miyasaka, Eriko Tanaka, Norihiko Aono, Mai Huong Tran, Keigo Hori, Daisuke Sugioka
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Publication number: 20200047119Abstract: This exhaust gas purifying catalyst is provided with a substrate 10 and a catalyst layer 20 formed on a surface of the substrate 10. The catalyst layer 20 contains zeolite particles 22 that support a metal, and a rare earth element-containing compound 24 that contains a rare earth element. The rare earth element-containing compound 24 is added in such an amount that the molar ratio of the rare earth element relative to Si contained in the zeolite 22 is 0.001 to 0.014 in terms of oxides.Type: ApplicationFiled: February 19, 2018Publication date: February 13, 2020Inventors: Shu MIYASAKA, Eriko TANAKA, Norihiko AONO, Mai Huong TRAN, Keigo HORI, Daisuke SUGIOKA
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Publication number: 20190201875Abstract: The exhaust gas purification catalyst disclosed here is an exhaust gas purification catalyst disposed in the exhaust pipe of an internal combustion engine to purify nitrogen oxides contained in exhaust gas discharged from the internal combustion engine, provided with a silver alumina catalyst comprising at least alumina as a catalyst and silver supported on this alumina, wherein, in the silver alumina catalyst, the ratio of the peak intensity at a wave number of 1595 cm?1 to the peak intensity at a wave number of 1613 cm?1 by the pyridine IR method is at least 0.3, and the carried amount of the silver is 1.0 wt % to 6.0 wt % given 100 wt % as the total amount of the silver alumina catalyst.Type: ApplicationFiled: September 11, 2017Publication date: July 4, 2019Inventors: Keigo Hori, Norihiko AONO, Daisuke OKI, Yuya KAWANO
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Patent number: 8071498Abstract: An exhaust gas purifying catalyst wherein the catalytic activity can be recovered over a wide temperature range is provided. Also provided are a method for recovering an exhaust gas purifying catalyst, and a catalyst system for exhaust gas purification. The exhaust gas purifying catalyst is characterized by containing an oxide A containing an oxide (A-1) containing an alkaline earth metal and/or a rare earth metal and an inorganic oxide (A-2), and a noble metal B supported by the oxide A. This exhaust gas purifying catalyst is also characterized in that the weight ratio of the oxide (A-1) containing an alkaline earth metal and/or a rare earth metal to the noble metal B is from 1:10 to 1:500.Type: GrantFiled: April 20, 2007Date of Patent: December 6, 2011Assignee: Cataler CorporationInventors: Norihiko Aono, Yoshinori Yamashita
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Patent number: 7781371Abstract: A filter catalyst of the present invention is comprised of a catalyst-supporting substrate 1, and catalytic portions 5, 6 for purifying an exhaust gas. The catalytic portions includes the first catalytic portion 5 for purifying HC, CO and NOx, and the second catalytic portion 6 for purifying the particulates. The first catalytic portion 5 is formed on a surface of at least a portion of the cellular wall 40, and the second catalytic portion 6 is formed on an inside surface of the pores. In the filter catalyst of the present invention purifying ability of the exhaust gas is increased, and the filter catalyst of the present invention can suppress rise of the pressure loss of the exhaust gas.Type: GrantFiled: November 7, 2005Date of Patent: August 24, 2010Assignee: Cataler CorporationInventors: Makoto Tsuji, Norihiko Aono, Daisuke Oki
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Publication number: 20090246098Abstract: An ability of oxidizing CO and HC is improved, while achieving a sufficient efficiency of burning PM. An exhaust gas-purifying catalyst includes a filter substrate (1) in which upstream and downstream cells (13a, 13b) separated by a porous wall (11) are formed, the upstream cell (13a) being open on an upstream side of the filter substrate (1) and closed on a downstream side of the filter substrate (1), and the downstream cell (13b) being closed on the upstream side and open on the downstream side, a precious metal supported by the filter substrate (1), and an alkaline metal and/or alkaline-earth metal supported by the filter substrate (1). A support amount of the alkaline metal and/or alkaline-earth metal per unit volume of the filter substrate (1) is greater in an upstream section (1a) of the filter substrate (1) than in a downstream section (1b) of the filter substrate (1).Type: ApplicationFiled: May 29, 2007Publication date: October 1, 2009Applicant: Cataler CorporationInventors: Takayuki Endo, Makoto Tsuji, Norihiko Aono
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Publication number: 20090196811Abstract: A NOx reduction catalyst is provided which reduces NOx in processing gas. The NOx reduction catalyst includes a catalyst substrate containing an oxide, a NOx absorption component, and a NOx purification component.Type: ApplicationFiled: May 17, 2007Publication date: August 6, 2009Applicant: CATALER CORPORATIONInventors: Yoshinori Yamashita, Norihiko Aono, Toshimi Murai
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Publication number: 20090099005Abstract: An exhaust gas purifying catalyst wherein the catalytic activity can be recovered over a wide temperature range is provided. Also provided are a method for recovering an exhaust gas purifying catalyst, and a catalyst system for exhaust gas purification. The exhaust gas purifying catalyst is characterized by containing an oxide A containing an oxide (A-1) containing an alkaline earth metal and/or a rare earth metal and an inorganic oxide (A-2), and a noble metal B supported by the oxide A. This exhaust gas purifying catalyst is also characterized in that the weight ratio of the oxide (A-1) containing an alkaline earth metal and/or a rare earth metal to the noble metal B is from 1:10 to 1:500.Type: ApplicationFiled: April 20, 2007Publication date: April 16, 2009Applicant: CATALER CORPORATIONInventors: Norihiko Aono, Yoshinori Yamashita
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Publication number: 20090023580Abstract: An object of the present invention is to provide a catalyst composition containing a perovskite-type composite oxide which exhibits a satisfactory catalytic performance over a long time even in a high temperature atmosphere and has a stable quality in which Rh and/or Pt dissolves to form a solid solution at a high rate. To achieve the object described above, in the present invention the catalyst composition is prepared to comprise an Rh-containing perovskite-type composite oxide represented by the following general formula (I) and/or a Pt-containing perovskite-type composite oxide represented by the following general formula (II) and a thermostable oxide optionally containing a noble metal.Type: ApplicationFiled: February 17, 2006Publication date: January 22, 2009Applicants: DAIHATSU MOTOR CO., LTD., CATALER CORPORATIONInventors: Hirohisa Tanaka, Kiyotomi Mitsumori, Isao Tan, Ichiro Takahashi, Mari Uenishi, Nobuhiko Kajita, Masashi Taniguchi, Kazuya Naito, Mareo Kimura, Keiichi Narita, Akimasa Hirai, Hiromasa Suzuki, Satoshi Matsueda, Hiroki Nagashima, Yoshinori Ishii, Norihiko Aono
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Publication number: 20060142153Abstract: The present invention has as its object the improvement of the efficiency of purification of the hydrocarbons, carbon monoxide, and nitrogen oxides, in particular, particulate matter PM, contained in the exhaust gas of diesel engines; further, the filter catalyst for exhaust gas purification of a diesel engine having a filter structure carrying a precious metal of, the present invention is comprised of a filter structure having-an upstream portion at the side where the exhaust gas flows in, a downstream portion at the side where the exhaust gas flows out, and a midstream portion positioned between the upstream portion and downstream portion, carrying the precious metal at the upstream portion at the side where the exhaust gas flows in at a high concentration, and carrying it at the downstream portion at a low concentration; and the method of production of the present invention has, in particular, a step of immersing the filter structure from the end face of the upstream portion to the downstream portion in aType: ApplicationFiled: December 23, 2005Publication date: June 29, 2006Inventors: Takayuki Endo, Norihiko Aono
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Publication number: 20060100101Abstract: A filter catalyst of the present invention is comprised of a catalyst-supporting substrate 1, and catalytic portions 5, 6 for purifying an exhaust gas. The catalytic portions includes the first catalytic portion 5 for purifying SC, CO and NOx, and the second catalytic portion 6 for purifying the particulates. The first catalytic portion 5 is formed on a surface of at least a portion of the cellular wall 40, and the second catalytic portion 6 is formed on an inside surface of the pores. In the filter catalyst of the present invention purifying ability of the exhaust gas is increased, and the filter catalyst of the present invention can suppress rise of the pressure loss of the exhaust gas.Type: ApplicationFiled: November 7, 2005Publication date: May 11, 2006Applicant: CATALER CORPORATIONInventors: Makoto Tsuji, Norihiko Aono, Daisuke Oki
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Patent number: 6911414Abstract: A catalyst for purifying an exhaust gas includes zirconia particles, and a transition metal layer, covering at least a part of a surface of the zirconia particles in a lamellar manner. It can reduce the emission of particulate materials (i.e., P.M.), such as SOF and sulfates, because the contacting area enlarges between the transition metal layer and materials to be purified.Type: GrantFiled: November 15, 2001Date of Patent: June 28, 2005Assignee: Cataler CorporationInventors: Mareo Kimura, Yoriko Hasegawa, Norihiko Aono, Seiji Tanaka
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Publication number: 20020098975Abstract: A catalyst for purifying an exhaust gas includes zirconia particles, and a transition metal layer, covering at least a part of a surface of the zirconia particles in a lamellar manner. It can reduce the emission of particulate materials (i.e., P.M.), such as SOF and sulfates, because the contacting area enlarges between the transition metal layer and materials to be purified.Type: ApplicationFiled: November 15, 2001Publication date: July 25, 2002Applicant: CATALER CORPORATIONInventors: Mareo Kimura, Yoriko Hasegawa, Norihiko Aono, Seiji Tanaka
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Patent number: 5686377Abstract: A catalyst for purifying exhaust gases comprises a catalyst carrier made of potassium titanate and a noble metal loaded on the catalyst carrier. The catalyst carrier is substantially free from alumina. This catalyst can oxidize at least hydrocarbons in exhaust gases at a high catalytic activity even at low temperatures, and at the same time can suppress SO.sub.2 from converting into sulfates. This catalyst does not employ substance like alumina exhibiting solid acidity as a catalyst carrier. Further, this catalyst can be used for purifying exhaust gases from diesel engines to suppress particulates and sulfates from being emitted, and to improve conversions of hydrocarbons and carbon monoxide.Type: GrantFiled: January 16, 1996Date of Patent: November 11, 1997Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Toyota Jidosha Kabushiki Kaisha, Cataler Industrial Co., Ltd.Inventors: Kouji Banno, Masahiro Sugiura, Yoko Kumai, Haruo Doi, Tetsuo Nagami, Norihiko Aono, Koichi Kasahara, Shigeji Matsumoto