Patents by Inventor Daisuke Ochiai
Daisuke Ochiai 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: 10801382Abstract: An exhaust gas-purifying catalyst of the present invention comprising a substrate, a first catalyst layer comprising a first supported catalyst, a second supported catalyst, palladium, and a first nitrogen oxide storage material, and a second catalyst layer comprising a third supported catalyst having an alloying rate of platinum and palladium of 40% or more and a second nitrogen oxide storage material, wherein a mass of the second supported catalyst is greater than a mass of the first supported catalyst and greater than a mass of the third supported catalyst.Type: GrantFiled: October 24, 2019Date of Patent: October 13, 2020Assignee: Cataler CorporationInventors: Daisuke Ochiai, Yoshinori Yamashita, Masatoshi Ikebe
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Patent number: 10704441Abstract: An exhaust gas-purifying catalyst of the present invention comprising a substrate, a first catalyst layer comprising a first supported catalyst, a second supported catalyst, palladium, and a first nitrogen oxide storage material, and a second catalyst layer comprising a third supported catalyst having an alloying rate of platinum and palladium of 40% or more and a second nitrogen oxide storage material, wherein a mass of the second supported catalyst is greater than a mass of the first supported catalyst and greater than a mass of the third supported catalyst.Type: GrantFiled: October 24, 2019Date of Patent: July 7, 2020Assignee: Cataler CorporationInventors: Yoshinori Yamashita, Shohei Tomita, Daisuke Ochiai, Masatoshi Ikebe
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Publication number: 20200056523Abstract: An exhaust gas-purifying catalyst of the present invention comprising a substrate, a first catalyst layer comprising a first supported catalyst, a second supported catalyst, palladium, and a first nitrogen oxide storage material, and a second catalyst layer comprising a third supported catalyst having an alloying rate of platinum and palladium of 40% or more and a second nitrogen oxide storage material, wherein a mass of the second supported catalyst is greater than a mass of the first supported catalyst and greater than a mass of the third supported catalyst.Type: ApplicationFiled: October 24, 2019Publication date: February 20, 2020Applicant: CATALER CORPORATIONInventors: Yoshinori Yamashita, Shohei Tomita, Daisuke Ochiai, Masatoshi Ikebe
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Publication number: 20200056524Abstract: An exhaust gas-purifying catalyst of the present invention comprising a substrate, a first catalyst layer comprising a first supported catalyst, a second supported catalyst, palladium, and a first nitrogen oxide storage material, and a second catalyst layer comprising a third supported catalyst having an alloying rate of platinum and palladium of 40% or more and a second nitrogen oxide storage material, wherein a mass of the second supported catalyst is greater than a mass of the first supported catalyst and greater than a mass of the third supported catalyst.Type: ApplicationFiled: October 24, 2019Publication date: February 20, 2020Applicant: CATALER CORPORATIONInventors: Daisuke Ochiai, Yoshinori Yamashita, Masatoshi Ikebe
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Patent number: 10556223Abstract: The object of the present invention is to provide an exhaust gas purifying catalyst that can achieve high purification performance while suppressing H2S emissions. The object is solved by an exhaust gas purifying catalyst in which the top layer of a catalyst coating layer comprises a ceria-zirconia composite oxide having a pyrochlore-type ordered array structure, in which the ceria-zirconia composite oxide contains at least one additional element selected from the group consisting of praseodymium, lanthanum, and yttrium at 0.5 to 5.0 mol % in relation to the total cation amount, and the molar ratio of (cerium+additional element):(zirconium) is within the range from 43:57 to 48:52.Type: GrantFiled: December 11, 2015Date of Patent: February 11, 2020Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, CATALER CORPORATIONInventors: Hiromasa Suzuki, Takeru Yoshida, Masahide Miura, Yuki Aoki, Isao Chinzei, Yoshinori Saito, Daisuke Ochiai, Mitsuyoshi Okada, Toshitaka Tanabe, Akihiko Suda, Masanao Sato, Akiya Chiba, Akira Morikawa, Hirotaka Ori
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Patent number: 10344655Abstract: An exhaust gas purification catalyst having an excellent exhaust partition ability while reducing the increase in pressure loss. Exhaust gas purification catalyst includes a substrate having a wall-flow structure with partition wall, upstream coating section formed in portions of partition wall facing entrance cell, from exhaust inlet-side end in the extending direction of partition wall, and downstream coating section formed in portions of partition wall facing exit cell, from exhaust outlet-side end in the extending direction, having a length shorter than the entire length Lw of the partition wall. In downstream coating section, a catalytic metal is concentrated in the surface layer in contact with exit cell.Type: GrantFiled: October 7, 2015Date of Patent: July 9, 2019Assignees: CATALER CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ryota Onoe, Shingo Sakagami, Tsuyoshi Ito, Yuta Morishita, Masahiko Takeuchi, Naoto Miyoshi, Akemi Sato, Daisuke Ochiai
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Patent number: 10322406Abstract: The object of the present invention is to provide an exhaust gas purifying catalyst that can achieve high purification performance while suppressing H2S emissions. The object is solved by an exhaust gas purifying catalyst in which the top layer of a catalyst coating layer comprises a ceria-zirconia composite oxide having a pyrochlore-type ordered array structure, in which the ceria-zirconia composite oxide contains at least one additional element selected from the group consisting of praseodymium, lanthanum, and yttrium at 0.5 to 5.0 mol % in relation to the total cation amount, and the molar ratio of (cerium+additional element):(zirconium) is within the range from 43:57 to 48:52.Type: GrantFiled: December 11, 2015Date of Patent: June 18, 2019Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, CATALER CORPORATIONInventors: Hiromasa Suzuki, Takeru Yoshida, Masahide Miura, Yuki Aoki, Isao Chinzei, Yoshinori Saito, Daisuke Ochiai, Mitsuyoshi Okada, Toshitaka Tanabe, Akihiko Suda, Masanao Sato, Akiya Chiba, Akira Morikawa, Hirotaka Ori
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Patent number: 10159934Abstract: Provided is an exhaust gas purification catalyst that combines reduction of pressure loss and enhancement of purification performance. This invention provides an exhaust gas purification catalyst comprising a wall-flow-type substrate and first and second catalytic layers. The first catalytic layer is provided to the interior of a partition wall, in contact with an entrance cell, from an exhaust inlet-side end in the running direction, having a length L1 less than Lw. The second catalytic layer is provided to the interior of a partition wall, in contact with an exit cell, from an exhaust outlet-side end in the running direction, having a length L2 less than Lw. An internal portion of partition wall in contact with entrance cell has a substrate-exposing segment near the exhaust outlet-side end.Type: GrantFiled: February 16, 2016Date of Patent: December 25, 2018Assignees: CATALER CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ichiro Kitamura, Keiichi Narita, Yasutaka Nomura, Ryota Onoe, Yuta Morishita, Junji Kuriyama, Hiroshi Sekine, Akihito Inoue, Daisuke Ochiai, Jun Sawada, Naoto Miyoshi, Masahiko Takeuchi, Akemi Sato, Atsushi Tanaka
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Patent number: 10076725Abstract: A wall-flow-type exhaust gas purification catalyst with an oxygen storage material that has an increased OSC and exhibits its OSC without a compromise provides an exhaust gas purification catalyst having a wall-flow-type substrate, a first catalytic layer and a second catalytic layer. The first catalytic layer is provided to an internal portion of a partition wall in contact with an entrance cell. The second catalytic layer is provided to an internal portion of a partition wall in contact with an exit cell. Each of the first and second catalytic layers has an oxygen storage material. The ratio (D1/D2) of the coating density D1 of the first catalytic layer to the coating density D2 of the second catalytic layer is 1.1 to 1.8.Type: GrantFiled: February 16, 2016Date of Patent: September 18, 2018Assignees: CATALER CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ryota Onoe, Shingo Sakagami, Yasutaka Nomura, Yuta Morishita, Junji Kuriyama, Hiroshi Sekine, Daisuke Ochiai, Naoto Miyoshi, Masahiko Takeuchi, Akemi Sato
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Publication number: 20180028972Abstract: Provided is an exhaust gas purification catalyst that combines reduction of pressure loss and enhancement of purification performance. This invention provides an exhaust gas purification catalyst comprising a wall-flow-type substrate and first and second catalytic layers. The first catalytic layer is provided to the interior of a partition wall, in contact with an entrance cell, from an exhaust inlet-side end in the running direction, having a length L1 less than Lw. The second catalytic layer is provided to the interior of a partition wall, in contact with an exit cell, from an exhaust outlet-side end in the running direction, having a length L2 less than Lw. An internal portion of partition wall in contact with entrance cell has a substrate-exposing segment near the exhaust outlet-side end.Type: ApplicationFiled: February 16, 2016Publication date: February 1, 2018Applicants: CATALER CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ichiro KITAMURA, Keiichi NARITA, Yasutaka NOMURA, Ryota ONOE, Yuta MORISHITA, Junji KURIYAMA, Hiroshi SEKINE, Akihito INOUE, Daisuke OCHIAI, Jun SAWADA, Naoto MIYOSHI, Masahiko TAKEUCHI, Akemi SATO, Atsushi TANAKA
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Publication number: 20180021726Abstract: A wall-flow-type exhaust gas purification catalyst with an oxygen storage material that has an increased OSC and exhibits its OSC without a compromise provides an exhaust gas purification catalyst having a wall-flow-type substrate, a first catalytic layer and a second catalytic layer. The first catalytic layer is provided to an internal portion of a partition wall in contact with an entrance cell. The second catalytic layer is provided to an internal portion of a partition wall in contact with an exit cell. Each of the first and second catalytic layers has an oxygen storage material. The ratio (D1/D2) of the coating density D1 of the first catalytic layer to the coating density D2 of the second catalytic layer is 1.1 to 1.8.Type: ApplicationFiled: February 16, 2016Publication date: January 25, 2018Applicants: CATALER CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ryota ONOE, Shingo SAKAGAMI, Yasutaka NOMURA, Yuta MORISHITA, Junji KURIYAMA, Hiroshi SEKINE, Daisuke OCHIAI, Naoto MIYOSHI, Masahiko TAKEUCHI, Akemi SATO
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Publication number: 20170348674Abstract: The object of the present invention is to provide an exhaust gas purifying catalyst that can achieve high purification performance while suppressing H2S emissions. The object is solved by an exhaust gas purifying catalyst in which the top layer of a catalyst coating layer comprises a ceria-zirconia composite oxide having a pyrochlore-type ordered array structure, in which the ceria-zirconia composite oxide contains at least one additional element selected from the group consisting of praseodymium, lanthanum, and yttrium at 0.5 to 5.0 mol % in relation to the total cation amount, and the molar ratio of (cerium+additional element):(zirconium) is within the range from 43:57 to 48:52.Type: ApplicationFiled: December 11, 2015Publication date: December 7, 2017Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, CATALER CORPORATIONInventors: Hiromasa SUZUKI, Takeru YOSHIDA, Masahide MIURA, Yuki AOKI, Isao CHINZEI, Yoshinori SAITO, Daisuke OCHIAI, Mitsuyoshi OKADA, Toshitaka TANABE, Akihiko SUDA, Masanao SATO, Akiya CHIBA, Akira MORIKAWA, Hirotaka ORI
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Publication number: 20170298797Abstract: An exhaust gas purification catalyst having an excellent exhaust partition ability while reducing the increase in pressure loss. Exhaust gas purification catalyst includes a substrate having a wall-flow structure with partition wall, upstream coating section formed in portions of partition wall facing entrance cell, from exhaust inlet-side end in the extending direction of partition wall, and downstream coating section formed in portions of partition wall facing exit cell, from exhaust outlet-side end in the extending direction, having a length shorter than the entire length Lw of the partition wall. In downstream coating section, a catalytic metal is concentrated in the surface layer in contact with exit cell.Type: ApplicationFiled: October 7, 2015Publication date: October 19, 2017Applicants: CATALER CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ryota ONOE, Shingo SAKAGAMI, Tsuyoshi ITO, Yuta MORISHITA, Masahiko TAKEUCHI, Naoto MIYOSHI, Akemi SATO, Daisuke OCHIAI
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Patent number: 9522385Abstract: The object of the present invention is to provide a novel exhaust gas purifying catalyst having excellent NOx purification performance. The object can be achieved by an exhaust gas purifying catalyst comprising: a substrate; and a catalyst layer disposed on the substrate which comprises a first carrier, and platinum and a first palladium supported on the first carrier; in which the weight ratio of the platinum to the first palladium is 3:1 to 8:1.Type: GrantFiled: April 15, 2014Date of Patent: December 20, 2016Assignees: Cataler Corporation, Toyota Jidosha Kabushiki KaishaInventors: Yasuyoshi Sasaki, Makoto Tsuji, Hiroto Imai, Keisuke Kishita, Daisuke Ochiai
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Publication number: 20160074836Abstract: The object of the present invention is to provide a novel exhaust gas purifying catalyst having excellent NOx purification performance. The object can be achieved by an exhaust gas purifying catalyst comprising: a substrate; and a catalyst layer disposed on the substrate which comprises a first carrier, and platinum and a first palladium supported on the first carrier; in which the weight ratio of the platinum to the first palladium is 3:1 to 8:1.Type: ApplicationFiled: April 15, 2014Publication date: March 17, 2016Applicants: CATALER CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasuyoshi SASAKI, Makoto TSUJI, Hiroto IMAI, Keisuke KISHITA, Daisuke OCHIAI
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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: 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