Patents by Inventor Ichiro Kitamura

Ichiro Kitamura 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).

  • Patent number: 10159934
    Abstract: 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: Grant
    Filed: February 16, 2016
    Date of Patent: December 25, 2018
    Assignees: CATALER CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: 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
  • Publication number: 20180028972
    Abstract: 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: Application
    Filed: February 16, 2016
    Publication date: February 1, 2018
    Applicants: CATALER CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: 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
  • Patent number: 9683470
    Abstract: An exhaust gas control apparatus for an internal combustion engine, controls an exhaust operation of the internal combustion engine (200) provided with an exhaust gas purification catalyst (216) in an exhaust passage (215). The exhaust gas control apparatus for the internal combustion engine is provided with; a warming-up device configured to warm up the exhaust gas purification catalyst; and an oxygen supplying device (220, 221) configured to supply oxygen to the exhaust gas purification catalyst after the end of the warm-up. This makes it possible to preferably desorb sulfur adsorbed to the exhaust gas purification catalyst during warm-up. It is therefore possible to suppress a reduction in purification ability of the exhaust gas purification catalyst due to sulfur coating.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: June 20, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takahiko Fujiwara, Norihisa Nakagawa, Kouichi Kimura, Shuntaro Okazaki, Keisuke Nagasaka, Ichiro Kitamura, Satoshi Kamitani, Koji Morita
  • Publication number: 20150128572
    Abstract: An exhaust gas control apparatus for an internal combustion engine, controls an exhaust operation of the internal combustion engine (200) provided with an exhaust gas purification catalyst (216) in an exhaust passage (215). The exhaust gas control apparatus for the internal combustion engine is provided with a warming-up device configured to warm up the exhaust gas purification catalyst; and an oxygen supplying device (220, 221) configured to supply oxygen to the exhaust gas purification catalyst after the end of the warm-up. This makes it possible to preferably desorb sulfur adsorbed to the exhaust gas purification catalyst during warm-up. It is therefore possible to suppress a reduction in purification ability of the exhaust gas purification catalyst due to sulfur coating.
    Type: Application
    Filed: December 27, 2011
    Publication date: May 14, 2015
    Inventors: Takahiro Fujiwara, Norihisa Nakagawa, Kouichi Kimura, Shuntaro Okazaki, Keisuke Nagasaka, Ichiro Kitamura, Satoshi Kamitani, Koji Morita
  • Patent number: 8680004
    Abstract: Provided is an exhaust gas-purifying catalyst excelling in an exhaust gas-purifying performance. The exhaust gas-purifying catalyst contains a substrate, and a catalyst layer formed on the substrate and containing a precious metal and praseodymium.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: March 25, 2014
    Assignee: Cataler Corporation
    Inventors: Ichiro Kitamura, Akimasa Hirai, Kenichi Taki
  • Patent number: 8309488
    Abstract: An exhaust gas purifying catalyst includes a catalyst substrate and a catalyst coating layer containing a noble metal and a refractory inorganic oxide. The catalyst coating layer includes an upstream portion located upstream and a downstream portion located downstream in a flow direction of an exhaust gas. The upstream portion has a layered structure including an upstream portion inside layer containing a cerium-zirconium composite oxide in which a relative proportion of CeO2 is 50 to 95 wt %, as the refractory inorganic oxide and an upstream portion outside layer containing a cerium-zirconium composite oxide in which a relative proportion of ZrO2 is 50 to 95 wt %, as the refractory inorganic oxide. The upstream portion outside layer and the downstream portion contain Rh as the noble metal, and an amount of Rh contained in the upstream portion outside layer is larger than an amount of Rh contained in the downstream portion.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: November 13, 2012
    Assignee: Cataler Corporation
    Inventors: Ichiro Kitamura, Kenichi Taki, Akimasa Hirai
  • Patent number: 8168560
    Abstract: An exhaust gas purifying catalyst is provided which includes a catalyst substrate and a catalyst coating layer. The catalyst coating layer is formed on the catalyst substrate and contains a noble metal and a refractory inorganic oxide. The catalyst coating layer has a layered structure including an A-layer and a B-layer. The A-layer contains Pd and Pt as the noble metal in a weight ratio of 3:1 to 20:1. The B-layer includes Rh as the noble metal.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: May 1, 2012
    Assignee: Cataler Corporation
    Inventors: Kenichi Taki, Akimasa Hirai, Ichiro Kitamura
  • Patent number: 8039418
    Abstract: A high exhaust gas-purifying performance is achieved. An exhaust gas-purifying catalyst includes a substrate, a lower layer covering the substrate and including an oxygen storage material and palladium, and an upper layer covering the lower layer and including rhodium and a carrier supporting it. The lower layer is rhodium-free. The upper layer has an oxygen storage capacity lower than that of the lower layer.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: October 18, 2011
    Assignee: Cataler Corporation
    Inventors: Ichiro Kitamura, Akimasa Hirai, Kenichi Taki
  • Patent number: 7998896
    Abstract: An exhaust gas purifying catalyst having a good ignition performance is provided. The exhaust gas purifying catalyst 1 includes a catalyst substrate 3 and a catalyst coating layer 5 which contains a noble metal and a refractory inorganic oxide and is formed on the catalyst substrate. The exhaust gas purifying catalyst is characterized in that the catalyst coating layer 5 includes an upstream portion 11 located upstream and a downstream portion 13 located downstream in a flow direction of an exhaust gas. The upstream portion 11 has a layered structure including an upstream portion inside layer 17 and an upstream portion outside layer 15. The upstream portion inside layer contains a cerium-zirconium composite oxide in which a relative proportion of CeO2 is 50 to 95 wt %, as the refractory inorganic oxide, and the upstream portion outside layer 15 and the downstream portion 13 contain a cerium-zirconium composite oxide in which a relative proportion of ZrO2 is 50 to 95 wt %, as the refractory inorganic oxide.
    Type: Grant
    Filed: July 24, 2006
    Date of Patent: August 16, 2011
    Assignee: Cataler Corporation
    Inventors: Ichiro Kitamura, Kenichi Taki, Akimasa Hirai
  • Publication number: 20110111949
    Abstract: Provided is an exhaust gas-purifying catalyst excelling in an exhaust gas-purifying performance. The exhaust gas-purifying catalyst contains a substrate, and a catalyst layer formed on the substrate and containing a precious metal and praseodymium.
    Type: Application
    Filed: January 13, 2011
    Publication date: May 12, 2011
    Applicant: CATALER CORPORATION
    Inventors: Ichiro KITAMURA, Akimasa HIRAI, Kenichi TAKI
  • Publication number: 20100150792
    Abstract: An exhaust gas purifying catalyst having a good ignition performance is provided. The exhaust gas purifying catalyst 1 includes a catalyst substrate 3 and a catalyst coating layer 5 which contains a noble metal and a refractory inorganic oxide and is formed on the catalyst substrate. The exhaust gas purifying catalyst is characterized in that the catalyst coating layer 5 includes an upstream portion 11 located upstream and a downstream portion 13 located downstream in a flow direction of an exhaust gas. The upstream portion 11 has a layered structure including an upstream portion inside layer 17 and an upstream portion outside layer 15. The upstream portion inside layer contains a cerium-zirconium composite oxide in which a relative proportion of CeO2 is 50 to 95 wt %, as the refractory inorganic oxide, and the upstream portion outside layer 15 and the downstream portion 13 contain a cerium-zirconium composite oxide in which a relative proportion of ZrO2 is 50 to 95 wt %, as the refractory inorganic oxide.
    Type: Application
    Filed: July 24, 2006
    Publication date: June 17, 2010
    Applicant: CATALER CORPORATION
    Inventors: Ichiro Kitamura, Kenichi Taki, Akimasa Hirai
  • Patent number: 7737077
    Abstract: This is to provide a catalyst for purifying exhaust gases, catalyst which are good in terms of the purifying performance.
    Type: Grant
    Filed: November 25, 2004
    Date of Patent: June 15, 2010
    Assignee: Cataler Corporation
    Inventors: Ichiro Kitamura, Akimasa Hirai, Kenichi Taki
  • Publication number: 20100087314
    Abstract: A high exhaust gas-purifying performance is achieved. An exhaust gas-purifying catalyst includes a substrate, a lower layer covering the substrate and including an oxygen storage material and palladium, and an upper layer covering the lower layer and including rhodium and a carrier supporting it. The lower layer is rhodium-free. The upper layer has an oxygen storage capacity lower than that of the lower layer.
    Type: Application
    Filed: December 11, 2009
    Publication date: April 8, 2010
    Applicant: CATALER CORPORATION
    Inventors: Ichiro KITAMURA, Akimasa Hirai, Kenichi Taki
  • Publication number: 20090275468
    Abstract: An exhaust gas purifying catalyst is provided which includes a catalyst substrate and a catalyst coating layer. The catalyst coating layer is formed on the catalyst substrate and contains a noble metal and a refractory inorganic oxide. The catalyst coating layer has a layered structure including an A-layer and a B-layer. The A-layer contains Pd and Pt as the noble metal in a weight ratio of 3:1 to 20:1. The B-layer includes Rh as the noble metal.
    Type: Application
    Filed: October 4, 2006
    Publication date: November 5, 2009
    Applicant: CATALER CORPORATION
    Inventors: Kenichi Taki, Akimasa Hirai, Ichiro Kitamura
  • Publication number: 20090209408
    Abstract: A high exhaust gas-purifying efficiency is achieved. An exhaust gas-purifying catalyst includes a substrate, an oxygen storage layer covering the substrate and including an oxygen storage material, and a catalytic layer covering the oxygen storage layer and including palladium, rhodium and a carrier supporting them, the catalytic layer having a precious metal concentration higher than that of the oxygen storage layer.
    Type: Application
    Filed: April 17, 2009
    Publication date: August 20, 2009
    Applicant: CATALER CORPORATION
    Inventors: Ichiro KITAMURA, Akimasa Hirai, Kenichi Taki
  • Publication number: 20090124492
    Abstract: An exhaust gas purifying catalyst includes a catalyst substrate and a catalyst coating layer containing a noble metal and a refractory inorganic oxide. The catalyst coating layer includes an upstream portion located upstream and a downstream portion located downstream in a flow direction of an exhaust gas. The upstream portion has a layered structure including an upstream portion inside layer containing a cerium-zirconium composite oxide in which a relative proportion of CeO2 is 50 to 95 wt %, as the refractory inorganic oxide and an upstream portion outside layer containing a cerium-zirconium composite oxide in which a relative proportion of ZrO2 is 50 to 95 wt %, as the refractory inorganic oxide. The upstream portion outside layer and the downstream portion contain Rh as the noble metal, and an amount of Rh contained in the upstream portion outside layer is larger than an amount of Rh contained in the downstream portion.
    Type: Application
    Filed: July 18, 2006
    Publication date: May 14, 2009
    Applicant: CATALER CORPORATION
    Inventors: Ichiro Kitamura, Kenichi Taki, Akimasa Hirai
  • Publication number: 20080081762
    Abstract: This is to provide a catalyst for purifying exhaust gases, catalyst which are good in terms of the purifying performance.
    Type: Application
    Filed: November 25, 2004
    Publication date: April 3, 2008
    Inventors: Ichiro Kitamura, Akimasa Hirai, Kenichi Taki