Patents by Inventor Michitaka Yamaguchi

Michitaka Yamaguchi 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: 10434502
    Abstract: The present invention provides an exhaust gas purifying composition containing BEA zeolite containing phosphorus, wherein an amount of phosphorus is such that a molar ratio thereof with respect to Al in the zeolite is 0.5 or greater, and a maintaining factor RS of a specific surface area of the exhaust gas purifying composition after heating at 980° C. for 25 hours is 35% or greater. Furthermore, the present invention also provides an exhaust gas purifying composition containing phosphorus-containing zeolite, wherein an amount of phosphorus is such that a molar ratio thereof with respect to Al in the zeolite is from 0.5 to 8, and a maintaining factor Rd of a crystallite diameter after heating at 980° C. for 25 hours is 50% or greater. The exhaust gas purifying composition of the present invention has excellent HC purifiability for exhaust gas purification in internal combustion engines such as gasoline engines.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: October 8, 2019
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Jo Nishikawa, Satoshi Watanabe, Michitaka Yamaguchi
  • Publication number: 20190262815
    Abstract: The present invention provides an exhaust gas purifying composition containing BEA zeolite containing phosphorus, wherein an amount of phosphorus is such that a molar ratio thereof with respect to Al in the zeolite is 0.5 or greater, and a maintaining factor RS of a specific surface area of the exhaust gas purifying composition after heating at 980° C. for 25 hours is 35% or greater. Furthermore, the present invention also provides an exhaust gas purifying composition containing phosphorus-containing zeolite, wherein an amount of phosphorus is such that a molar ratio thereof with respect to Al in the zeolite is from 0.5 to 8, and a maintaining factor Rd of a crystallite diameter after heating at 980° C. for 25 hours is 50% or greater. The exhaust gas purifying composition of the present invention has excellent HC purifiability for exhaust gas purification in internal combustion engines such as gasoline engines.
    Type: Application
    Filed: July 26, 2017
    Publication date: August 29, 2019
    Inventors: Jo NISHIKAWA, Satoshi WATANABE, Michitaka YAMAGUCHI
  • Patent number: 10350581
    Abstract: The invention relates to a catalyst composition using other metals different from precious metals as a catalytically active component and is to propose a novel catalyst composition for exhaust gas purification which has excellent catalytic activity, in particular, excellent treatment activity of HC even after a thermal durability treatment. The invention is to propose a catalyst composition for exhaust gas purification comprising catalyst particles having a constitution in which Cu and a transition metal A including at least one of Cr, Fe, Mn, Co, Ni, Zr, and Ag are supported on ceria (CeO2) particles and a catalyst using the same.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: July 16, 2019
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Yuki Nagao, Michitaka Yamaguchi, Yunosuke Nakahara, Masato Machida
  • Publication number: 20190174681
    Abstract: A grafting apparatus includes plate-shaped grafting members each provided with, on a main surface on one side in a thickness direction thereof, at least one plant holder to hold a plant for grafting. The grafting apparatus includes a cutter and a joiner. The cutter is configured to cut a stem of the plant for grafting that is held by the at least one plant holder of each of the grafting members. The joiner is configured to mutually join at least parts of the grafting members, while the at least one plant holder holds a part of the plant for grafting that has been cut by the cutter, to thereby mutually join parts of the plants for grafting.
    Type: Application
    Filed: August 10, 2017
    Publication date: June 13, 2019
    Inventors: Michitaka Notaguchi, Kenji Tachibana, Ryusei Yamaguchi
  • Publication number: 20190083965
    Abstract: An exhaust gas purifying composition of the present invention contains zeolite that is BEA zeolite having an SiO2/Al2O3 molar ratio of greater than 25 and 600 or less and containing phosphorus. Furthermore, the exhaust gas purifying composition preferably contains zirconium in addition to phosphorus. Furthermore, the zeolite has an SiO2/Al2O3 molar ratio of from 30 to 150. The present invention provides an exhaust gas purifying composition having excellent HC adsorbability for exhaust gas purification in internal combustion engines such as gasoline engines.
    Type: Application
    Filed: July 26, 2017
    Publication date: March 21, 2019
    Inventors: Jo NISHIKAWA, Satoshi WATANABE, Michitaka YAMAGUCHI
  • Patent number: 9970342
    Abstract: An exhaust gas purification device is equipped with: an NOx purification unit disposed in exhaust gas piping of an engine supporting an NOx storage catalyst (NSC); a catalyzed soot filter (CSF) disposed downstream of the NOx purification unit supporting a particulate combustion catalyst causing captured particulates to combust; and an electronic control unit (ECU) which controls exhaust gas flowing into the NSC to be rich and which, by raising the temperature of the NSC, acts as a regeneration device that causes sulfur components captured in the NSC to be desorbed. The particulate combustion catalyst is provided where Ag and Pd have been alloyed on an Al2O3 carrier; the quantity of Ag supported by the Al2O3 carrier is 1.2-2.5 g/L; the quantity of Pd supported by the Al2O3 carrier is 0.7 g/L or less; and the ratio Ag/Pd of the Ag support quantity to the Pd support quantity is 1.7-8.3.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: May 15, 2018
    Assignees: HONDA MOTOR CO., LTD., MITSUI MINING & SMELTING CO., LTD.
    Inventors: Ryosaku Takahara, Koichi Inaba, Nobuhiro Komatsu, Masafumi Sakota, Takahiro Kogawa, Michitaka Yamaguchi
  • Publication number: 20180023436
    Abstract: An exhaust gas purification device is equipped with: an NOx purification unit disposed in exhaust gas piping of an engine supporting an NOx storage catalyst (NSC); a catalyzed soot filter (CSF) disposed downstream of the NOx purification unit supporting a particulate combustion catalyst causing captured particulates to combust; and an electronic control unit (ECU) which controls exhaust gas flowing into the NSC to be rich and which, by raising the temperature of the NSC, acts as a regeneration device that causes sulfur components captured in the NSC to be desorbed. The particulate combustion catalyst is provided where Ag and Pd have been alloyed on an Al2O3 carrier; the quantity of Ag supported by the Al2O3 carrier is 1.2-2.5 g/L; the quantity of Pd supported by the Al2O3 carrier is 0.7 g/L or less; and the ratio Ag/Pd of the Ag support quantity to the Pd support quantity is 1.7-8.3.
    Type: Application
    Filed: January 29, 2016
    Publication date: January 25, 2018
    Applicants: HONDA MOTOR CO., LTD., MITSUI MINING & SMELTING CO., LTD.
    Inventors: Ryosaku Takahara, Koichi Inaba, Nobuhiro Komatsu, Masafumi Sakota, Takahiro Kogawa, Michitaka Yamaguchi
  • Publication number: 20150352530
    Abstract: The invention relates to a catalyst composition using other metals different from precious metals as a catalytically active component and is to propose a novel catalyst composition for exhaust gas purification which has excellent catalytic activity, in particular, excellent treatment activity of HC even after a thermal durability treatment. The invention is to propose a catalyst composition for exhaust gas purification comprising catalyst particles having a constitution in which Cu and a transition metal A including at least one of Cr, Fe, Mn, Co, Ni, Zr, and Ag are supported on ceria (CeO2) particles and a catalyst using the same.
    Type: Application
    Filed: November 27, 2013
    Publication date: December 10, 2015
    Inventors: Yuki NAGAO, Michitaka YAMAGUCHI, Yunosuke NAKAHARA, Masato MACHIDA
  • Patent number: 9180440
    Abstract: A catalyst for exhaust gas purification having superior exhaust gas purification performance is provided. Disclosed is a catalyst containing, as a catalyst support, a composite phosphate containing yttrium and phosphorus and having a composition ratio of yttrium to phosphorus (Y/P) of greater than 1 as a molar ratio.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: November 10, 2015
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Michitaka Yamaguchi, Akiko Sugioka, Takahito Asanuma, Yunosuke Nakahara, Takahiro Sato
  • Publication number: 20140213439
    Abstract: A catalyst for exhaust gas purification having superior exhaust gas purification performance is provided. Disclosed is a catalyst containing, as a catalyst support, a composite phosphate containing yttrium and phosphorus and having a composition ratio of yttrium to phosphorus (Y/P) of greater than 1 as a molar ratio.
    Type: Application
    Filed: April 24, 2012
    Publication date: July 31, 2014
    Applicant: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Michitaka Yamaguchi, Akiko Sugioka, Takahito Asanuma, Yunosuke Nakahara, Takahiro Sato