Patents by Inventor Rui Imoto

Rui Imoto 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).

  • Publication number: 20220320528
    Abstract: Mesoporous carbon has a connecting structure in which primary particles made of carbon particles having primary pores with a primary pore diameter of less than 20 nm are connected. In the mesoporous carbon, the pore capacity of secondary pores with secondary pore diameters within a range of 20 nm to 100 nm, which is measured by a mercury intrusion method, is 0.42 cm3/g or more and 1.34 cm3/g or less. In addition, the mesoporous carbon has a linearity of 2.2 or more and 2.6 or less. An electrode catalyst for a fuel cell includes the mesoporous carbon and catalyst particles supported in the primary pores in the mesoporous carbon. Furthermore, a catalyst layer includes the electrode catalyst for the fuel cell and a catalyst layer ionomer.
    Type: Application
    Filed: March 28, 2022
    Publication date: October 6, 2022
    Inventors: Naoki HASEGAWA, Kazuhisa YANO, Tomohiro TAKESHITA, Rui IMOTO, Kumiko NOMURA, Noriyuki KITAO, Yunan WANG, Yuuki KASAMA
  • Publication number: 20220119260
    Abstract: Porous carbon is produced by a method in which a carbon source and a pore-forming agent are added to spherical silica serving as a template, the carbon source is then polymerized and carbonized, and finally the spherical silica serving as a template is removed.
    Type: Application
    Filed: September 13, 2021
    Publication date: April 21, 2022
    Inventors: Yunan WANG, Rui IMOTO, Tomohiro OHNISHI, Toshiyuki YOKOI
  • Publication number: 20210163292
    Abstract: Mesoporous carbon has a beaded structure in which primary particles with mesopores are linked. In the mesoporous carbon, an average primary particle size is 7 nm or more and 300 nm or less, a pore diameter is 2 nm or more and 10 nm or less, an average thickness of pore walls is 3 nm or more and 15 nm or less, a pore volume is 0.2 mL/g or more and 3.0 mL/g or less, and a tap density is 0.03 g/cm3 or more and 0.3 g/cm3 or less. In a polymer electrolyte fuel cell, the mesoporous carbon is used as a catalyst carrier for at least an air electrode catalyst layer. The mesoporous carbon can be obtained by impregnating mesoporous silica satisfying a predetermined condition with a carbon source, performing polymerization and carbonization, and removing a template.
    Type: Application
    Filed: November 25, 2020
    Publication date: June 3, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoki HASEGAWA, Kazuhisa YANO, Tomohiro TAKESHITA, Rui IMOTO, Kumiko NOMURA
  • Publication number: 20200251748
    Abstract: The present invention provides a fuel cell catalyst that can demonstrate high activity during low loads and high loads. A fuel cell catalyst comprising a carbon support having fine pores, and a catalyst metal supported by the carbon support, wherein the carbon support has a mode diameter of mesopores in the range of 2.5 nm to 5.0 nm, a BET specific surface area in the range of 700 m2/g to 1300 m2/g, a median diameter of particle diameter in the range of 0.10 ?m to 0.50 ?m, and a crystallite size of (002) plane of carbon in the range of 5.0 nm to 12.0 nm.
    Type: Application
    Filed: January 22, 2020
    Publication date: August 6, 2020
    Inventor: Rui IMOTO
  • Patent number: 9498771
    Abstract: To provide an exhaust gas catalyst using a fired aluminum phosphate body with more excellent performance, and a method for producing it. (1) An exhaust gas purification catalyst including at least one platinum-group metal selected from the group consisting of Pt, Rh and Pd having a mean particle diameter of between 0.50 nm and 2.0 nm, supported on a tridymite-type fired aluminum phosphate body. (2) A method for producing an exhaust gas purification catalyst, including the steps of: firing aluminum phosphate obtained from an aqueous solution prepared to a pH of 3.5 to 4.5, at a temperature of between 1000° C. and 1200° C. for 2 hours or longer, to obtain a fired aluminum phosphate body, and supporting at least one type of platinum-group metal selected from the group consisting of Pt, Rh and Pd on the fired aluminum phosphate body.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: November 22, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Rui Imoto, Daichi Sato, Satoshi Nagao, Masaya Ibe
  • Patent number: 9156027
    Abstract: An exhaust-gas catalyst carrier made of a composite of ?-alumina and a zirconia-titania solid solution, an exhaust-gas catalyst employing the exhaust-gas catalyst carrier, and a method of manufacturing the exhaust-gas catalyst carrier are provided.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: October 13, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Rui Imoto
  • Publication number: 20150217280
    Abstract: To provide an exhaust gas catalyst using a fired aluminum phosphate body with more excellent performance, and a method for producing it. (1) An exhaust gas purification catalyst including at least one platinum-group metal selected from the group consisting of Pt, Rh and Pd having a mean particle diameter of between 0.50 nm and 2.0 nm, supported on a tridymite-type fired aluminum phosphate body. (2) A method for producing an exhaust gas purification catalyst, including the steps of: firing aluminum phosphate obtained from an aqueous solution prepared to a pH of 3.5 to 4.5, at a temperature of between 1000° C. and 1200° C. for 2 hours or longer, to obtain a fired aluminum phosphate body, and supporting at least one type of platinum-group metal selected from the group consisting of Pt, Rh and Pd on the fired aluminum phosphate body.
    Type: Application
    Filed: September 6, 2013
    Publication date: August 6, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Rui Imoto, Daichi Sato, Satoshi Nagao, Masaya Ibe
  • Publication number: 20150196899
    Abstract: An exhaust gas purification catalyst includes: a substrate; a first catalyst layer that is arranged on an upper surface of the substrate and contains a first support and platinum supported on the first support, in which the first support contains a composite oxide which is formed of oxygen and at least one element selected from the group consisting of aluminum, phosphorus and boron and has an oxygen 1s binding energy in a range of 530 eV to 535 eV; and a second catalyst layer that is arranged on an upper surface of the first catalyst layer and contains a second support and rhodium supported on the second support, in which the second support contains a less-thermally-deteriorative ceria-zirconia composite oxide or a porous alumina.
    Type: Application
    Filed: January 2, 2015
    Publication date: July 16, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Rui IMOTO
  • Patent number: 9067193
    Abstract: An exhaust gas purifying catalyst, which is obtained by having at least one platinum group metal selected from the group consisting of Pt, Rh, and Pd supported on a calcined aluminum phosphate body. The calcined aluminum phosphate body has a tridymite crystal structure and the ratio of the cumulative pore distribution of pores having a size of 10 nm or less to the cumulative pore distribution of pores having a size of 300 nm or less is 20% or more in the calcined aluminum phosphate body. A method for producing an exhaust gas purifying catalyst including calcining aluminum phosphate, which has been obtained from an aqueous solution that is controlled to have a pH within a predetermined range, at a predetermined temperature for a predetermined period of time, thereby obtaining a calcined aluminum phosphate body; and having at least one platinum group metal selected from the group consisting of Pt, Rh, and Pd supported on the calcined aluminum phosphate body.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: June 30, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Satoshi Nagao, Rui Imoto, Daichi Sato, Yusaku Inatomi
  • Publication number: 20140336042
    Abstract: An exhaust gas purifying catalyst, which is obtained by having at least one platinum group metal selected from the group consisting of Pt, Rh, and Pd supported on a calcined aluminum phosphate body. The calcined aluminum phosphate body has a tridymite crystal structure and the ratio of the cumulative pore distribution of pores having a size of 10 nm or less to the cumulative pore distribution of pores having a size of 300 nm or less is 20% or more in the calcined aluminum phosphate body. A method for producing an exhaust gas purifying catalyst including calcining aluminum phosphate, which has been obtained from an aqueous solution that is controlled to have a pH within a predetermined range, at a predetermined temperature for a predetermined period of time, thereby obtaining a calcined aluminum phosphate body; and having at least one platinum group metal selected from the group consisting of Pt, Rh, and Pd supported on the calcined aluminum phosphate body.
    Type: Application
    Filed: December 18, 2012
    Publication date: November 13, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Satoshi Nagao, Rui Imoto, Daichi Sato, Yusaku Inatomi
  • Publication number: 20120270730
    Abstract: An exhaust-gas catalyst carrier made of a composite of ?-alumina and a zirconia-titania solid solution, an exhaust-gas catalyst employing the exhaust-gas catalyst carrier, and a method of manufacturing the exhaust-gas catalyst carrier are provided.
    Type: Application
    Filed: December 21, 2010
    Publication date: October 25, 2012
    Inventor: Rui Imoto
  • Publication number: 20100307133
    Abstract: An exhaust gas control apparatus for an internal combustion engine includes a NOx adsorbent that is provided in an exhaust passage of an internal combustion engine, and that adsorbs nitrogen monoxide; an active oxygen supply device that supplies active oxygen to an area upstream of the NOx adsorbent; and a control portion that performs a first control that does not cause the active oxygen supply device to supply the active oxygen while exhaust gas flows to the NOx adsorbent at a time of cold start of the internal combustion engine, whereby the nitrogen monoxide is adsorbed by the NOx adsorbent, wherein the control portion performs a second control that causes the active oxygen supply device to supply the active oxygen after the first control is finished, whereby the nitrogen monoxide adsorbed by the NOx adsorbent is converted to a nitrate or a nitrate ion on the NOx adsorbent.
    Type: Application
    Filed: June 3, 2010
    Publication date: December 9, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masao Watanabe, Koutarou Hayashi, Youhei Kinoshita, Rui Imoto