Patents by Inventor Noriyuki KITAO

Noriyuki KITAO 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: 20190245212
    Abstract: An oxygen evolution catalyst includes a core and a shell covering the surface of the core. The core includes ruthenium oxide or metal ruthenium in at least a surface portion. The shell includes titania or a composite oxide of titanium and ruthenium. Such an oxygen evolution catalyst is obtained by (a) dispersing core particles each including ruthenium oxide or metal ruthenium in at least a surface portion in a solvent to obtain a dispersion, (b) adding a Ti source to the dispersion to produce precursor particles in which the surface of each core particle is covered with a titania precursor, and (c) collecting the precursor particles from the dispersion and heat-treating the precursor particles after drying.
    Type: Application
    Filed: January 30, 2019
    Publication date: August 8, 2019
    Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shuhei YOSHINO, Kensaku KODAMA, Yoshio SAGESHIMA, Keiichiro OISHI, Yoriko HASEGAWA, Noriyuki KITAO
  • Patent number: 10232351
    Abstract: To produce a core-shell catalyst with high catalytic activity for a short period of time. Disclosed is a method for producing a core-shell catalyst comprising a core containing palladium and a shell containing platinum and coating the core, the method comprising: supplying palladium-containing particles and a copper-containing material to an acid solution; stirring the acid solution with introducing an oxygen-containing gas into the acid solution; coating at least a part of a surface of the palladium-containing particles with copper by applying a potential that is nobler than the oxidation reduction potential of copper to the palladium-containing particles in a copper ion-containing electrolyte after the stirring; and then forming the shell by substituting the copper coating at least a part of the surface of the palladium-containing particles with platinum by bringing the palladium-containing particles into contact with a platinum ion-containing solution.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: March 19, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Noriyuki Kitao, Nobuo Honma
  • Publication number: 20190051917
    Abstract: A control device for a fuel cell system comprises a hydrogen deficiency judging part configured to judge if a hydrogen deficiency which is a state in which an amount of hydrogen supplied to the fuel cell is insufficient compared with an amount of hydrogen required for power generation has occurred, a hydrogen deficiency elimination judging part configured to judge if the hydrogen deficiency has been eliminated after the hydrogen deficiency judging part judges that the hydrogen deficiency has occurred and a breakage control part configured to make the circuit breaker temporarily break an electrical connection of the fuel cell and the electrical load part when the hydrogen deficiency elimination judging part judges that the hydrogen deficiency has been eliminated.
    Type: Application
    Filed: July 9, 2018
    Publication date: February 14, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Noriyuki KITAO
  • Patent number: 10103388
    Abstract: Disclosed is a method for producing a fine catalyst particle comprising a palladium-containing particle and a platinum outermost layer covering the palladium-containing particle, wherein a first composite body containing palladium and platinum is formed by mixing the palladium-containing particle with a first solution in which a platinum compound is dissolved, and then covering at least part of a surface of the palladium-containing particle with platinum; wherein a second composite body containing palladium, platinum and copper is formed by mixing the first composite body with a second solution in which a copper compound is dissolved, and then covering at least part of a surface of the first composite body with copper using copper underpotential deposition; and wherein the copper in the second composite body is substituted with platinum derived from a third solution in which a platinum compound is dissolved.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: October 16, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keiichi Kaneko, Tsugio Fujisawa, Noriyuki Kitao, Makoto Adachi
  • Patent number: 9972848
    Abstract: The present invention is to provide fine catalyst particles with better catalytic performance than ever before and a carbon-supported catalyst with better catalytic performance than ever before.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: May 15, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Noriyuki Kitao, Hiroko Kimura, Makoto Adachi, Keiichi Kaneko
  • Patent number: 9941521
    Abstract: The disclosure is to provide a method for producing a core-shell catalyst that is able to increase the power generation performance of a membrane electrode assembly. A dispersion is prepared, in which a palladium-containing particle support, in which palladium-containing particles are supported on an electroconductive support, is dispersed in water; hydrogen gas is bubbled into the dispersion; the palladium-containing particles are acid treated after the bubbling; copper is deposited on the surface of the palladium-containing particles by applying a potential that is nobler than the oxidation reduction potential of copper to the palladium-containing particles in a copper ion-containing electrolyte after the acid treatment; and then a shell is formed by substituting the copper deposited on the surface of the palladium-containing particles with platinum by bringing the copper deposited on the surface of the palladium-containing particles into contact with a platinum ion-containing solution.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: April 10, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Noriyuki Kitao, Naoyuki Sasaki, Tsugio Fujisawa
  • Patent number: 9859567
    Abstract: Disclosed is a method for producing a catalyst, wherein the method comprises: a supplying step of supplying a dispersion containing a palladium-containing fine particle from a supplying part into a reaction container; a preparing step of preparing a copper-palladium-containing complex in which at least part of a surface of the palladium-containing fine particle is covered with copper, by passing the dispersion through a reacting part and bringing the palladium-containing fine particle in the dispersion into contact with a copper-containing member in the reacting part; and a substituting step of substituting the copper in the copper-palladium-containing complex emitted from an emitting part with platinum by bringing the complex into contact with a platinum-containing solution.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: January 2, 2018
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, KOBE STEEL, LTD.
    Inventors: Noriyuki Kitao, Tsugio Fujisawa, Akira Matsuoka, Koji Noishiki, Tomohiro Oozono
  • Publication number: 20170331119
    Abstract: A fuel cell includes: an electrolyte membrane; an anode catalyst layer; a cathode catalyst layer; and a cathode gas diffusion layer. The cathode catalyst layer includes an ionomer, the ionomer includes copolymers each of which has a hydrophilic block. The hydrophilic block is positioned at a terminal of a copolymer which includes a hydrophobic portion and a hydrophilic portion having a sulfonic acid group. The hydrophilic block has an aggregated structure of the hydrophilic portion. A gas diffusion resistance coefficient of the cathode gas diffusion layer is 3.2×10?4 m or lower. The gas diffusion resistance coefficient is expressed by “Gas Diffusion Resistance Coefficient=Thickness of Cathode Gas Diffusion Layer/(Porosity of Cathode Gas Diffusion Layer)4”.
    Type: Application
    Filed: May 11, 2017
    Publication date: November 16, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Noriyuki KITAO
  • Publication number: 20170214060
    Abstract: The disclosure is to provide a method for producing a core-shell catalyst that is able to increase the power generation performance of a membrane electrode assembly. A dispersion is prepared, in which a palladium-containing particle support, in which palladium-containing particles are supported on an electroconductive support, is dispersed in water; hydrogen gas is bubbled into the dispersion; the palladium-containing particles are acid treated after the bubbling; copper is deposited on the surface of the palladium-containing particles by applying a potential that is nobler than the oxidation reduction potential of copper to the palladium-containing particles in a copper ion-containing electrolyte after the acid treatment; and then a shell is formed by substituting the copper deposited on the surface of the palladium-containing particles with platinum by bringing the copper deposited on the surface of the palladium-containing particles into contact with a platinum ion-containing solution.
    Type: Application
    Filed: April 3, 2015
    Publication date: July 27, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Noriyuki KITAO, Naoyuki SASAKI, Tsugio FUJISAWA
  • Publication number: 20170209850
    Abstract: To produce a core-shell catalyst with high catalytic activity for a short period of time. Disclosed is a method for producing a core-shell catalyst comprising a core containing palladium and a shell containing platinum and coating the core, the method comprising: supplying palladium-containing particles and a copper-containing material to an acid solution; stirring the acid solution with introducing an oxygen-containing gas into the acid solution; coating at least a part of a surface of the palladium-containing particles with copper by applying a potential that is nobler than the oxidation reduction potential of copper to the palladium-containing particles in a copper ion-containing electrolyte after the stirring; and then forming the shell by substituting the copper coating at least a part of the surface of the palladium-containing particles with platinum by bringing the palladium-containing particles into contact with a platinum ion-containing solution.
    Type: Application
    Filed: August 7, 2015
    Publication date: July 27, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Noriyuki KITAO, Nobuo HONMA
  • Publication number: 20170117554
    Abstract: The present invention is to provide fine catalyst particles with better catalytic performance than ever before and a carbon-supported catalyst with better catalytic performance than ever before.
    Type: Application
    Filed: February 13, 2015
    Publication date: April 27, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Noriyuki KITAO, Hiroko KIMURA, Makoto ADACHI, Keiichi KANEKO
  • Publication number: 20160260984
    Abstract: The present invention is to provide a carbon-supported catalyst which has better catalytic performance than conventional carbon-supported catalysts.
    Type: Application
    Filed: August 25, 2014
    Publication date: September 8, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Mayumi YAMADA, Noriyuki KITAO, Makoto ADACHI, Keiichi KANEKO
  • Publication number: 20160218370
    Abstract: Disclosed is a method for producing a catalyst, wherein the method comprises: a supplying step of supplying a dispersion containing a palladium-containing fine particle from a supplying part into a reaction container; a preparing step of preparing a copper-palladium-containing complex in which at least part of a surface of the palladium-containing fine particle is covered with copper, by passing the dispersion through a reacting part and bringing the palladium-containing fine particle in the dispersion into contact with a copper-containing member in the reacting part; and a substituting step of substituting the copper in the copper-palladium-containing complex emitted from an emitting part with platinum by bringing the complex into contact with a platinum-containing solution.
    Type: Application
    Filed: December 22, 2015
    Publication date: July 28, 2016
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Noriyuki KITAO, Tsugio FUJISAWA, Akira MATSUOKA, Koji NOISHIKI, Tomohiro OOZONO
  • Patent number: 9385377
    Abstract: An object of the present invention is to provide a production method which can increase the activity of a catalyst particle comprising a core particle and an outermost layer, the core particle comprising at least one of palladium and a palladium alloy, and the outermost layer comprising at least one of platinum and a platinum alloy and covering the core particle.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: July 5, 2016
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AUDI AG
    Inventors: Keiichi Kaneko, Naoki Takehiro, Takumi Taniguchi, Tatsuya Arai, Noriyuki Kitao, Makoto Adachi, Hiroko Kimura
  • Publication number: 20160079607
    Abstract: Disclosed is a method for producing a fine catalyst particle comprising a palladium-containing particle and a platinum outermost layer covering the palladium-containing particle, wherein a first composite body containing palladium and platinum is formed by mixing the palladium-containing particle with a first solution in which a platinum compound is dissolved, and then covering at least part of a surface of the palladium-containing particle with platinum; wherein a second composite body containing palladium, platinum and copper is formed by mixing the first composite body with a second solution in which a copper compound is dissolved, and then covering at least part of a surface of the first composite body with copper using copper underpotential deposition; and wherein the copper in the second composite body is substituted with platinum derived from a third solution in which a platinum compound is dissolved.
    Type: Application
    Filed: May 13, 2013
    Publication date: March 17, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keiichi KANEKO, Tsugio FUJISAWA, Noriyuki KITAO, Makoto ADACHI
  • Publication number: 20150318560
    Abstract: An object of the present invention is to provide a production method which can increase the activity of a catalyst particle comprising a core particle and an outermost layer, the core particle comprising at least one of palladium and a palladium alloy, and the outermost layer comprising at least one of platinum and a platinum alloy and covering the core particle.
    Type: Application
    Filed: November 7, 2012
    Publication date: November 5, 2015
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, BALLARD POWER SYSTEMS INC.
    Inventors: Keiichi KANEKO, Naoki TAKEHIRO, Takumi TANIGUCHI, Tatsuya ARAI, Noriyuki KITAO, Makoto ADACHI, Hiroko KIMURA
  • Publication number: 20110214737
    Abstract: A method of manufacturing a solar cell according to the present invention is a method of manufacturing a solar cell which includes a reflective part 5, 6 configured to reflect sunlight to a back surface of a photovoltaic power generating part 3. The reflective part includes a reflective plate 6 and a backing substrate 5. The method includes a laminate forming process in which the reflective plate 6 and the backing substrate 5 are formed concurrently by laminate forming. With this arrangement, a method of manufacturing a solar cell, which can improve efficiency of a manufacturing process as a whole, is obtained.
    Type: Application
    Filed: November 24, 2009
    Publication date: September 8, 2011
    Inventors: Noriyuki Kitao, Shintaro Inoue, Yoshinori Suga
  • Publication number: 20100263716
    Abstract: A solar cell module of the present invention is provided with a reflector that reflects incident light to a solar cell, and a reflecting surface of the reflector is in a concave-convex shape. The reflector is constructed with a diffuse reflective material that diffusely reflects light. Some of sunlight that enters the solar cell module hits a front surface of the solar cell, and the rest passes through a gap between the solar cells and then enters the diffuse reflector. The sunlight that enters the diffuse reflector is diffusely reflected, and thus an amount of light that enters a back surface of the solar cell increases. Thereby, the solar cell module can increase power generation efficiency.
    Type: Application
    Filed: February 25, 2010
    Publication date: October 21, 2010
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventor: Noriyuki KITAO