Patents by Inventor Mayuko Osaki

Mayuko Osaki 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: 10361427
    Abstract: An all-solid-state battery having an olivine-type positive electrode active material and a sulfur solid electrolyte and a method for producing the all-solid-state battery is provided. The positive electrode active material is a positive electrode active material in which primary particles aggregate into secondary particles. The primary particles have an olivine-type positive electrode active material and a coating layer that coats all or a portion of the olivine-type positive electrode active material. The coating layer contains a transition metal derived from the olivine-type positive electrode active material, lithium, phosphorous and oxygen as components thereof, and the concentration of the transition metal is lower the concentration of the olivine-type positive electrode active material.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: July 23, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Mayuko Osaki, Yohei Shindo, Manabu Imano, Hideyuki Koga, Hidenori Miki
  • Patent number: 10141762
    Abstract: The all-solid-state battery system that has an all-solid-state battery, the all-solid-state battery having a positive electrode active material layer, a solid electrolyte layer and a negative electrode active material layer, and a control device that controls the lower limit discharge potential of the positive electrode active material layer of the all-solid-state battery. The positive electrode active material layer and/or the solid electrolyte layer have a sulfide solid electrolyte. In addition, the positive electrode active material layer has an olivine-type positive electrode active material. In addition, the capacity of the negative electrode active material layer is lower than the capacity of the positive electrode active material layer. In addition, the control device controls the lower limit discharge potential of the positive electrode active material layer during normal use of the all-solid-state battery to within the range of 1.6 V vs. Li/Li+ to 2.1 V vs. Li/Li+.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: November 27, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yohei Shindo, Manabu Imano, Mayuko Osaki, Taishi Shiotsuki
  • Patent number: 10128532
    Abstract: Sulfide solid electrolyte material with favorable ion conductivity, wherein charge and discharge efficiency is inhibited from decreasing. Solves problem by providing a sulfide solid electrolyte material including a Li element, Si element, P element, S element and O element, having peak at position of 2?=29.58°±0.50° in X-ray diffraction measurement using CuK? ray, wherein sulfide solid electrolyte material does not have peak at position of 2?=27.33°±0.50° in X-ray diffraction measurement using CuK? ray, or in case of having peak at position of 2?=27.33°±0.50°, value of IB/IA is 1 or less when diffraction intensity at peak of 2?=29.58°±0.50° is regarded as IA and diffraction intensity at peak of 2?=27.33°±0.50° is regarded as IB; and wherein molar fraction of O element to total of S element and O element is larger than 0.2.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: November 13, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuki Kato, Mayuko Osaki
  • Patent number: 9748602
    Abstract: A sulfide solid electrolyte material with favorable ion conductivity and high reduction resistance. The object is attained by providing sulfide solid electrolyte material comprising: Li element; Ge element; P element; and S element, wherein the sulfide solid electrolyte material peaks at a position of 2?=29.58°±0.50° in X-ray diffraction measurement using CuK? ray, the sulfide solid electrolyte material does not peak at a position of 2?=27.33°±0.50° in X-ray diffraction measurement using CuK? ray or when diffraction intensity at the peak of 2?=29.58°±0.50° is regarded as IA and diffraction intensity at the peak of 2?=27.33°±0.50° is regarded as IB, a value of IB/IA is less than 1.0, and part of the P element in a crystal phase peaking at the position of 2?=29.58°±0.50° is substituted with a B element.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: August 29, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Mayuko Osaki, Yuki Kato
  • Publication number: 20170155127
    Abstract: The all-solid-state battery system that has an all-solid-state battery, the all-solid-state battery having a positive electrode active material layer, a solid electrolyte layer and a negative electrode active material layer, and a control device that controls the lower limit discharge potential of the positive electrode active material layer of the all-solid-state battery. The positive electrode active material layer and/or the solid electrolyte layer have a sulfide solid electrolyte. In addition, the positive electrode active material layer has an olivine-type positive electrode active material. In addition, the capacity of the negative electrode active material layer is lower than the capacity of the positive electrode active material layer. In addition, the control device controls the lower limit discharge potential of the positive electrode active material layer during normal use of the all-solid-state battery to within the range of 1.6 V vs. Li/Li+ to 2.1 V vs. Li/Li+.
    Type: Application
    Filed: November 29, 2016
    Publication date: June 1, 2017
    Inventors: Yohei Shindo, Manabu Imano, Mayuko Osaki, Taishi Shiotsuki
  • Publication number: 20170084912
    Abstract: An all-solid-state battery having an olivine-type positive electrode active material and a sulfur solid electrolyte and a method for producing the all-solid-state battery is provided. The positive electrode active material is a positive electrode active material in which primary particles aggregate into secondary particles. The primary particles have an olivine-type positive electrode active material and a coating layer that coats all or a portion of the olivine-type positive electrode active material. The coating layer contains a transition metal derived from the olivine-type positive electrode active material, lithium, phosphorous and oxygen as components thereof, and the concentration of the transition metal is lower the concentration of the olivine-type positive electrode active material.
    Type: Application
    Filed: September 16, 2016
    Publication date: March 23, 2017
    Inventors: Mayuko Osaki, Yohei Shindo, Manabu Imano, Hideyuki Koga, Hidenori Miki
  • Patent number: 9297288
    Abstract: Provided is an exhaust purification system for an internal combustion engine.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: March 29, 2016
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Mayuko Osaki, Kazutoshi Akashi, Masao Watanabe, Shigeharu Takagi, Takeshi Nobukawa
  • Publication number: 20160064771
    Abstract: A sulfide solid electrolyte material with favorable ion conductivity and high reduction resistance. The object is attained by providing sulfide solid electrolyte material comprising: Li element; Ge element; P element; and S element, wherein the sulfide solid electrolyte material peaks at a position of 2?=29.58°±0.50° in X-ray diffraction measurement using CuK? ray, the sulfide solid electrolyte material does not peak at a position of 2?=27.33°±0.50° in X-ray diffraction measurement using CuK? ray or when diffraction intensity at the peak of 2?=29.58°±0.50° is regarded as IA and diffraction intensity at the peak of 2?=27.33°±0.50° is regarded as IB, a value of IB/IA is less than 1.0, and part of the P element in a crystal phase peaking at the position of 2?=29.58°±0.50° is substituted with a B element.
    Type: Application
    Filed: April 16, 2014
    Publication date: March 3, 2016
    Inventors: Mayuko OSAKI, Yuki KATO
  • Publication number: 20150372345
    Abstract: Sulfide solid electrolyte material with favorable ion conductivity, wherein charge and discharge efficiency is inhibited from decreasing. Solves problem by providing a sulfide solid electrolyte material including a Li element, Si element, P element, S element and O element, having peak at position of 2?=29.58°±0.50° in X-ray diffraction measurement using CuK? ray, wherein sulfide solid electrolyte material does not have peak at position of 2?=27.33°±0.50° in X-ray diffraction measurement using CuK? ray, or in case of having peak at position of 2?=27.33°±0.50°, value of IB/IA is 1 or less when diffraction intensity at peak of 2?=29.58°±0.50° is regarded as IA and diffraction intensity at peak of 2?=27.33°±0.50° is regarded as IB; and wherein molar fraction of O element to total of S element and O element is larger than 0.2.
    Type: Application
    Filed: December 18, 2013
    Publication date: December 24, 2015
    Inventors: Yuki KATO, Mayuko OSAKI
  • Patent number: 9132419
    Abstract: [Problem] The present invention provides a NOx purification catalyst which utilizes Ag as one of the catalyst components and exhibits NOx purification performance without adjustment to a special exhaust gas composition, as well as a method of producing the same. [Means for Solution] The present invention provides a nitrogen oxide purification catalyst in which particulates are supported on a metal oxide carrier, wherein the aforementioned particulates consist of Ag and Ni and the aforementioned Ag and Ni are at least partially alloyed. Also provided is a method of producing the aforementioned catalyst, comprising the step of preparing a colloidal suspension in which the ratio of Ag is 10 to 90 at % with respect to the total amount of Ag and Ni.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: September 15, 2015
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, CAMBRIDGE ENTERPRISE LIMITED
    Inventors: Mayuko Osaki, Yoshiaki Inagaki, Atsushi Tanaka, Brian Johnson, Andrew Wheatley, Maciej Cabaj, Masaya Ibe
  • Patent number: 9084988
    Abstract: The present invention relates to a catalyst able to exhibit an NOx purification performance at a low temperature and/or in an oxidizing atmosphere, that is, a nitrogen oxides purification catalyst composed of particles having an average particle size of 0.2 to 100 nm and including gold atoms and iron atoms in a state of close proximity.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: July 21, 2015
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, CAMBRIDGE ENTERPRISE LIMITED
    Inventors: Mayuko Osaki, Hirohito Hirata, Naoyuki Hara, Brian Johnson, Andrew Wheatley, Helen Skelton, Muriel Lepage
  • Patent number: 9079167
    Abstract: The invention relates to a catalyst able to exhibit an NOX purification performance at a low temperature and/or in an oxidizing atmosphere, that is, a nitrogen oxide purification catalyst including gold atoms and nickel atoms in a solid and a state of close proximity.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: July 14, 2015
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, CAMBRIDGE ENTERPRISE LIMITED
    Inventors: Mayuko Osaki, Hirohito Hirata, Naoyuki Hara, Brian Johnson, Andrew Wheatley, Helen Skelton, Muriel Lepage
  • Patent number: 9050584
    Abstract: To provide a production method of a base metal catalyst for exhaust gas purification and with a catalyst activity, in which a base metal-supported catalyst is uniformly supported by a honeycomb substrate. A production method of a catalyst for exhaust gas purification, comprising the steps of preparing a honeycomb substrate having a plurality of cells, preparing a base metal-supported catalyst comprising a carrier supporting a metal containing a base metal having an exhaust gas purification performance, preparing a slurry having a pH of 7 or more by dispersing the base metal-supported catalyst in an aqueous solution, and introducing the slurry to a partition wall surface of the honeycomb substrate.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: June 9, 2015
    Assignee: Toyota Jidosha Kabushiki Kabushiki Kaisha
    Inventors: Mayuko Osaki, Michio Miura
  • Publication number: 20140342902
    Abstract: To provide a production method of a base metal catalyst for exhaust gas purification and with a catalyst activity, in which a base metal-supported catalyst is uniformly supported by a honeycomb substrate. A production method of a catalyst for exhaust gas purification, comprising the steps of preparing a honeycomb substrate having a plurality of cells, preparing a base metal-supported catalyst comprising a carrier supporting a metal containing a base metal having an exhaust gas purification performance, preparing a slurry having a pH of 7 or more by dispersing the base metal-supported catalyst in an aqueous solution, and introducing the slurry to a partition wall surface of the honeycomb substrate.
    Type: Application
    Filed: January 15, 2013
    Publication date: November 20, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Mayuko Osaki, Michio Miura
  • Publication number: 20140328726
    Abstract: An exhaust gas purification system uses an NOx purification apparatus for reducing the amount of precious metal used and exhibits an NOx purification performance at a low temperature and/or in an oxidizing atmosphere, and provides NOx purification performance even by an exhaust gas composition including HC and NOx at the time of a non-steady operation. An exhaust gas purification system using an NOx purification apparatus with an NOx purification catalyst in an exhaust gas passage has a carrier for nanoparticles including gold atoms and nickel atoms in close proximity and an apparatus for predicting the amount of exhaust of NOx. When it is predicted that NOx will be exhausted, carbon monoxide is increased in the exhaust gas fed to the NOx purification catalyst, and, when it is predicted that NOx will not be exhausted, exhaust gas exhausted from an engine is purified without injection of excess fuel.
    Type: Application
    Filed: July 18, 2014
    Publication date: November 6, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Mayuko OSAKI, Muriel LEPAGE
  • Publication number: 20140305105
    Abstract: An exhaust gas purification system provided with an NOX purification catalyst reducing the amount of use of precious metals and/or able to exhibit an NOX purification performance at a low temperature and/or in an oxidizing atmosphere and having an NOX purification performance even for an exhaust gas composition containing hydrocarbons and oxygen together with a low temperature and/or oxidizing atmosphere, that is, an exhaust gas purification system provided with an NOX purification catalyst provided in an exhaust gas passage and comprised of carrier particles on which nanoparticles in which gold atoms and nickel atoms are included in a state in close proximity are carried and an oxidation catalyst oxidizing hydrocarbons in exhaust gas at a position at an upstream side of the NOX purification catalyst.
    Type: Application
    Filed: June 27, 2014
    Publication date: October 16, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Mayuko OSAKI, Hirohito HIRATA, Muriel LEPAGE
  • Publication number: 20140216013
    Abstract: Provided is an exhaust purification system for an internal combustion engine.
    Type: Application
    Filed: December 16, 2011
    Publication date: August 7, 2014
    Inventors: Mayuko Osaki, Kazutoshi Akashi, Masao Watanabe, Shigeharu Tagagi, Takeshi Nobukawa
  • Publication number: 20140194280
    Abstract: The present invention relates to a catalyst able to exhibit an NOx purification performance at a low temperature and/or in an oxidizing atmosphere, that is, a nitrogen oxides purification catalyst composed of particles having an average particle size of 0.2 to 100 nm and including gold atoms and iron atoms in a state of close proximity.
    Type: Application
    Filed: March 13, 2014
    Publication date: July 10, 2014
    Applicants: CAMBRIDGE ENTERPRISE LIMITED, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Mayuko OSAKI, Hirohito HIRATA, Naoyuki HARA, Brian JOHNSON, Andrew WHEATLEY, Helen SKELTON, Muriel LEPAGE
  • Publication number: 20140194281
    Abstract: The invention relates to a catalyst able to exhibit an NOX purification performance at a low temperature and/or in an oxidizing atmosphere, that is, a nitrogen oxide purification catalyst including gold atoms and nickel atoms in a solid and a state of close proximity.
    Type: Application
    Filed: March 13, 2014
    Publication date: July 10, 2014
    Applicants: CAMBRIDGE ENTERPRISE LIMITED, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Mayuko OSAKI, Hirohito HIRATA, Naoyuki HARA, Brian JOHNSON, Andrew WHEATLEY, Helen SKELTON, Muriel LEPAGE
  • Publication number: 20140113808
    Abstract: [Problem] The present invention provides a NOx purification catalyst which utilizes Ag as one of the catalyst components and exhibits NOx purification performance without adjustment to a special exhaust gas composition, as well as a method of producing the same. [Means for Solution] The present invention provides a nitrogen oxide purification catalyst in which particulates are supported on a metal oxide carrier, wherein the aforementioned particulates consist of Ag and Ni and the aforementioned Ag and Ni are at least partially alloyed. Also provided is a method of producing the aforementioned catalyst, comprising the step of preparing a colloidal suspension in which the ratio of Ag is 10 to 90 at % with respect to the total amount of Ag and Ni.
    Type: Application
    Filed: July 7, 2011
    Publication date: April 24, 2014
    Applicants: CAMBRIDGE ENTERPRISE LIMITED, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Mayuko Osaki, Yoshiaki Inagaki, Atsushi Tanaka, Brian Johnson, Andrew Wheatley, Maciej Cabaj, Masaya Ibe