Patents by Inventor Hideki Oki

Hideki Oki 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: 9397336
    Abstract: A battery active material includes a crystal phase that is represented by a formula Y2?xScxTi2O5S2 (where 0<x<2), and has a Ruddlesden-Popper structure.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: July 19, 2016
    Assignee: TOYTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takeshi Tojigamori, Hideki Oki
  • Patent number: 9160000
    Abstract: An active material for a battery, which has high thermal stability and low electric potential. According to the invention, an active material for a battery including an M element in Group III, a Ti element, an O element, and an S element and having an M2Ti2O5S2 crystalline phase is provided to solve the problem.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: October 13, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takeshi Tojigamori, Hideki Oki
  • Patent number: 9093708
    Abstract: The main object of the present invention is to provide a method for producing a cathode active material layer, which allows a high-purity lithium complex oxide by restraining impurities from being produced, allows a flat film, and allows orientation control. The present invention solves the above-mentioned problems by providing a method for producing a cathode active material layer, in which a cathode active material layer is formed on a substrate and contains LiXaOb (X is a transition metal element of at least one kind selected from the group consisting of Co, Ni and Mn, a=0.7-1.3, and b=1.5-2.5), characterized in that the method comprises the steps of: forming a cathode active material precursor-film on the above-mentioned substrate by a physical vapor deposition method while setting a temperature of the substrate at 300° C.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: July 28, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hideki Oki
  • Patent number: 8993178
    Abstract: A magnesium battery (10) is constituted of a negative electrode (1), a positive electrode (2) and an electrolyte (3). The negative electrode (1) is formed of metallic magnesium and can also be formed of an alloy. The positive electrode (2) is composed of a positive electrode active material, for example, a metal oxide, graphite fluoride ((CF)n) or the like, etc. The electrolytic solution (3) is, for example, a magnesium ion-containing nonaqueous electrolytic solution prepared by dissolving magnesium(II) chloride (MgCl2) and dimethylaluminum chloride ((CH3)2AlCl) in tetrahydrofuran (THF). In the case of dissolving and depositing magnesium by using this electrolytic solution, the following reaction proceeds in the normal direction or reverse direction.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: March 31, 2015
    Assignee: Sony Corporation
    Inventors: Yuri Nakayama, Kenta Yamamoto, Yoshihiro Kudo, Hideki Oki
  • Patent number: 8980476
    Abstract: An active material for a battery contains a Y2Ti2O5S2 crystalline phase, and has an IB/IA value of 0.3 or smaller and an IC/IA value of 0.15 or smaller, wherein IA, IB and IC are the peak intensity of the Y2Ti2O5S2 crystalline phase at 2?=34.5°, the peak intensity of a Y2T2O7 crystalline phase at 2?35.6°, and the peak intensity of TiS2 at 2?=34.1°, respectively, that are measured by X-ray diffraction using CuK? radiation. The active material is synthesized by preparing a raw material composition containing TiS2, TiO2 and Y2O3 and having a molar ratio of TiS2 to Y2O3 of higher than 1 or containing TiS2, TiO2 and Y2O3 and having a molar ratio of TiO2 to Y2O3 of lower than 1, and heating the raw material composition. A positive or negative-electrode active material layer included in the battery may be contain the active material.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: March 17, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takeshi Tojigamori, Hideki Oki
  • Patent number: 8920975
    Abstract: Provided is a method of producing a nitrided lithium-transition metal compound oxide having a rock-salt layer structure or a spinel structure, including: preparing a raw material composite that has a raw material containing lithium, transition metal, and oxygen and a nitriding agent that is expressed by a following General Formula (1) and is solid or liquid at room temperature (25° C.); and synthesizing the nitrided lithium-transition metal compound oxide by firing the raw material composite to nitride the raw material. R1, R2, and R3 are independent of each other and are each a functional group having at least one of carbon (C), hydrogen (H), oxygen (O), and nitrogen (N).
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: December 30, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideki Oki, Toshihiro Seguchi
  • Patent number: 8852740
    Abstract: An electrode active material including a lithium-transition metal complex oxide having a layered rock salt structure or spinel structure and a fluorine and nitrogen introduced therein. Also disclosed is an electrode active material production method including a nitrogen introduction step of synthesizing a lithium-transition metal complex oxide (c) having a layered rock salt structure or spinel structure and a fluorine and nitrogen introduced therein, by firing a material composition including a lithium-transition metal complex oxide (a) having a fluorine introduced therein and a nitriding agent (b) being represented by the formula (1) and being solid or liquid at ordinary temperature.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: October 7, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideki Oki, Toshihiro Seguchi
  • Publication number: 20140170495
    Abstract: A battery active material includes a crystal phase that is represented by a formula Y2?xScxTi2O5S2 (where 0<x<2), and has a Ruddlesden-Popper structure.
    Type: Application
    Filed: December 11, 2013
    Publication date: June 19, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takeshi TOJIGAMORI, Hideki OKI
  • Publication number: 20130071754
    Abstract: A main object of the present invention is to provide an electrode body which can obtain a high capacity secondary battery. The invention provides an electrode body having an active material composed of a metal oxide and a conductive auxiliary agent obtained by causing a partial deficiency to an oxygen atom in the metal oxide and introducing a nitrogen atom into the metal oxide, whereby the above object can be achieved.
    Type: Application
    Filed: April 30, 2010
    Publication date: March 21, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hidenori Miki, Hideki Oki
  • Publication number: 20130052540
    Abstract: An active material for a battery contains a Y2Ti2O5S2 crystalline phase, and has an IB/IA value of 0.3 or smaller and an IC/IA value of 0.15 or smaller, wherein IA, IC and IC are the peak intensity of the Y2Ti2O5S2 crystalline phase at 2?=34.5°, the peak intensity of a Y2T2O7 crystalline phase at 2?35.6°, and the peak intensity of TiS2 at 2?=34.1°, respectively, that are measured by X-ray diffraction using CuK? radiation. The active material is synthesized by preparing a raw material composition containing TiS2, TiO2 and Y2O3 and having a molar ratio of TiS2 to Y2O3 of higher than 1 or containing TiS2, TiO2 and Y2O3 and having a molar ratio of TiO2 to Y2O3 of lower than 1, and heating the raw material composition. A positive or negative-electrode active material layer included in the battery may be contain the active material.
    Type: Application
    Filed: August 9, 2012
    Publication date: February 28, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takeshi TOJIGAMORI, Hideki OKI
  • Publication number: 20130022815
    Abstract: An electrode active material including a lithium-transition metal complex oxide having a layered rock salt structure or spinel structure and a fluorine and nitrogen introduced therein. Also disclosed is an electrode active material production method including a nitrogen introduction step of synthesizing a lithium-transition metal complex oxide (c) having a layered rock salt structure or spinel structure and a fluorine and nitrogen introduced therein, by firing a material composition including a lithium-transition metal complex oxide (a) having a fluorine introduced therein and a nitriding agent (b) being represented by the formula (1) and being solid or liquid at ordinary temperature.
    Type: Application
    Filed: March 12, 2010
    Publication date: January 24, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideki Oki, Toshihiro Seguchi
  • Publication number: 20130022875
    Abstract: The present invention is to provide an active material for a battery, which has high thermal stability and low electric potential. According to the invention, an active material for a battery comprising a M element in Group III, a Ti element, an O element, and a S element and having an M2Ti2O5S2 crystalline phase is provided to solve the problem.
    Type: Application
    Filed: February 18, 2011
    Publication date: January 24, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takeshi Tojigamori, Hideki Oki
  • Patent number: 8286353
    Abstract: A method of manufacturing an outer retainer for a one-way clutch having an outward flange at one side edge thereof involves punching out a part of an annular portion having the outward flange by sliding a punch toward an axis of the outer retainer substantially in an axially inner direction from a retainer outer periphery-sided curve portion of the outward flange to a retainer inner periphery-sided curve portion thereof in a way that uses a die and the punch.
    Type: Grant
    Filed: July 21, 2008
    Date of Patent: October 16, 2012
    Assignee: NSK-Warner K.K.
    Inventors: Toshio Nagata, Hiroki Segawa, Hideki Oki, Seiji Nishimura
  • Publication number: 20120202119
    Abstract: A main object of the present invention is to an active material for battery having a high thermal stability and a low electric potential. The object is attained by providing the active material for battery contains an Y element, a Ba element, a Cu element, and an O element and contains a YBa2Cu3O7-? crystalline phase (? satisfies 0???0.5).
    Type: Application
    Filed: March 25, 2010
    Publication date: August 9, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideki Oki, Koji Kawamoto
  • Publication number: 20120015251
    Abstract: The main object of the present invention is to provide a method for producing a cathode active material layer, which allows a high-purity lithium complex oxide by restraining impurities from being produced, allows a flat film, and allows orientation control. The present invention solves the above-mentioned problems by providing a method for producing a cathode active material layer, in which a cathode active material layer is formed on a substrate and contains LiXaOb (X is a transition metal element of at least one kind selected from the group consisting of Co, Ni and Mn, a=0.7-1.3, and b=1.5-2.5), characterized in that the method comprises the steps of: forming a cathode active material precursor-film on the above-mentioned substrate by a physical vapor deposition method while setting a temperature of the substrate at 300° C.
    Type: Application
    Filed: July 13, 2009
    Publication date: January 19, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hideki Oki
  • Publication number: 20110171536
    Abstract: A cathode (1) is formed by compression bonding a mixture to a cathode current collecting net (5). The mixture includes a cathode active material and an electroconductive material such as graphite powder. The cathode active material is a halide of at least one metal element selected from the group consisting of Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, and Zn. An anode (2) is composed typically of a metallic magnesium plate. A separator (3) composed typically of polyethylene glycol is arranged between the cathode (1) and the anode (2) to avoid direct contact between them. A battery chamber (8) is filled with an electrolytic solution (4) and is hermetically sealed with a gasket (9). The electrolytic solution (4) may be a solution of a suitable metal ion-containing salt in an aprotic organic solvent, such as a solution of Mg(ACl2EtBu)2 in tetrahydrofuran (THF).
    Type: Application
    Filed: November 14, 2006
    Publication date: July 14, 2011
    Applicant: Sony Corporation
    Inventors: Hideki Oki, Yuri Nakayama, Kazuhiro Noda
  • Publication number: 20100297505
    Abstract: Provided is a method of producing a nitrided Li—Ti compound oxide, including: preparing a raw material composite that has a raw material containing lithium, titanium, and oxygen and a nitriding agent that is expressed by a following General Formula (1) and is solid or liquid at room temperature (25° C.); and synthesizing the nitrided Li—Ti compound oxide by firing the raw material composite to nitride the raw material. R1, R2, and R3 are independent of each other and are each a functional group having at least one of carbon (C), hydrogen (H), oxygen (O), and nitrogen (N).
    Type: Application
    Filed: May 21, 2010
    Publication date: November 25, 2010
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideki Oki, Toshihiro Seguchi
  • Publication number: 20100297504
    Abstract: Provided is a method of producing a nitrided lithium-transition metal compound oxide having a rock-salt layer structure or a spinel structure, including: preparing a raw material composite that has a raw material containing lithium, transition metal, and oxygen and a nitriding agent that is expressed by a following General Formula (1) and is solid or liquid at room temperature (25° C.); and synthesizing the nitrided lithium-transition metal compound oxide by firing the raw material composite to nitride the raw material. R1, R2, and R3 are independent of each other and are each a functional group having at least one of carbon (C), hydrogen (H), oxygen (O), and nitrogen (N).
    Type: Application
    Filed: May 21, 2010
    Publication date: November 25, 2010
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideki Oki, Toshihiro Seguchi
  • Publication number: 20100136438
    Abstract: A magnesium battery (10) is constituted of a negative electrode (1), a positive electrode (2) and an electrolyte (3). The negative electrode (1) is formed of metallic magnesium and can also be formed of an alloy. The positive electrode (2) is composed of a positive electrode active material, for example, a metal oxide, graphite fluoride ((CF)n) or the like, etc. The electrolytic solution (3) is, for example, a magnesium ion-containing nonaqueous electrolytic solution prepared by dissolving magnesium(II) chloride (MgCl2) and dimethylaluminum chloride ((CH3)2AlCl) in tetrahydrofuran (THF). In the case of dissolving and depositing magnesium by using this electrolytic solution, the following reaction proceeds in the normal direction or reverse direction.
    Type: Application
    Filed: June 5, 2008
    Publication date: June 3, 2010
    Applicant: Sony Corporation
    Inventors: Yuri Nakayama, Kenta Yamamoto, Yoshirio Kudo, Hideki Oki
  • Patent number: 7540212
    Abstract: A method of manufacturing a clutch housing which accommodates therein a plurality of clutch plates adapted to be engaged together so as to transmit a torque, wherein a drum portion and a boss portion can be integrally formed from a plate material so as to form a thick portion having a thickness of not less than approximately 1.3 times as large as that of the plate material and a thin portion having a thickness of not greater than approximately ½ of that of the plate material.
    Type: Grant
    Filed: August 29, 2005
    Date of Patent: June 2, 2009
    Assignee: NSK Warner K.K.
    Inventors: Hideki Oki, Shouji Yatsuyanagi, Tomoyuki Miyazaki, Kiyokazu Ichikawa