Patents by Inventor Shinya Omura

Shinya Omura 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: 10886558
    Abstract: Provided is a battery module that allows suppressing impairment of battery performance, through suitable control of a restraining pressure that is exerted in the stacking direction of a stack, also in a case where unit cells expand/shrink when charged/discharged. The battery module is provided with a stack in which a plurality of unit cells is stacked, and with a pressure regulation member, which is disposed at least at one site from among a gap between the stacked unit cells, and a first end and a second end in the stacking direction, and which regulates a restraining pressure exerted in the stacking direction of the stack. The pressure regulation member is provided with a liquid holding section and a liquid storage section. The liquid holding section is provided with a liquid holding body capable of holding a liquid. The liquid storage section has a space capable of storing the liquid.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: January 5, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takuma Sakamoto, Satomi Yamamoto, Koichi Tanimoto, Shinya Omura
  • Publication number: 20200295340
    Abstract: A sealed battery disclosed here comprises an electrode body comprising a positive electrode collector and a negative electrode collector, collector tabs for external connection bonded to the corresponding collector, and a case. Both of bonded portions of the positive and the negative electrode collectors and the positive and negative electrode collector tabs are in the case. At least one of the positive and the negative electrode collectors and the collector tab bonded to the corresponding electrode are made of metals different from each other. An intermetallic compound present at a bonded interface between the collector and the connector tab and is made of the metals different from each other has a maximum diameter of smaller than 1 ?m under a transmission electron microscope observation.
    Type: Application
    Filed: February 28, 2020
    Publication date: September 17, 2020
    Inventors: Shinya OMURA, Masashi KATO, Mizuho MATSUMOTO
  • Publication number: 20190229364
    Abstract: Provided is a battery module that allows suppressing impairment of battery performance, through suitable control of a restraining pressure that is exerted in the stacking direction of a stack, also in a case where unit cells expand/shrink when charged/discharged. The battery module is provided with a stack in which a plurality of unit cells is stacked, and with a pressure regulation member, which is disposed at least at one site from among a gap between the stacked unit cells, and a first end and a second end in the stacking direction, and which regulates a restraining pressure exerted in the stacking direction of the stack. The pressure regulation member is provided with a liquid holding section and a liquid storage section. The liquid holding section is provided with a liquid holding body capable of holding a liquid. The liquid storage section has a space capable of storing the liquid.
    Type: Application
    Filed: January 17, 2019
    Publication date: July 25, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takuma SAKAMOTO, Satomi YAMAMOTO, Koichi TANIMOTO, Shinya OMURA
  • Patent number: 10199145
    Abstract: Provided is a rare-earth magnet containing no heavy rare-earth metals such as Dy or Tb in a grain boundary phase, has a modifying alloy for increasing coercivity (in particular, coercivity under a high-temperature atmosphere) infiltrated thereinto at lower temperature than in the conventional rare-earth magnets, has high coercivity, and has relatively high magnetizability, and a production method therefor. The rare-earth magnet RM includes a RE-Fe—B-based main phase MP with a nanocrystalline structure (where RE is at least one of Nd or Pr) and a grain boundary phase BP around the main phase, the grain boundary phase containing a RE-X alloy (where X is a metallic element other than heavy rare-earth elements). Crystal grains of the main phase MP are oriented along the anisotropy axis, and each crystal grain of the main phase, when viewed from a direction perpendicular to the anisotropy axis, has a plane that is quadrilateral in shape or has a close shape thereto.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: February 5, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tetsuya Shoji, Akira Manabe, Noritaka Miyamoto, Motoki Hiraoka, Shinya Omura, Daisuke Ichigozaki, Shinya Nagashima
  • Patent number: 9281105
    Abstract: A permanent magnet has a grain structure that includes a main phase and a grain boundary phase that is primarily composed of a first metal. A second metal that enhances the coercivity of the permanent magnet and a third metal that has a lower standard free energy of oxide formation than the first metal and the second metal are diffused in the permanent magnet, and the third metal is present in the form of an oxide in the grain boundary phase.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: March 8, 2016
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Noritaka Miyamoto, Shinya Omura
  • Patent number: 9257227
    Abstract: Provided is a manufacturing method of a rare-earth magnet with high coercive force, including a first step of pressing-forming powder as a rare-earth magnet material to form a compact S, the powder including a RE-Fe—B main phase MP (RE: at least one type of Nd and Pr) and a RE-X alloy (X: metal element) grain boundary phase surrounding the main phase; and second step of bringing a modifier alloy M into contact with the compact S or a rare-earth magnet precursor C obtained by hot deformation processing of the compact S, followed by heat treatment to penetrant diffuse melt of the modifier alloy M into the compact S or the rare-earth magnet precursor C to manufacture the rare-earth magnet RM, the modifier alloy including a RE-Y (Y: metal element and not including a heavy rare-earth element) alloy having a eutectic or a RE-rich hyper-eutectic composition.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: February 9, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazuaki Haga, Noritaka Miyamoto, Tetsuya Shoji, Noritsugu Sakuma, Shinya Omura, Motoki Hiraoka
  • Patent number: 9230733
    Abstract: Provided is a manufacturing method of a rare-earth magnet with high coercive force, including a first step of pressing-forming powder as a rare-earth magnet material to form a compact S, the powder including a RE-Fe—B main phase MP (RE: at least one type of Nd and Pr) and a RE-X alloy (X: metal element) grain boundary phase surrounding the main phase; and second step of bringing a modifier alloy M into contact with the compact S or a rare-earth magnet precursor C obtained by hot deformation processing of the compact S, followed by heat treatment to penetrant diffuse melt of the modifier alloy M into the compact S or the rare-earth magnet precursor C to manufacture the rare-earth magnet RM, the modifier alloy including a RE-Y (Y: metal element and not including a heavy rare-earth element) alloy having a eutectic or a RE-rich hyper-eutectic composition.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: January 5, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazuaki Haga, Noritaka Miyamoto, Tetsuya Shoji, Noritsugu Sakuma, Shinya Omura, Motoki Hiraoka
  • Publication number: 20150302986
    Abstract: A permanent magnet has a grain structure that includes a main phase and a grain boundary phase that is primarily composed of a first metal. A second metal that enhances the coercivity of the permanent magnet and a third metal that has a lower standard free energy of oxide formation than the first metal and the second metal are diffused in the permanent magnet, and the third metal is present in the form of an oxide in the grain boundary phase.
    Type: Application
    Filed: June 30, 2015
    Publication date: October 22, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Noritaka Miyamoto, Shinya Omura
  • Publication number: 20140308441
    Abstract: A method of manufacturing rare-earth magnets includes, a first step of producing a compact C by subjecting a sintered body S, which is formed of a RE—Fe—B main phase MP having a nanocrystalline structure (where RE is at least one of neodymium and praseodymium) and a grain boundary phase BP of an RE—X alloy (where X is a metal element) located around the main phase, to hot plastic processing that imparts anisotropy; and a second step of producing a rare-earth magnet RM by melting a RE—Y—Z alloy which increases the coercive force of the compact C (where Y is a transition metal element, and Z is a heavy rare-earth element), together with the grain boundary phase BP, and liquid-phase infiltrating the RE—Y—Z alloy melt from a surface of the compact C.
    Type: Application
    Filed: November 7, 2012
    Publication date: October 16, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tetsuya Shoji, Shinya Omura, Motoki Hiraoka
  • Patent number: 8846136
    Abstract: PROBLEM: To provide a production method of an anisotropic rare earth magnet capable of being enhanced in coercivity without adding a large amount of a rare metal such as Dy and Tb. MEANS FOR RESOLUTION: A production method of a rare earth magnet, comprising a step of bringing a compact obtained by applying hot working to impart anisotropy to a sintered body having a rare earth magnet composition into contact with a low-melting-point alloy melt containing a rare earth element.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: September 30, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tetsuya Shoji, Noritaka Miyamoto, Shinya Omura, Daisuke Ichigozaki, Takeshi Yamamoto
  • Publication number: 20140242267
    Abstract: Provided is a rare-earth magnet containing no heavy rare-earth metals such as Dy or Tb in a grain boundary phase, has a modifying alloy for increasing coercivity (in particular, coercivity under a high-temperature atmosphere) infiltrated thereinto at lower temperature than in the conventional rare-earth magnets, has high coercivity, and has relatively high magnetizability, and a production method therefor. The rare-earth magnet RM includes a RE-Fe—B-based main phase MP with a nanocrystalline structure (where RE is at least one of Nd or Pr) and a grain boundary phase BP around the main phase, the grain boundary phase containing a RE-X alloy (where X is a metallic element other than heavy rare-earth elements). Crystal grains of the main phase MP are oriented along the anisotropy axis, and each crystal grain of the main phase, when viewed from a direction perpendicular to the anisotropy axis, has a plane that is quadrilateral in shape or has a close shape thereto.
    Type: Application
    Filed: November 12, 2012
    Publication date: August 28, 2014
    Inventors: Tetsuya Shoji, Akira Manabe, Noritaka Miyamoto, Motoki Hiraoka, Shinya Omura, Daisuke Ichigozaki, Shinya Nagashima
  • Publication number: 20130323111
    Abstract: The present invention provides a method of production of a rare earth magnet which achieves high magnetization by hot working and at the same time secures high coercivity. A method of production of the present invention is a method for producing an R-T-B-based rare earth magnet comprising: molding a powder of an R-T-B-based rare earth alloy (R: rare earth element, T: Fe or Fe part of which is substituted by Co) to form a bulk; then hot working the bulk; and before the molding, mixing with the powder of an R-T-B-based rare earth alloy either a metal which forms a liquid phase in copresence with R at a temperature lower than the hot working temperature, or an alloy which forms a liquid phase at a temperature lower than the hot working temperature.
    Type: Application
    Filed: February 21, 2011
    Publication date: December 5, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Noritaka Miyamoto, Tetsuya Shoji, Shinya Omura, Daisuke Ichigozaki, Akira Manabe
  • Publication number: 20130195710
    Abstract: Provided is a manufacturing method of a rare-earth magnet capable of penetrant-diffusing a modifier alloy to increase a coercive force (especially a coercive force under a high-temperature atmosphere) at a temperature lower than the conventional method for manufacturing a rare-earth magnet without using heavy rare-earth metals such as Dy and Tb, and accordingly capable of manufacturing a high coercivity rare-earth magnet at the lowest cost possible.
    Type: Application
    Filed: January 25, 2013
    Publication date: August 1, 2013
    Inventors: Kazuaki HAGA, Noritaka MIYAMOTO, Tetsuya SHOJI, Noritsugu SAKUMA, Shinya OMURA, Motoki HIRAOKA
  • Publication number: 20130135069
    Abstract: A permanent magnet has a grain structure that includes a main phase and a grain boundary phase that is primarily composed of a first metal. A second metal that enhances the coercivity of the permanent magnet and a third metal that has a lower standard free energy of oxide formation than the first metal and the second metal are diffused in the permanent magnet, and the third metal is present in the form of an oxide in the grain boundary phase.
    Type: Application
    Filed: July 13, 2011
    Publication date: May 30, 2013
    Inventors: Noritaka Miyamoto, Shinya Omura
  • Publication number: 20130078369
    Abstract: PROBLEM: To provide a production method of an anisotropic rare earth magnet capable of being enhanced in coercivity without adding a large amount of a rare metal such as Dy and Tb. MEANS FOR RESOLUTION: A production method of a rare earth magnet, comprising a step of bringing a compact obtained by applying hot working to impart anisotropy to a sintered body having a rare earth magnet composition into contact with a low-melting-point alloy melt containing a rare earth element.
    Type: Application
    Filed: September 13, 2011
    Publication date: March 28, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tetsuya Shoji, Noritaka Miyamoto, Shinya Omura, Daisuke Ichigozaki, Takeshi Yamamoto
  • Patent number: 8038761
    Abstract: There is provided an iron-based sintered material resistant to the metal fatigue developing from the voids therein functioning as the initial points and improved in the strength and machinability thereof. An iron-based sintered material, including a mixed structure of martensite, bainite, and pearlite and multiple voids formed in the mixed structure, wherein the ratio of martensite and bainite in the mixed structure is 70% or more; the ratio of martensite and/or bainite in the mixed structure forming the void surface is 90% or more; and the density of the iron-based sintered material is 7.4 g/cm3 or more.
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: October 18, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hitoshi Tanino, Kimihiko Ando, Shinya Omura, Toshitake Miyake, Mikio Kondoh, Nobuhiko Matsumoto
  • Publication number: 20080233421
    Abstract: There is provided an iron-based sintered material resistant to the metal fatigue developing from the voids therein functioning as the initial points and improved in the strength and machinability thereof. An iron-based sintered material, including a mixed structure of martensite, bainite, and pearlite and multiple voids formed in the mixed structure, wherein the ratio of martensite and bainite in the mixed structure is 70% or more; the ratio of martensite and/or bainite in the mixed structure forming the void surface is 90% or more; and the density of the iron-based sintered material is 7.4 g/cm3 or more.
    Type: Application
    Filed: March 21, 2008
    Publication date: September 25, 2008
    Inventors: Hitoshi TANINO, Kimihiko ANDO, Shinya OMURA, Toshitake MIYAKE, Mikio KONDOH, Nobuhiko MATSUMOTO