Patents by Inventor Shoji Yokoishi

Shoji Yokoishi 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: 9300008
    Abstract: A main object of the present invention is to provide a Li—La—Ti—O based solid electrolyte material having high Li ion conductivity in the crystal grain boundary. The present invention attains the object by providing solid electrolyte material represented by a general formula: Li3x(La(2/3?x)?aM1a) (Ti1?bM2b)O3, wherein “x” is 0<x<0.17; “a” is 0?a?0.5; “b” is 0?b?0.5; “M1” is at least one selected from the group consisting of Sr, Na, Nd, Pr, Sm, Gd, Dy, Y, Eu, Tb, and Ba; and “M2” is at least one selected from the group consisting of Mg, W, Mn, Al, Ge, Ru, Nb, Ta, Co, Zr, Hf, Fe, Cr, and Ga, and wherein the solid electrolyte material is a crystalline material, is in thin film form, and has a thickness of 250 nm to 850 nm.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: March 29, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Chihiro Yada, Shoji Yokoishi, Brian Elliott Hayden, Thierry Le Gall, Duncan Clifford Alan Smith, Christopher Edward Lee
  • Patent number: 9196924
    Abstract: A main object of the present invention is to provide a solid electrolyte material having excellent Li ion conductivity. To attain the object, the present invention provides a solid electrolyte material represented by a general formula: Lix(La2?aM1a)(Ti3?bM2b)O9+?, characterized in that “x” is 0<x?1; “a” is 0?a?2; “b” is 0?b?3; “?” is ?2???2; “M1” is at least one selected from the group consisting of Sr, Na, Nd, Pr, Sm, Gd, Dy, Y, Eu, Tb, and Ba; and “M2” is at least one selected from the group consisting of Mg, W, Mn, Al, Ge, Ru, Nb, Ta, Co, Zr, Hf, Fe, Cr, and Ga.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: November 24, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Chihiro Yada, Hiroshi Suyama, Shoji Yokoishi, Brian Elliott Hayden, Thierry Le Gall, Duncan Clifford Alan Smith, Christopher Edward Lee
  • Patent number: 8945779
    Abstract: A main object of the present invention is to provide a solid electrolyte material having excellent Li ion conductivity. To attain the object, the present invention provides a solid electrolyte material represented by a general formula: Lix(La1-aM1a)y(Ti1-bM2b)zO?, characterized in that “x”, “y”, and “z” satisfy relations of x+y+z=1, 0.652?x/(x+y+z)?0.753, and 0.167?y/(y+z)?0.232; “a” is 0?a?1; “b” is 0?b?1; “?” is 0.8???1.2; “M1” is at least one selected from the group consisting of Sr, Na, Nd, Pr, Sm, Gd, Dy, Y, Eu, Tb, and Ba; and “M2” is at least one selected from the group consisting of Mg, W, Mn, Al, Ge, Ru, Nb, Ta, Co, Zr, Hf, Fe, Cr, and Ga.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: February 3, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Chihiro Yada, Hiroshi Suyama, Shoji Yokoishi, Brian Elliott Hayden, Thierry Le Gall, Duncan Clifford Alan Smith, Christopher Edward Lee
  • Patent number: 8795902
    Abstract: A main object of the present invention is to provide a solid electrolyte material having excellent Li ion conductivity. To attain the object, the present invention provides a solid electrolyte material represented by a general formula: Lix(La1-aM1a)y(Ti1-bM2b)zO?, wherein “x”, “y”, and “z” satisfy relations of x+y+z=1, 0.850?x/(x+y+z)?0.930, and 0.087?y/(y+z)?0.115; “a” is 0?a?1; “b” is 0?b?1; “?” is 0.8???1.2; “M1” is at least one selected from the group consisting of Sr, Na, Nd, Pr, Sm, Gd, Dy, Y, Eu, Tb, and Ba; and “M2” is at least one selected from the group consisting of Mg, W, Mn, Al, Ge, Ru, Nb, Ta, Co, Zr, Hf, Fe, Cr, and Ga.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: August 5, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Chihiro Yada, Hiroshi Suyama, Shoji Yokoishi, Brian Elliot Hayden, Thierry Le Gall, Duncan Clifford Alan Smith, Christopher Edward Lee
  • Patent number: 8748044
    Abstract: The invention relates to a lithium lanthanum titanate composite solid electrolyte material containing silicon in which amorphous Si or an amorphous Si compound exist in a grain boundary between crystal grains, and a method of producing the same, and belongs to a field of a lithium ion battery. According to the invention, the amorphous Si or the amorphous Si compound exist in the grain boundary between the crystal grains of the lithium lanthanum titanate. The amorphous Si or the amorphous Si compound are introduced into the grain boundary by employing a wet chemical method. In the wet chemical method, the inexpensive organosilicon compound is used as an additive, and the organosilicon compound is added into the lithium lanthanum titanate solid electrolyte material.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: June 10, 2014
    Assignees: Toyota Jidosha Kabushiki Kaisha, Tsinghua University
    Inventors: Cewen Nan, Ao Mei, Yuchuan Feng, Lin Yuanhua, Yoshitaka Minamida, Shoji Yokoishi
  • Patent number: 8481204
    Abstract: A solid-state battery has a power generation element (5) having a cathode layer (1), a sulfide-based solid electrolyte membrane (2), an anode layer (3) that are stacked in this order; a battery case (6) in which the power generation element is disposed; and a flowable sealant (7) provided in the battery case and being non-reactive with the sulfide-based solid electrolyte membrane, the power generation element being soaked in the flowable sealant.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: July 9, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shigenori Hama, Shoji Yokoishi, Yukinari Kotani
  • Publication number: 20130071757
    Abstract: A main object of the present invention is to provide a solid electrolyte material having excellent Li ion conductivity. To attain the object, the present invention provides a solid electrolyte material represented by a general formula: Lix(La1-aM1a)y(Ti1-bM2b)zO?, characterized in that “x”, “y”, and “z” satisfy relations of x+y+z=1, 0.652?x/(x+y+z)?0.753, and 0.167?y/(y+z)?0.232; “a” is 0?a?1; “b” is 0?b?1; “?” is 0.8???1.2; “M1” is at least one selected from the group consisting of Sr, Na, Nd, Pr, Sm, Gd, Dy, Y, Eu, Tb, and Ba; and “M2” is at least one selected from the group consisting of Mg, W, Mn, Al, Ge, Ru, Nb, Ta, Co, Zr, Hf, Fe, Cr, and Ga.
    Type: Application
    Filed: April 13, 2010
    Publication date: March 21, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Chihiro Yada, Hiroshi Suyama, Shoji Yokoishi, Brian Elliott Hayden, Thierry Le Gall, Duncan Clifford Alan Smith, Christopher Edward Lee
  • Publication number: 20130071756
    Abstract: A main object of the present invention is to provide a solid electrolyte material having excellent Li ion conductivity. To attain the object, the present invention provides a solid electrolyte material represented by a general formula: Lix(La2-aM1a)(Ti3-bM2b)O9+?, characterized in that “x” is 0<x?1; “a” is 0?a?2; “b” is 0?b?3; “?” is ?2???2; “M1” is at least one selected from the group consisting of Sr, Na, Nd, Pr, Sm, Gd, Dy, Y, Eu, Tb, and Ba; and “M2” is at least one selected from the group consisting of Mg, W, Mn, Al, Ge, Ru, Nb, Ta, Co, Zr, Hf, Fe, Cr, and Ga.
    Type: Application
    Filed: April 13, 2010
    Publication date: March 21, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Chihiro Yada, Hiroshi Suyama, Shoji Yokoishi, Brian Elliott Hayden, Thierry Le Gall, Duncan Clifford Alan Smith, Christopher Edward Lee
  • Publication number: 20130022878
    Abstract: A main object of the present invention is to provide a solid electrolyte material having excellent Li ion conductivity. To attain the object, the present invention provides a solid electrolyte material represented by a general formula: Lix(La1-aM1a)y(Ti1-bM2b)zO?, wherein “x”, “y”, and “z” satisfy relations of x+y+z=1, 0.850?x/(x+y+z)?0.930, and 0.087?y/(y+z)?0.115; “a” is 0?a?1; “b” is 0?b?1; “67 ” is 0.8???1.2; “M1” is at least one selected from the group consisting of Sr, Na, Nd, Pr, Sm, Gd, Dy, Y, Eu, Tb, and Ba; and “M2” is at least one selected from the group consisting of Mg, W, Mn, Al, Ge, Ru, Nb, Ta, Co, Zr, Hf, Fe, Cr, and Ga.
    Type: Application
    Filed: April 13, 2010
    Publication date: January 24, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Chihiro Yada, Hiroshi Suyama, Shoji Yokoishi, Brian Elliot Hayden, Thierry Le Gall, Duncan Clifford Alan Smith, Christopher Edward Lee
  • Publication number: 20120237835
    Abstract: A main object of the present invention is to provide a Li-La-Ti-O based solid electrolyte material having high Li ion conductivity in the crystal grain boundary. The present invention attains the object by providing solid electrolyte material represented by a general formula: Li3x(La(2/3?x)?aM1a) (Ti1?bM2b)O3, wherein “x” is 0<x<0.17; “a” is 0?a?0.5; “b” is 0?b?0.5; “M1” is at least one selected from the group consisting of Sr, Na, Nd, Pr, Sm, Gd, Dy, Y, Eu, Tb, and Ba; and “M2” is at least one selected from the group consisting of Mg, W, Mn, Al, Ge, Ru, Nb, Ta, Co, Zr, Hf, Fe, Cr, and Ga, and wherein the solid electrolyte material is a crystalline material, is in thin film form, and has a thickness of 250 nm to 850 nm.
    Type: Application
    Filed: April 13, 2010
    Publication date: September 20, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Chihiro Yada, Shoji Yokoishi, Brian Elliot Hayden, Thierry Le Gall, Duncan Clifford Alan Smith, Christopher Edward Lee
  • Publication number: 20110059369
    Abstract: The invention relates to a lithium lanthanum titanate composite solid electrolyte material containing silicon in which amorphous Si or an amorphous Si compound exist in a grain boundary between crystal grains, and a method of producing the same, and belongs to a field of a lithium ion battery. According to the invention, the amorphous Si or the amorphous Si compound exist in the grain boundary between the crystal grains of the lithium lanthanum titanate. The amorphous Si or the amorphous Si compound are introduced into the grain boundary by employing a wet chemical method. In the wet chemical method, the inexpensive organosilicon compound is used as an additive, and the organosilicon compound is added into the lithium lanthanum titanate solid electrolyte material.
    Type: Application
    Filed: July 24, 2009
    Publication date: March 10, 2011
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, TSINGHUA UNIVERSITY
    Inventors: Cewen Nan, Ao Mei, Yuchuan Feng, Lin Yuanhua, Yoshitaka Minamida, Shoji Yokoishi
  • Patent number: 7722991
    Abstract: An anode material with lithium-alloying particles contained within a porous support matrix is provided. The porous support matrix preferably has a porosity of between 5 and 80% afforded by porosity channels and expansion accommodation pores, and is electrically conductive. More preferably the support matrix has a porosity of between 10 and 50%. The support matrix is made from an organic polymer, an inorganic ceramic or a hybrid mixture of organic polymer and inorganic ceramic. The organic polymer support matrix and can be made from a rod-coil polymer, a hyperbranched polymer, UV cross-linked polymer, heat cross-linked polymer or combination thereof. An inorganic ceramic support matrix can be made from at least one group IV-VI transition metal compound, with the compound being a nitride, carbide, oxide or combination thereof.
    Type: Grant
    Filed: August 9, 2006
    Date of Patent: May 25, 2010
    Assignees: Toyota Motor Corporation, Toyota Motor Engineering & Manufacturing North America, Inc., T/J Technologies, Inc.
    Inventors: Pu Zhang, Junqing Ma, Suresh Mani, Monique Richard, Shoji Yokoishi, Brian Glomski, Liya Wang, Shih-Chieh Yin, Kimber L. Stamm, Chris Silkowski, John Miller, Wen Li
  • Publication number: 20080038638
    Abstract: An anode material with lithium-alloying particles contained within a porous support matrix is provided. The porous support matrix preferably has a porosity of between 5 and 80% afforded by porosity channels and expansion accommodation pores, and is electrically conductive. More preferably the support matrix has a porosity of between 10 and 50%. The support matrix is made from an organic polymer, an inorganic ceramic or a hybrid mixture of organic polymer and inorganic ceramic The organic polymer support matrix and can be made from a rod-coil polymer, a hyperbranched polymer, UV cross-linked polymer, heat cross-linked polymer or combination thereof. An inorganic ceramic support matrix can be made from at least one group IV-VI transition metal compound, with the compound being a nitride, carbide, oxide or combination thereof.
    Type: Application
    Filed: August 9, 2006
    Publication date: February 14, 2008
    Applicant: Toyota Motor Corporation
    Inventors: Pu Zhang, Junqing Ma, Suresh Mani, Monique Richard, Shoji Yokoishi, Brian Glomski, Liya Wang, Shih-Chieh Yin, Kimber L. Stamm, Chris Silkowski, John Miller, Wen Li
  • Publication number: 20080020284
    Abstract: The present invention relates to polymeric binders of formula: [(—CH2CF2—)x?(—CF2CF2—)y?[—CH2CH(R)—]z?]m wherein: x?+y?+z?=1, only one x?, y? or z? could be simultaneously equal to zero; R is an alkyl radical CnH2n+1— with 0?n?8, 10?m?106.
    Type: Application
    Filed: April 30, 2004
    Publication date: January 24, 2008
    Applicants: UNIVERSITE DE MONTREAL, CENTRE NATIONAL DE LA RECHERCE SCIENTIFIQUE
    Inventors: Christophe Michot, Gerald Perron, Junzo Ukai, Wen Li, Keiichi Kohama, Yutaka Oyama, Shoji Yokoishi
  • Patent number: 5742474
    Abstract: An electric double layer capacitor which is usable at a high voltage without causing an irreversible current. Both a polarized positive electrode 14 and a polarized negative electrode 16 are made of the same constituents. However, a ratio of an amount of constituents of the polarized positive electrode 14 differs from that of the polarized negative electrode 16. A ratio of a capacitance of the polarized positive electrode to a capacitance of the polarized negative electrode is controlled such that the polarized positive electrode and the polarized negative electrode simultaneously reach respective potentials where the irreversible current is caused. According to this invention there is an advantage that it is possible to increase a voltage applied to the electric double layer capacitor.
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: April 21, 1998
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tatsuhiko Shimizu, Hiroyuki Kimoto, Shoji Yokoishi