Patents by Inventor Hiroki Inagaki

Hiroki Inagaki 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).

  • Active material, nonaqueous electrolyte battery, and battery pack
    Patent number: 9812704
    Abstract: According to one embodiment, an active material is provided. This active material includes a mixed phase of a phase of titanium-including composite oxide and a phase of titanium oxide. The titanium-including composite oxide has a crystal structure belonging to a space group Cmca or a space group Fmmm.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: November 7, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiroki Inagaki, Norio Takami
  • Titanium-niobium composite oxide-based electrode active material and lithium secondary battery using the same
    Patent number: 9806339
    Abstract: An electrode active material comprising in major proportions a monoclinic titanium-niobium composite oxide represented by the formula TiNbxO(2+5x/2), wherein X is from 1.90 or more to less than 2.00.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: October 31, 2017
    Assignees: TITAN KOGYO KABUSHIKI KAISHA, KABUSHIKI KAISHA TOSHIBA
    Inventors: Kiyoshi Nakahara, Toshimasa Seki, Hidenori Ishioka, Wataru Mino, Yasuhiro Harada, Norio Takami, Hiroki Inagaki
  • Nonaqueous electrolyte battery and battery pack
    Patent number: 9806340
    Abstract: According to one embodiment, a nonaqueous electrolyte battery including a positive electrode and a negative electrode is provided. The positive electrode includes LiNixM1-xO2 wherein M is a metal element including Mn, and x is within a range of 0.5?x?1. The negative electrode includes graphitized material particles and a layer. The graphitized material particles have an interplanar spacing of (002), according to an X-ray diffraction method, of 0.337 nm or less. The layer includes a titanium-containing oxide. The layer covers at least a part of a surface of the graphitized material particles.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: October 31, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Norio Takami, Wen Zhang, Hiroki Inagaki
  • Nonaqueous electrolyte battery, battery pack and vehicle
    Patent number: 9786909
    Abstract: A nonaqueous electrolyte battery includes a positive electrode, a negative electrode and a nonaqueous electrolyte. The negative electrode contains a lithium compound and a negative electrode current collector supporting the lithium compound. A log differential intrusion curve obtained when a pore size diameter of the negative electrode is measured by mercury porosimetry has a peak in a pore size diameter range of 0.03 to 0.2 ?m and attenuates with a decrease in pore size diameter from an apex of the peak. A specific surface area (excluding a weight of the negative electrode current collector) of pores of the negative electrode found by mercury porosimetry is 6 to 100 m2/g. A ratio of a volume of pores having a pore size diameter of 0.05 ?m or less to a total pore volume is 20% or more.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: October 10, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hidesato Saruwatari, Hideaki Morishima, Hiroki Inagaki, Norio Takami
  • NONAQUEOUS ELECTROLYTE BATTERY AND BATTERY PACK
    Publication number: 20170279118
    Abstract: According to one embodiment, a nonaqueous electrolyte battery including a positive electrode and a negative electrode is provided. The positive electrode includes LiNixM1-xO2 wherein M is a metal element including Mn, and x is within a range of 0.5?x?1. The negative electrode includes graphitized material particles and a layer. The graphitized material particles have an interplanar spacing of (002), according to an X-ray diffraction method, of 0.337 nm or less. The layer includes a titanium-containing oxide. The layer covers at least a part of a surface of the graphitized material particles.
    Type: Application
    Filed: June 14, 2017
    Publication date: September 28, 2017
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Norio TAKAMI, Wen ZHANG, Hiroki INAGAKI
  • Active substance
    Patent number: 9774032
    Abstract: According to one embodiment, there is provided an active substance. The active substance includes secondary particles and a carbon material phase formed on at least a part of a surface of each of the secondary particles. Each of the secondary particles is constructed by aggregated primary particles of an active material. The primary particles of the active material includes a niobium composite oxide represented by LixM(1?y)NbyNb2O(7+?), wherein M is at least one selected from the group consisting of Ti and Zr, and x, y, and ? respectively satisfy 0?x?6, 0?y?1, and ?1???1. The secondary particles have a compression fracture strength of 10 MPa or more.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: September 26, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiroki Inagaki, Yasuhiro Harada, Yorikazu Yoshida, Kazuki Ise, Norio Takami
  • SECONDARY BATTERY, BATTERY PACK, AND VEHICLE
    Publication number: 20170271682
    Abstract: According to one embodiment, a secondary battery is provided. The secondary battery includes a positive electrode, a negative electrode, and an electrolyte solution. The negative electrode includes a negative electrode current collector including elemental zinc, and a negative electrode layer disposed on the negative electrode current collector. The negative electrode layer includes a negative electrode active material including at least one compound selected from the group consisting of an oxide of titanium, a lithium-titanium oxide, and a lithium-titanium composite oxide. The electrolyte solution includes an aqueous solvent and an electrolyte.
    Type: Application
    Filed: March 13, 2017
    Publication date: September 21, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shinsuke MATSUNO, Norio TAKAMI, Yasunobu YAMASHITA, Hiroki INAGAKI
  • SECONDARY BATTERY, BATTERY PACK, AND VEHICLE
    Publication number: 20170271717
    Abstract: According to one embodiment, a secondary battery including a positive electrode, a negative electrode, and an electrolyte solution is provided. The negative electrode includes a negative electrode current collector, and a negative electrode mixed-materials layer disposed on the negative electrode current collector. The negative electrode current collector has a carbon-including coating layer on at least a part of the surface thereof. The negative electrode mixed-materials layer includes a negative electrode active material including a titanium-including oxide. The electrolyte solution includes an aqueous solvent and an electrolyte.
    Type: Application
    Filed: March 13, 2017
    Publication date: September 21, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasunobu YAMASHITA, Kazuki ISE, Shinsuke MATSUNO, Norio TAKAMI, Hiroki INAGAKI
  • ACTIVE MATERIAL FOR BATTERY, NONAQUEOUS ELECTROLYTE BATTERY, BATTERY PACK, AND VEHICLE
    Publication number: 20170237068
    Abstract: According to one embodiment, there is provided an active material for a battery. The active material includes secondary particle which contains primary particles of a monoclinic ?-type titanium composite oxide having an average primary particle diameter of 1 nm to 10 ?m. The secondary particle has an average secondary particle diameter of 1 ?m to 100 ?m. The secondary particle has compression fracture strength of 20 MPa or more.
    Type: Application
    Filed: May 2, 2017
    Publication date: August 17, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiroki INAGAKI, Wen ZHANG, Yasuhiro HARADA, Keigo HOSHINA, Yuki OTANI, Norio TAKAMI
  • Nonaqueous electrolyte battery, battery pack and vehicle
    Patent number: 9728809
    Abstract: A nonaqueous electrolyte battery includes a positive electrode, a negative electrode and a nonaqueous electrolyte. The negative electrode contains a titanium-containing oxide. The nonaqueous electrolyte contains a compound having a functional group represented by the formula (1) below and a sultone having an unsaturated hydrocarbon group. [Chem.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: August 8, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiroki Inagaki, Yumi Fujita, Norio Takami
  • Negative electrode active material containing a titanium oxide compound having a crystal structure of monoclinic system titanium dioxide
    Patent number: 9728778
    Abstract: A negative electrode active material according to one embodiment includes a titanium oxide compound having a crystal structure of monoclinic system titanium dioxide. The titanium oxide compound is modified by at least one kind of ion selected from the group consisting of an alkali metal cation, an alkali earth metal cation, a transition metal cation, a sulfide ion, a sulfuric acid ion and a chloride ion.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: August 8, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasuhiro Harada, Norio Takami, Hiroki Inagaki, Keigo Hoshina, Yuki Otani
  • SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK AND VEHICLE
    Publication number: 20170222272
    Abstract: According to one embodiment, a secondary battery including a positive electrode, a negative electrode, and an electrolyte is provided. The negative electrode includes titanium-containing oxide and at least one kind of element selected from the group consisting of B, P, Al, La, Zr, Ge, Zn, Sn, Ga, Pb, In, Bi, and Tl. The electrolyte includes lithium ions and a solvent containing water.
    Type: Application
    Filed: March 13, 2017
    Publication date: August 3, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Norio TAKAMI, Yasunobu YAMASHITA, Shinsuke MATSUNO, Yasuhiro HARADA, Hiroki INAGAKI
  • Negative electrode
    Patent number: 9722239
    Abstract: According to one embodiment, there is provided a negative electrode. The negative electrode includes a negative electrode layer. The negative electrode layer contains a titanium composite oxide and a carboxymethyl-cellulose compound. The carboxymethyl-cellulose has a degree of etherification of 1 or more and 2 or less. The negative electrode layer has a density of 2.2 g/cm3 or more.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: August 1, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Mitsuru Ishibashi, Takuya Iwasaki, Kazuhiro Yasuda, Yorikazu Yoshida, Hiroki Inagaki, Norio Takami
  • Nonaqueous electrolyte battery and battery pack
    Patent number: 9711790
    Abstract: According to one embodiment, a nonaqueous electrolyte battery including a positive electrode and a negative electrode is provided. The positive electrode includes LiNixM1?xO2 wherein M is a metal element including Mn, and x is within a range of 0.5?x?1. The negative electrode includes graphitized material particles and a layer. The graphitized material particles have an interplanar spacing of (002), according to an X-ray diffraction method, of 0.337 nm or less. The layer includes a titanium-containing oxide. The layer covers at least a part of a surface of the graphitized material particles.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: July 18, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Norio Takami, Wen Zhang, Hiroki Inagaki
  • Electrode for solid electrolyte secondary battery, solid electrolyte secondary battery, and battery pack
    Patent number: 9705155
    Abstract: According to one embodiment, a solid electrolyte secondary battery includes a positive electrode, a negative electrode, and a solid electrolyte layer, wherein at least one selected from the positive electrode and the negative electrode comprises active material particles, first solid electrolyte particles located the vicinity of a surface of the active material particles, and second solid electrolyte particles located a gap between the active material particles. A particle size ratio of a second solid electrolyte particle size D2 to a first solid electrolyte particle size D1 (D2/D1) satisfies the relation of 3<D2/D1<50, where D1 and D2 denote a particle size of the first and second solid electrolyte particles, respectively.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: July 11, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Keigo Hoshina, Hiroki Inagaki, Norio Takami
  • Lithium-ion conducting oxide, solid electrolyte secondary battery and battery pack
    Patent number: 9698446
    Abstract: According to one embodiment, a solid electrolyte secondary battery includes a positive electrode, a negative electrode and a solid electrolyte layer. The solid electrolyte layer includes a lithium-ion conducting oxide containing at least one element selected from the group consisting of B, N, F and S, wherein a total content of the element in the lithium-ion conducting oxide is 0.05% by mass or more and 1% by mass or less.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: July 4, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Keigo Hoshina, Hiroki Inagaki, Norio Takami
  • Active material
    Patent number: 9698422
    Abstract: According to one embodiment, an active material is provided. The active material includes orthorhombic system oxide represented by the following formula: LixM1M22O6. In this formula, 0?x?5, M1 is at least one selected from the group consisting of Fe and Mn, and M2 is at least one selected from the group consisting of Nb, Ta and V.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: July 4, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiroki Inagaki, Wen Zhang, Yasuhiro Harada, Norio Takami
  • Nonaqueous electrolyte battery
    Patent number: 9698415
    Abstract: A nonaqueous electrolyte battery includes a positive electrode containing an active material, a negative electrode, and a nonaqueous electrolyte, the negative electrode including a current collector and a negative electrode active material supported by the current collector, the negative electrode active material having a Li insertion potential not lower than 0.2V (vs. Li/Li+) and an average primary particle diameter not larger than 1 ?m, and a specific surface area of the negative electrode, excluding a weight of the current collector, as determined by the BET method falls within a range of 3 to 50 m2/g.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: July 4, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Norio Takami, Hiroki Inagaki
  • Electrode for battery and production method thereof, nonaqueous electrolyte battery, battery pack, and active material
    Patent number: 9698411
    Abstract: According to one embodiment, there is provided an electrode for battery which includes a current collector and an active material layer provided on the current collector. The active material layer contains particles of a lithium titanate compound having a spinel structure and a basic polymer. Here, the basic polymer is coating at least a part of the surface of the particles of the lithium titanate compound.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: July 4, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Dai Yamamoto, Takuya Iwasaki, Yasuhiro Harada, Hiroki Inagaki, Hideki Satake
  • LITHIUM-ION CONDUCTIVE SULFIDE, SOLID ELECTROLYTE SECONDARY BATTERY AND BATTERY PACK
    Publication number: 20170179523
    Abstract: According to one embodiment, a solid electrolyte secondary battery includes a positive electrode containing an active material, a negative electrode containing an active material, and a solid electrolyte layer. The solid electrolyte layer includes a lithium-ion conductive sulfide containing at least one element selected from a group consisting of Al, Si, Fe, Ni, and Zr, the total content of the element in the lithium-ion conductive sulfide is 0.03% by mass or more and 0.3% by mass or less.
    Type: Application
    Filed: March 2, 2017
    Publication date: June 22, 2017
    Inventors: Keigo Hoshina, Hiroki Inagaki, Norio Takami