Patents by Inventor Akira Kano

Akira Kano 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: 11081698
    Abstract: A cathode active material for magnesium secondary batteries includes a material containing magnesium, boron, and carbon. The material has a layered structure.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: August 3, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Go Tei, Toshiro Kume, Akira Kano
  • Patent number: 11031584
    Abstract: A lithium secondary battery includes: a positive electrode; a negative electrode; a separator disposed between the positive electrode and the negative electrode; and a nonaqueous electrolyte solution filled between the positive electrode and the negative electrode. The negative electrode includes: an electrically conductive layer having a surface; and lithium metal pieces arranged spaced from each other on the surface of the electrically conductive layer. There is no lithium metal on an imaginary line extending from a first end to a second end opposite to the first end of the surface of the electrically conductive layer and traversing a space between the lithium metal pieces.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: June 8, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Tooru Matsui, Junichi Sakamoto, Kazuko Asano, Akira Kano, Kensuke Nakura
  • Patent number: 11024874
    Abstract: A lithium secondary battery includes a positive electrode, a negative electrode, a separator, and a nonaqueous electrolyte having lithium-ion conductivity. The positive electrode contains a positive electrode active material containing lithium. The negative electrode faces the positive electrode. The separator is disposed between the positive and negative electrodes. The negative electrode includes a negative electrode current collector. The negative electrode current collector includes a layer and protrusions. The layer has a first surface on which lithium metal is deposited during charge. The protrusions protrude from the first surface. At least one of the protrusions includes a conductive material and an insulative material.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: June 1, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Ryohei Miyamae, Akira Kano, Kensuke Nakura
  • Patent number: 11018227
    Abstract: A semiconductor storage device comprises a plurality of memory cells arranged in a matrix. Each of the memory cells includes: a semiconductor storage element including a silicon carbide substrate and a silicon carbide film on a first surface of the silicon carbide substrate; a lower electrode on a second surface facing away from the first surface of the silicon carbide substrate; and an upper electrode on at least part of a surface of the silicon carbide film, the surface facing away from another surface of the silicon carbide film in contact with the silicon carbide substrate. Each memory cell includes at least one basal plane dislocation formed at at least part of the semiconductor storage element.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: May 25, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Akihiro Goryu, Akira Kano, Kenji Hirohata
  • Patent number: 11018332
    Abstract: A lithium secondary battery includes: a positive electrode; a negative electrode including a negative electrode collector having a surface, on which a lithium metal is deposited during charge; a separator disposed between the positive electrode and the negative electrode; and a nonaqueous electrolyte solution filled between the positive electrode and the negative electrode. The negative electrode collector includes projection portions projecting from the surface toward the separator. There is no projection portion on an imaginary line extending from a first end to a second end opposite to the first end of the surface of the negative electrode collector and traversing a space between the projection portions.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: May 25, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Tooru Matsui, Junichi Sakamoto, Kazuko Asano, Akira Kano, Kensuke Nakura
  • Patent number: 10978692
    Abstract: A lithium secondary battery includes an electrode group and a nonaqueous electrolyte having lithium ion conductivity. A negative electrode includes a negative electrode current collector. The negative electrode current collector has a first surface facing an outward direction of winding of the electrode group and a second surface facing an inward direction of the winding of the electrode group. Lithium metal is deposited on the first surface and the second surface by charge. The negative electrode further includes first protrusions protruding from the first surface and second protrusions protruding from the second surface. A ratio A1X/A1 is less than a ratio A2X/A2. A1X is a sum of projected areas of the first protrusions on the first surface. A1 is an area of the first surface. A2X is a sum of projected areas of the second protrusions on the second surface. A2 is an area of the second surface.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: April 13, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Akira Kano, Ryohei Miyamae, Kiyohiro Isii, Kensuke Nakura
  • Patent number: 10923731
    Abstract: A lithium secondary battery comprises an electrode group and a nonaqueous electrolyte having lithium-ion conductivity. A negative electrode current collector has a first surface facing outward of winding of the electrode group and a second surface facing inward of the winding of the electrode group. At least the first surface or the second surface includes a first region and a second region that is closer to an innermost circumference of the winding of the electrode group than the first region. Protrusions include outer-circumference-side protrusions disposed on the first region and inner-circumference-side protrusions disposed on the second region. A first average height of the outer-circumference-side protrusions is smaller than a second average height of the inner-circumference-side protrusions.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: February 16, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Akira Kano, Ryohei Miyamae, Kiyohiro Isii, Kensuke Nakura
  • Patent number: 10923711
    Abstract: A lithium secondary battery comprises an electrode group and a nonaqueous electrolyte having lithium-ion conductivity. A negative electrode current collector has a first surface facing outward of winding of the electrode group and a second surface facing inward of the winding of the electrode group. At least the first surface or the second surface includes a first region and a second region that is closer to an innermost circumference of the winding of the electrode group than the first region. Protrusions include outer-circumference-side protrusions disposed on the first region and inner-circumference-side protrusions disposed on the second region. In at least the first surface or the second surface, a first area rate is smaller than a second area rate.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: February 16, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Akira Kano, Ryohei Miyamae, Kiyohiro Isii, Kensuke Nakura
  • Patent number: 10916810
    Abstract: A lithium secondary battery comprises an electrode group and a nonaqueous electrolyte having lithium-ion conductivity. A negative electrode current collector has a first surface facing outward of winding of the electrode group and a second surface facing inward of the winding of the electrode group. At least the first surface or the second surface includes a first region and a second region that is closer to an innermost circumference of the winding of the electrode group than the first region. Protrusions include outer-circumference-side protrusions disposed on the first region and inner-circumference-side protrusions disposed on the second region. A first average height of the outer-circumference-side protrusions is larger than a second average height of the inner-circumference-side protrusions.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: February 9, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Akira Kano, Kiyohiro Isii, Ryohei Miyamae, Kensuke Nakura
  • Patent number: 10916809
    Abstract: A lithium secondary battery includes a wound electrode group and a lithium-ion conductive nonaqueous electrolyte. The wound electrode group includes a positive electrode, a negative electrode, and a separator between the positive electrode and the negative electrode. The negative electrode includes a negative electrode current collector. The negative electrode current collector includes: a layer having a first surface facing outward of the winding of the electrode group and a second surface facing inward of the winding of the electrode group; first protrusions protruding from the first surface; and second protrusions protruding from the second surface. Lithium metal is deposited on the first surface and the second surface by charging. A second average height of the second protrusions is higher than a first average height of the first protrusions.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: February 9, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Akira Kano, Ryohei Miyamae, Kiyohiro Isii, Junichi Sakamoto
  • Patent number: 10861941
    Abstract: According to an embodiment, in a semiconductor device, a total value of a change amount of chemical potential of the semiconductor device with respect to a expansion direction of a stacking fault and the stacking fault energy of the stacking fault is zero or more.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: December 8, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Akira Kano, Akihiro Goryu, Kenji Hirohata
  • Patent number: 10840538
    Abstract: A lithium metal secondary battery includes a positive electrode, a negative electrode, a solid electrolyte, and a soft electrolyte. The negative electrode includes a negative electrode current collector having at least one hole, in which lithium metal is deposited in a charged state. The solid electrolyte is disposed on the surface, which face negative electrode current collector, of the positive electrode. The soft electrolyte fills the space between the negative electrode current collector and solid electrolyte and entering into the at least one hole. The solid and soft electrolytes have lithium ion conductivity.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: November 17, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Junichi Sakamoto, Akira Kano, Tooru Matsui, Kazuko Asano, Kiyoshi Kanamura
  • Patent number: 10811685
    Abstract: A negative electrode active material contains a lithium-containing transition metal oxynitride having a crystal structure belonging to the space group Fm3m. An electrochemical device includes a negative electrode which contains a negative electrode active material containing a lithium-containing transition metal oxynitride having a crystal structure belonging to the space group Fm3m; a positive electrode; and an electrolyte.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: October 20, 2020
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Akira Kano, Kazuko Asano, Tsuyoshi Ichinose
  • Patent number: 10804572
    Abstract: A lithium secondary battery includes a wound electrode group and a lithium-ion conductive nonaqueous electrolyte. The wound electrode group includes a positive electrode, a negative electrode, and a separator between the positive electrode and the negative electrode. The negative electrode includes a negative electrode current collector. The negative electrode current collector includes: a layer having a first surface facing outward of the winding of the electrode group and a second surface facing inward of the winding of the electrode group; first protrusions protruding from the first surface; and second protrusions protruding from the second surface. Lithium metal is deposited on the first surface and the second surface by charging. A first average height of the first protrusions is higher than a second average height of the second protrusions.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: October 13, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Akira Kano, Ryohei Miyamae, Kiyohiro Isii, Junichi Sakamoto
  • Patent number: 10797315
    Abstract: An electrochemical device includes a negative electrode containing a negative electrode active material, a positive electrode, and an electrolyte. The negative electrode active material has a crystal structure with an Fm3m space group and contains a compound represented by composition formula (1) below, LixTiyOz ??Formula (1), where 0.4?x/y<2 and x/2+3y/2?z?x/2+2y.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: October 6, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Akira Kano, Junichi Sakamoto, Nobuhiko Hojo
  • Patent number: 10790552
    Abstract: An ECU controls a PCU to perform capacity recovery control of recovering a capacity of an assembled battery. The capacity recovery control includes a discharge mode and a capacity recovery mode. In the discharge mode, the ECU discharges the assembled battery to a predetermined overdischarge region. In the capacity recovery mode, the ECU repeatedly performs, in the overdischarge region, a voltage increase of increasing a voltage across a lithium ion secondary battery due to a stop of the discharging and a pulse discharge of discharging the lithium ion secondary battery while oscillating a discharge current.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: September 29, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keisuke Isomura, Akira Kano
  • Patent number: 10777805
    Abstract: A negative electrode active material contains a graphite material represented by a formula CaxByC1-y, where x and y satisfy 0<x<0.2 and 2x?y?0.5.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: September 15, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Go Tei, Ryohei Miyamae, Akira Kano
  • Patent number: 10770719
    Abstract: A negative electrode active material includes a carbon material including boron and a silicon material including at least one selected from silicon and silicon oxide. The silicon material does not include boron. A peak of a B1s spectrum of the carbon material occurs at a binding energy of 187.0 eV or more and 192.0 eV or less, the B1s spectrum being measured by X-ray photoelectron spectroscopy. The ratio of the area of the peak of the B1s spectrum of the carbon material which occurs at a binding energy of 187.0 eV or more and 192.0 eV or less, the B1s spectrum being measured by X-ray photoelectron spectroscopy, to the total area of peaks of the B1s spectrum which occur at a binding energy of 184.0 eV or more and 196.5 eV or less is 50% or more.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: September 8, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Akira Kano, Junko Matsushita, Nobuhiko Hojo
  • Patent number: 10700380
    Abstract: A lithium secondary battery includes a positive electrode, a negative electrode on which a lithium metal is deposited in a charged state, a separator disposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte containing a nonaqueous solvent and a lithium salt containing a carborane anion.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: June 30, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Akira Kano, Hirotetsu Suzuki, Junichi Sakamoto, Kensuke Nakura
  • Patent number: 10680243
    Abstract: A negative electrode active material includes a plurality of layers and lithium located between the plurality of layers, each of the plurality of layers containing carbon and boron, and nitrogen or phosphorus, wherein a molar ratio of the boron to the carbon is more than 0.6.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: June 9, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Akira Kano, Ryohei Miyamae, Kensuke Nakura