Patents by Inventor Mitsuru Yamauchi

Mitsuru Yamauchi 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).

  • Publication number: 20210166864
    Abstract: An electronic component includes an element body including two end surfaces opposite to each other and a bottom surface connected between the two end surfaces. A coil is provided in the element body and an external electrode is provided in the element body. In a first cross-section intersecting with the two end surfaces and the bottom surface of the element body, the external electrode has a first portion extending along a first surface that is one of the end surface and the bottom surface of the element body. The coil is disposed such that an outer circumferential edge of the coil faces the first surface of the element body. A shortest distance between the outer circumferential edge of the coil and the first surface of the element body is smaller than a minimum width of the first portion in a direction orthogonal to the first surface.
    Type: Application
    Filed: February 3, 2021
    Publication date: June 3, 2021
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Yuta SHIMODA, Mitsuru YAMAUCHI
  • Patent number: 10943727
    Abstract: An electronic component includes an element body including two end surfaces opposite to each other and a bottom surface connected between the two end surfaces. A coil is provided in the element body and an external electrode is provided in the element body. In a first cross-section intersecting with the two end surfaces and the bottom surface of the element body, the external electrode has a first portion extending along a first surface that is one of the end surface and the bottom surface of the element body. The coil is disposed such that an outer circumferential edge of the coil faces the first surface of the element body. A shortest distance between the outer circumferential edge of the coil and the first surface of the element body is smaller than a minimum width of the first portion in a direction orthogonal to the first surface.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: March 9, 2021
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Yuta Shimoda, Mitsuru Yamauchi
  • Patent number: 10777813
    Abstract: A positive electrode active material for non-aqueous electrolyte secondary battery with improved cycle characteristics and high temperature storage characteristics, without impairing an advantage of high capacity which lithium nickel composite oxide inherently possesses. The positive electrode active material for non-aqueous electrolyte secondary battery includes lithium nickel composite oxide represented by a general formula (1): Li1+uNi1?x?y?zCoxMnyMgzO2 (However, u, x, y and z in the formula satisfies 0.015?u?0.030, 0.05?x?0.20, 0.01?y?0.10, 0.01?z?0.05, 0.10?x+y+z?0.25.), and wherein crystallite diameter is 100 nm to 130 nm. In addition, the positive electrode active material for non-aqueous electrolyte secondary battery is produced at least by an oxidation roasting step, a mixing step, and a calcining step.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: September 15, 2020
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mitsuru Yamauchi, Ryozo Ushio
  • Publication number: 20200152972
    Abstract: A positive electrode active material for a non-aqueous electrolyte secondary battery achieves high output characteristics and battery capacity, and allows a high electrode density to be achieved in the case of using the material for a positive electrode of a battery; and a non-aqueous electrolyte secondary battery uses the positive electrode active material, thereby achieving a high output with a high capacity. Prepared is a nickel composite hydroxide including plate-shaped secondary particles aggregated with overlaps between plate surfaces of multiple plate-shaped primary particles, where shapes projected from directions perpendicular to the plate surfaces of the plate-shaped primary particles are any plane projection shape of spherical, elliptical, oblong, and massive shapes, and the secondary particles have an aspect ratio of 3 to 20, and a volume average particle size (Mv) of 4 ?m to 20 ?m measured by a laser diffraction scattering method.
    Type: Application
    Filed: January 10, 2020
    Publication date: May 14, 2020
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mitsuru YAMAUCHI, Kazuomi RYOSHI, Kensaku MORI
  • Publication number: 20200127287
    Abstract: Provided is a positive electrode active material that has high output characteristics and battery capacity when used for a positive electrode of a nonaqueous electrolyte secondary battery and can inhibit gelation of positive electrode mixture paste. A method for producing the positive electrode active material is also provided. A positive electrode active material for a nonaqueous electrolyte secondary battery contains a lithium-nickel-cobalt-manganese composite oxide represented by General Formula (1): Lii+sNixCoyMnzBLM1uO2+? and having a hexagonal layered crystal structure. The lithium-nickel-cobalt-manganese composite oxide contains a secondary particle formed of a plurality of flocculated primary particles and a boron compound containing lithium present at least on part of surfaces of the primary particles. A water-soluble Li amount present on the surfaces of the primary particles is up to 0.1% by mass relative to the entire amount of the positive electrode active material.
    Type: Application
    Filed: September 13, 2017
    Publication date: April 23, 2020
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mitsuru Yamauchi, Tetsufumi Komukai
  • Patent number: 10573886
    Abstract: A positive electrode active material for a non-aqueous electrolyte secondary battery achieves high output characteristics and battery capacity, and allows a high electrode density to be achieved in the case of using the material for a positive electrode of a battery; and a non-aqueous electrolyte secondary battery uses the positive electrode active material, thereby achieving a high output with a high capacity. Prepared is a nickel composite hydroxide including plate-shaped secondary particles aggregated with overlaps between plate surfaces of multiple plate-shaped primary particles, where shapes projected from directions perpendicular to the plate surfaces of the plate-shaped primary particles are any plane projection shape of spherical, elliptical, oblong, and massive shapes, and the secondary particles have an aspect ratio of 3 to 20, and a volume average particle size (Mv) of 4 ?m to 20 ?m measured by a laser diffraction scattering method.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: February 25, 2020
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mitsuru Yamauchi, Kazuomi Ryoshi, Kensaku Mori
  • Patent number: 10505191
    Abstract: A positive electrode active material for non-aqueous electrolyte secondary batteries that can achieve a high output characteristic and a high battery capacity when used in a positive electrode of a battery and that can achieve a high electrode density, and a non-aqueous electrolyte secondary battery that uses such a positive electrode active material and can achieve a high capacity and a high output. A lithium-manganese-cobalt composite oxide includes plate-shaped secondary particles each obtained by aggregation of a plurality of plate-shaped primary particles caused by overlapping of plate surfaces of the plate-shaped primary particles, wherein a shape of the primary particles is any one of a spherical, elliptical, oval, or a planar projected shape of a block-shaped object, and the secondary particles have an aspect ratio of 3 to 20 and a volume-average particle size (Mv) of 4 ?m to 20 ?m as measured by a laser diffraction scattering process.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: December 10, 2019
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mitsuru Yamauchi, Kazuomi Ryoshi
  • Publication number: 20190348675
    Abstract: A positive electrode active material for non-aqueous electrolyte secondary batteries that can achieve a high output characteristic and a high battery capacity when used in a positive electrode of a battery and that can achieve a high electrode density, and a non-aqueous electrolyte secondary battery that uses such a positive electrode active material and can achieve a high capacity and a high output. A lithium-manganese-cobalt composite oxide includes plate-shaped secondary particles each obtained by aggregation of a plurality of plate-shaped primary particles caused by overlapping of plate surfaces of the plate-shaped primary particles, wherein a shape of the primary particles is any one of a spherical, elliptical, oval, or a planar projected shape of a block-shaped object, and the secondary particles have an aspect ratio of 3 to 20 and a volume-average particle size (Mv) of 4 ?m to 20 ?m as measured by a laser diffraction scattering process.
    Type: Application
    Filed: July 24, 2019
    Publication date: November 14, 2019
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mitsuru YAMAUCHI, Kazuomi RYOSHI
  • Patent number: 10230105
    Abstract: Obtaining cobalt hydroxide particles having a high filling property and a high density. The cobalt hydroxide particles used as a precursor for a positive electrode active material of a non-aqueous electrolyte secondary battery, including spherical secondary particles of flocculated primary particles, wherein average aspect ratio of the secondary particles is 0.7 or more, average particle diameter is 5 to 35 ?m, and a value of (d90?d10)/MV indicating a dispersion of a particle size distribution is 0.6 or less, wherein, in sectional observation of the secondary particles, a ratio (N/L) of number (N) of gaps with maximum long diameter 0.3 ?m or more recognized in particles of the secondary particles with sectional long diameter 3 ?m or more to sectional long diameter (L) of the secondary particles is 1.0 or less, and also, maximum long diameter of the gaps is 15% or less of sectional long diameter of the secondary particles.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: March 12, 2019
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mitsuru Yamauchi, Kazuomi Ryoshi, Shuzo Ozawa, Ryozo Ushio
  • Patent number: 10177373
    Abstract: A positive electrode active material for a non-aqueous electrolyte secondary battery, including primary particles of a lithium nickel composite oxide represented by the formula: LibNi1-x-yCoxMyO2 wherein M represents at least one element selected from Mg, Al, Ca, Ti, V, Cr, Mn, Nb, Zr and Mo; b represents a number satisfying 0.95?b?1.03; and x represents a number satisfying 0<x?0.15 and y represents a number satisfying 0<y?0.07, wherein the sum total of x and y is 0.16 or smaller, i.e., x+y?0.16) and secondary particles that are aggregates of the primary particles, wherein microparticles containing W and Li are present on the surface of each of the primary particles, and the length of axis-c of the lithium nickel composite oxide is 14.183 angstroms or more as determined by a Rietveld analysis of X-ray diffraction data on the oxide.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: January 8, 2019
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Jun Yokoyama, Yuki Furuichi, Tomoko Nakayama, Tetsufumi Komukai, Kensaku Mori, Mitsuru Yamauchi
  • Publication number: 20180145321
    Abstract: A positive electrode active material for non-aqueous electrolyte secondary battery with improved cycle characteristics and high temperature storage characteristics, without impairing an advantage of high capacity which lithium nickel composite oxide inherently possesses. The positive electrode active material for non-aqueous electrolyte secondary battery includes lithium nickel composite oxide represented by a general formula (1): Li1+uNi1?x?y?zCoxMnyMgzO2 (However, u, x, y and z in the formula satisfies 0.015?u?0.030, 0.05?x?0.20, 0.01?y?0.10, 0.01?z?0.05, 0.10?x+y+z?0.25.), and wherein crystallite diameter is 100 nm to 130 nm. In addition, the positive electrode active material for non-aqueous electrolyte secondary battery is produced at least by an oxidation roasting step, a mixing step, and a calcining step.
    Type: Application
    Filed: April 13, 2016
    Publication date: May 24, 2018
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mitsuru YAMAUCHI, Ryozo USHIO
  • Publication number: 20180068780
    Abstract: An electronic component includes an element body including two end surfaces opposite to each other and a bottom surface connected between the two end surfaces. A coil is provided in the element body and an external electrode is provided in the element body. In a first cross-section intersecting with the two end surfaces and the bottom surface of the element body, the external electrode has a first portion extending along a first surface that is one of the end surface and the bottom surface of the element body. The coil is disposed such that an outer circumferential edge of the coil faces the first surface of the element body. A shortest distance between the outer circumferential edge of the coil and the first surface of the element body is smaller than a minimum width of the first portion in a direction orthogonal to the first surface.
    Type: Application
    Filed: July 31, 2017
    Publication date: March 8, 2018
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Yuta SHIMODA, Mitsuru YAMAUCHI
  • Publication number: 20170271653
    Abstract: A positive electrode active material for a non-aqueous electrolyte secondary battery achieves high output characteristics and battery capacity, and allows a high electrode density to be achieved in the case of using the material for a positive electrode of a battery; and a non-aqueous electrolyte secondary battery uses the positive electrode active material, thereby achieving a high output with a high capacity. Prepared is a nickel composite hydroxide including plate-shaped secondary particles aggregated with overlaps between plate surfaces of multiple plate-shaped primary particles, where shapes projected from directions perpendicular to the plate surfaces of the plate-shaped primary particles are any plane projection shape of spherical, elliptical, oblong, and massive shapes, and the secondary particles have an aspect ratio of 3 to 20, and a volume average particle size (Mv) of 4 ?m to 20 ?m measured by a laser diffraction scattering method.
    Type: Application
    Filed: April 24, 2015
    Publication date: September 21, 2017
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mitsuru YAMAUCHI, Kazuomi RYOSHI, Kensaku MORI
  • Patent number: 9685656
    Abstract: Provided is a cathode active material for a non-aqueous electrolyte secondary battery that has a uniform particle size and high packing density, and that is capable of increased battery capacity and improved coulomb efficiency. When producing a nickel composite hydroxide that is a precursor to the cathode active material by supplying an aqueous solution that includes at least a nickel salt, a neutralizing agent and a complexing agent into a reaction vessel while stirring and performing a crystallization reaction, a nickel composite hydroxide slurry is obtained while controlling the ratio of the average particle size per volume of secondary particles of nickel composite hydroxide that is generated inside the reaction vessel with respect to the average particle size per volume of secondary particles of nickel composite hydroxide that is finally obtained so as to be 0.2 to 0.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: June 20, 2017
    Assignee: SUMITOMO METAL MINING CO., LTD
    Inventors: Mitsuru Yamauchi, Kazuomi Ryoshi, Kensaku Mori
  • Publication number: 20170155144
    Abstract: A positive electrode active material for non-aqueous electrolyte secondary batteries that can achieve a high output characteristic and a high battery capacity when used in a positive electrode of a battery and that can achieve a high electrode density, and a non-aqueous electrolyte secondary battery that uses such a positive electrode active material and can achieve a high capacity and a high output. A lithium-manganese-cobalt composite oxide includes plate-shaped secondary particles each obtained by aggregation of a plurality of plate-shaped primary particles caused by overlapping of plate surfaces of the plate-shaped primary particles, wherein a shape of the primary particles is any one of a spherical, elliptical, oval, or a planar projected shape of a block-shaped object, and the secondary particles have an aspect ratio of 3 to 20 and a volume-average particle size (Mv) of 4 ?m to 20 ?m as measured by a laser diffraction scattering process.
    Type: Application
    Filed: April 24, 2015
    Publication date: June 1, 2017
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mitsuru YAMAUCHI, Kazuomi RYOSHI
  • Publication number: 20170104208
    Abstract: Provided is a cathode active material for a non-aqueous electrolyte secondary battery that has a uniform particle size and high packing density, and that is capable of increased battery capacity and improved coulomb efficiency. When producing a nickel composite hydroxide that is a precursor to the cathode active material by supplying an aqueous solution that includes at least a nickel salt, a neutralizing agent and a complexing agent into a reaction vessel while stirring and performing a crystallization reaction, a nickel composite hydroxide slurry is obtained while controlling the ratio of the average particle size per volume of secondary particles of nickel composite hydroxide that is generated inside the reaction vessel with respect to the average particle size per volume of secondary particles of nickel composite hydroxide that is finally obtained so as to be 0.2 to 0.
    Type: Application
    Filed: December 22, 2016
    Publication date: April 13, 2017
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: MITSURU YAMAUCHI, KAZUOMI RYOSHI, KENSAKU MORI
  • Patent number: 9583764
    Abstract: When producing a nickel composite hydroxide that is a precursor to the cathode active material for a non-aqueous electrolyte secondary battery by supplying an aqueous solution that includes at least a nickel salt, a neutralizing agent and a complexing agent into a reaction vessel while stirring and performing a crystallization reaction, a nickel composite hydroxide slurry is obtained while controlling the ratio of the average particle size per volume of secondary particles of nickel composite hydroxide that is generated inside the reaction vessel with respect to the average particle size per volume of secondary particles of nickel composite hydroxide that is finally obtained so as to be 0.2 to 0.6, after which, while keeping the amount of slurry constant and continuously removing only the liquid component, the crystallization reaction is continued until the average particle size per volume of secondary particles of the nickel composite hydroxide becomes 8.0 ?m to 50.0 ?m.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: February 28, 2017
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mitsuru Yamauchi, Kazuomi Ryoshi, Kensaku Mori
  • Publication number: 20170054147
    Abstract: A positive electrode active material for a non-aqueous electrolyte secondary battery, including primary particles of a lithium nickel composite oxide represented by the formula: LibNi1-x-yCoxMyO2 wherein M represents at least one element selected from Mg, Al, Ca, Ti, V, Cr, Mn, Nb, Zr and Mo; b represents a number satisfying 0.95?b?1.03; and x represents a number satisfying 0<x?0.15 and y represents a number satisfying 0<y?0.07, wherein the sum total of x and y is 0.16 or smaller, i.e., x+y?0.16) and secondary particles that are aggregates of the primary particles, wherein microparticles containing W and Li are present on the surface of each of the primary particles, and the length of axis-c of the lithium nickel composite oxide is 14.183 angstroms or more as determined by a Rietveld analysis of X-ray diffraction data on the oxide.
    Type: Application
    Filed: April 20, 2015
    Publication date: February 23, 2017
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Jun Yokoyama, Yuki Furuichi, Tomoko Nakayama, Tetsufumi Komukai, Kensaku Mori, Mitsuru Yamauchi
  • Patent number: 9553312
    Abstract: Provided is a cathode active material for a non-aqueous electrolyte secondary battery that has a uniform particle size and high packing density, and that is capable of increased battery capacity and improved coulomb efficiency. When producing a nickel composite hydroxide that is a precursor to the cathode active material by supplying an aqueous solution that includes at least a nickel salt, a neutralizing agent and a complexing agent into a reaction vessel while stirring and performing a crystallization reaction, a nickel composite hydroxide slurry is obtained while controlling the ratio of the average particle size per volume of secondary particles of nickel composite hydroxide that is generated inside the reaction vessel with respect to the average particle size per volume of secondary particles of nickel composite hydroxide that is finally obtained so as to be 0.2 to 0.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: January 24, 2017
    Assignee: SUMITOMO METAL MINING CO., LTD
    Inventors: Mitsuru Yamauchi, Kazuomi Ryoshi, Kensaku Mori
  • Publication number: 20160308207
    Abstract: Obtaining cobalt hydroxide particles having a high filling property and a high density. The cobalt hydroxide particles used as a precursor for a positive electrode active material of a non-aqueous electrolyte secondary battery, including spherical secondary particles of flocculated primary particles, wherein average aspect ratio of the secondary particles is 0.7 or more, average particle diameter is 5 to 35 ?m, and a value of (d90-d10)/MV indicating a dispersion of a particle size distribution is 0.6 or less, wherein, in sectional observation of the secondary particles, a ratio (N/L) of number (N) of gaps with maximum long diameter 0.3 ?m or more recognized in particles of the secondary particles with sectional long diameter 3 ?m or more to sectional long diameter (L) of the secondary particles is 1.0 or less, and also, maximum long diameter of the gaps is 15% or less of sectional long diameter of the secondary particles.
    Type: Application
    Filed: January 22, 2015
    Publication date: October 20, 2016
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mitsuru YAMAUCHI, Kazuomi RYOSHI, Shuzo OZAWA, Ryozo USHIO