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).
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Patent number: 11961653Abstract: 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: GrantFiled: February 3, 2021Date of Patent: April 16, 2024Assignee: Murata Manufacturing Co., Ltd.Inventors: Yuta Shimoda, Mitsuru Yamauchi
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Patent number: 11664152Abstract: 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: GrantFiled: October 1, 2021Date of Patent: May 30, 2023Assignee: Murata Manufacturing Co., Ltd.Inventors: Yuta Shimoda, Mitsuru Yamauchi
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Patent number: 11374220Abstract: 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: GrantFiled: July 24, 2019Date of Patent: June 28, 2022Assignee: SUMITOMO METAL MINING CO., LTD.Inventors: Mitsuru Yamauchi, Kazuomi Ryoshi
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Publication number: 20220158185Abstract: A nickel composite hydroxide includes nickel, cobalt, manganese, and an element M with an atomic ratio of Ni:Co:Mn:M=1?x1?y1?z1:x1:y1:z1 (wherein M is at least one element selected from a group consisting of a transition metal element other than Ni, Co, Mn, a II group element, and a XIII group element, 0.15?0.25, 0.15?y1?0.25, 0?z1?0.1), the nickel composite hydroxide having a cobalt or manganese rich layer from a surface of a particle of the secondary particles toward an inside of the secondary particles and a layered low-density layer between the cobalt or manganese rich layer and a center of the particle of the secondary particles, and a thickness of the cobalt or manganese rich layer and low-density layer is 1% or more and 10% or less to a diameter of the secondary particles.Type: ApplicationFiled: April 24, 2020Publication date: May 19, 2022Applicant: SUMITOMO METAL MINING CO., LTD.Inventors: Mitsuru YAMAUCHI, Tai ITO, Tetsufumi KOMUKAI
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Publication number: 20220051844Abstract: 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: ApplicationFiled: October 22, 2021Publication date: February 17, 2022Applicant: Murata Manufacturing Co., Ltd.Inventors: Yuta SHIMODA, Mitsuru YAMAUCHI
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Publication number: 20220028601Abstract: 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: ApplicationFiled: October 1, 2021Publication date: January 27, 2022Applicant: Murata Manufacturing Co., Ltd.Inventors: Yuta SHIMODA, Mitsuru YAMAUCHI
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Patent number: 11205774Abstract: 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: GrantFiled: January 10, 2020Date of Patent: December 21, 2021Assignee: SUMITOMO METAL MINING CO., LTD.Inventors: Mitsuru Yamauchi, Kazuomi Ryoshi, Kensaku Mori
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Patent number: 11196048Abstract: 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+sNixCoyMnzBtM1uO2+? 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: GrantFiled: September 13, 2017Date of Patent: December 7, 2021Assignee: SUMITOMO METAL MINING CO., LTD.Inventors: Mitsuru Yamauchi, Tetsufumi Komukai
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Publication number: 20210166864Abstract: 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: ApplicationFiled: February 3, 2021Publication date: June 3, 2021Applicant: Murata Manufacturing Co., Ltd.Inventors: Yuta SHIMODA, Mitsuru YAMAUCHI
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Patent number: 10943727Abstract: 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: GrantFiled: July 31, 2017Date of Patent: March 9, 2021Assignee: Murata Manufacturing Co., Ltd.Inventors: Yuta Shimoda, Mitsuru Yamauchi
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Patent number: 10777813Abstract: 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: GrantFiled: April 13, 2016Date of Patent: September 15, 2020Assignee: SUMITOMO METAL MINING CO., LTD.Inventors: Mitsuru Yamauchi, Ryozo Ushio
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Publication number: 20200152972Abstract: 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: ApplicationFiled: January 10, 2020Publication date: May 14, 2020Applicant: SUMITOMO METAL MINING CO., LTD.Inventors: Mitsuru YAMAUCHI, Kazuomi RYOSHI, Kensaku MORI
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Publication number: 20200127287Abstract: 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: ApplicationFiled: September 13, 2017Publication date: April 23, 2020Applicant: SUMITOMO METAL MINING CO., LTD.Inventors: Mitsuru Yamauchi, Tetsufumi Komukai
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Patent number: 10573886Abstract: 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: GrantFiled: April 24, 2015Date of Patent: February 25, 2020Assignee: SUMITOMO METAL MINING CO., LTD.Inventors: Mitsuru Yamauchi, Kazuomi Ryoshi, Kensaku Mori
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Patent number: 10505191Abstract: 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: GrantFiled: April 24, 2015Date of Patent: December 10, 2019Assignee: SUMITOMO METAL MINING CO., LTD.Inventors: Mitsuru Yamauchi, Kazuomi Ryoshi
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Publication number: 20190348675Abstract: 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: ApplicationFiled: July 24, 2019Publication date: November 14, 2019Applicant: SUMITOMO METAL MINING CO., LTD.Inventors: Mitsuru YAMAUCHI, Kazuomi RYOSHI
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Patent number: 10230105Abstract: 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: GrantFiled: January 22, 2015Date of Patent: March 12, 2019Assignee: SUMITOMO METAL MINING CO., LTD.Inventors: Mitsuru Yamauchi, Kazuomi Ryoshi, Shuzo Ozawa, Ryozo Ushio
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Patent number: 10177373Abstract: 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: GrantFiled: April 20, 2015Date of Patent: January 8, 2019Assignee: SUMITOMO METAL MINING CO., LTD.Inventors: Jun Yokoyama, Yuki Furuichi, Tomoko Nakayama, Tetsufumi Komukai, Kensaku Mori, Mitsuru Yamauchi
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Publication number: 20180145321Abstract: 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: ApplicationFiled: April 13, 2016Publication date: May 24, 2018Applicant: SUMITOMO METAL MINING CO., LTD.Inventors: Mitsuru YAMAUCHI, Ryozo USHIO
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Publication number: 20180068780Abstract: 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: ApplicationFiled: July 31, 2017Publication date: March 8, 2018Applicant: Murata Manufacturing Co., Ltd.Inventors: Yuta SHIMODA, Mitsuru YAMAUCHI