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: 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
  • Publication number: 20160268605
    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: April 22, 2016
    Publication date: September 15, 2016
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: MITSURU YAMAUCHI, Kazuomi Ryoshi, Kensaku Mori
  • Publication number: 20150037676
    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: February 22, 2013
    Publication date: February 5, 2015
    Applicant: Sumitomo Metal Mining Co., Ltd.
    Inventors: Mitsuru Yamauchi, Kazuomi Ryoshi, Kensaku Mori
  • Patent number: 5237624
    Abstract: In a system for reproducing an image pattern data, a decision point designation means exclusively designates a decision point at the corresponding coordinate position in a coordinate region of image pattern reproduction in divisional coordinate regions when a decision point extracted based on a region decision data obtained by region decision means is located in a region of the first kind, exclusively designates a decision point at the scan starting point of a coordinate region of image pattern reproduction when the extracted decision point is located in a region of the second kind, designates no decision point when the extracted decision point is located in a region of the third kind, and, based on the designation by the decision point designation means, a shading of dots of the image is carried out.
    Type: Grant
    Filed: August 16, 1991
    Date of Patent: August 17, 1993
    Assignee: Fujitsu Limited
    Inventors: Masayuki Okamoto, Mitsuru Yamauchi
  • Patent number: 5214754
    Abstract: A computer graphic apparatus uses a method and apparatus to approximate a polygonal line of a plurality of line segments (L.sub.1, L.sub.2 . . . ) to a curve (X). The curve is divided into two curve portions (P.sub.10 P.sub.11, P.sub.11 P.sub.02) at a division point (P.sub.11). An error (e) between a line segment (P.sub.01 P.sub.02) linking the start and end points (P.sub.01, P.sub.02) of the curve and the division point is compared with a predetermined value (V.sub.th). When the error is small, the line segment is treated as one part of the polygonal line, but in another case, the above-mentioned process is repeated.
    Type: Grant
    Filed: November 19, 1991
    Date of Patent: May 25, 1993
    Assignee: Fujitsu Limited
    Inventors: Masayuki Okamoto, Mitsuru Yamauchi, Toshiya Mima
  • Patent number: 4574347
    Abstract: A data processing apparatus includes a CPU, a memory, and logic operation hardware. When a predetermined instruction code is identified, the logic operation hardware executes an arithmetic operation using data stored in the memory, while the CPU processes the same data. The logic operation hardware then writes the result of the arithmetic operation instead of the data processed by the CPU.
    Type: Grant
    Filed: November 7, 1983
    Date of Patent: March 4, 1986
    Assignee: Fujitsu Limited
    Inventors: Shosuke Mori, Makoto Awaga, Kiminori Fujisaku, Mitsuru Yamauchi, Hitoshi Ono
  • Patent number: 4452828
    Abstract: Disclosed is an production method for plasma chemical vapor deposition (CVD) of amorphous silicon films providing improved throughput and film yield. According to the present invention, a glow discharge is generated in a reaction chamber containing a gaseous silicon-containing compound, such as monosilane (SiH.sub.4) or tetraflourosilane (SiF.sub.4), by the imposition of an electric field between a pair of spaced-apart electrodes within the chamber. The electric field is established by connecting an appropriate DC or high frequency driving voltage to one of the pair of electrodes and ground potential to the other. In the case where a high frequency driving voltage is used, connection to the driven electrode is made through a coupling capacitor, and the frequency of the driving voltage is selected such that a DC potential develops between the pair of electrodes.
    Type: Grant
    Filed: May 10, 1982
    Date of Patent: June 5, 1984
    Assignee: Fuji Electric Company, Ltd.
    Inventors: Masaharu Namba, Mitsuru Yamauchi, Toyoki Kazama