Patents by Inventor Masataka OYAMA

Masataka OYAMA 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: 10193155
    Abstract: A cathode material which does not easily deteriorate when used in batteries, a method for producing cathode materials, a cathode, and a lithium ion battery are provided. A cathode material including a cathode active material, in which the cathode active material is expressed by Li1+xAyDzPO4 (here, A represents one or more metal elements selected from the group consisting of Co, Mn, Ni, Fe, Cu, and Cr, D represents one or more metal elements selected from the group consisting of Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, Y, and rare earth elements, 0<x<1, 0<y<1, 0?z<1.5, and 0.9<y+z?1), and, in thermogravimetric analysis in an inert gas atmosphere, when a temperature is increased in a temperature range from 100° C. to 300° C. at a temperature-increase rate of 10° C./minute, a weight loss ratio in the temperature range is 0.3% by weight or less.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: January 29, 2019
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Masataka Oyama, Satoru Oshitari, Ryuuta Yamaya
  • Patent number: 10164241
    Abstract: An electrode material for a lithium-ion rechargeable battery of the present invention is an electrode material for a lithium-ion rechargeable battery formed by coating a surface of an electrode active material represented by General Formula LiFexMn1-x-yMyPO4 (here, M represents at least one element selected from Mg, Ca, Co, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, and rare earth elements, 0.05?x?1.0, 0?y?0.14) with a carbonaceous film, in which an angle of repose is in a range of 35° or more and 50° or less.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: December 25, 2018
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Satoru Oshitari, Masataka Oyama, Ryuuta Yamaya
  • Publication number: 20180309128
    Abstract: A cathode material is provided which comprises secondary particles of cathode active material particles including central particles of LixFeyMzPO4 and a carbonaceous film which coats the central particles, wherein a particle size distribution thereof has maximum values of a relative particle amount on both fine and coarse particle sides. A particle diameter with the maximum relative particle amount on the fine particle side is in a range A of 0.70 ?m to 2.00 ?m, and a particle diameter with the maximum relative particle amount on the coarse particle side is in a range B of 7.00 ?m to 15.00 ?m. A difference between maximum values of a relative particle amount is 2.00% to 6.00%.
    Type: Application
    Filed: March 26, 2018
    Publication date: October 25, 2018
    Inventors: Masataka OYAMA, Koji OONO, Takao KITAGAWA
  • Patent number: 10109861
    Abstract: A cathode material for a lithium-ion secondary battery of the present invention includes central particles represented by LixAyMzPO4 and a carbonaceous film that coats surfaces of the central particles, an average value of R values (I1580/I1360), which are ratios of a peak intensity (I1580) of a spectrum at a frequency band of 1,580±50 cm?1 to a peak intensity (I1360) of the spectrum at a frequency band of 1,360±50 cm?1 in a Raman spectrum analysis, measured at five points is 0.80 or more and 1.10 or less, and a standard deviation of the R values measured at five points is 0.010 or less.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: October 23, 2018
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Masataka Oyama, Takao Kitagawa
  • Publication number: 20180286316
    Abstract: The display device of the present invention includes: a display panel having an outer shape that is curved as a whole and is partially provided with multiple linear outer edge portions; and a circuit member including a main part and multiple branches coupled with the main part. Each of the linear outer edge portions is provided with a terminal on the front surface side of the display panel. The main part is provided with a driver. Each of the branches is provided with a conductive line that electrically couples the driver and the terminal. Each of ends of the branches is attached to the corresponding linear outer edge portion and is bent along the corresponding linear outer edge portion from the front surface side toward the back surface of the display panel. The main part is disposed on the back surface side of the display panel.
    Type: Application
    Filed: September 5, 2016
    Publication date: October 4, 2018
    Inventors: Ryuzo YUKI, Katsuhiro YAMAGUCHI, Hiromi ENOMOTO, Kazuyoshi MAEDA, Haruhito KAGAWA, Koji MICHIBAYASHI, Yuji TANIGUCHI, Takashi KUBO, Masataka OYAMA
  • Patent number: 10090517
    Abstract: A cathode material for a lithium-ion secondary battery includes a cathode material A which includes central particles of a cathode active material represented by LixAyMzPO4 and a carbonaceous film with which surfaces of the central particles are coated and a cathode material B which is represented by LixAyMzPO4 and is made of primary particles of a cathode active material having an olivine structure.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: October 2, 2018
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Masataka Oyama, Takao Kitagawa
  • Publication number: 20180277846
    Abstract: A cathode material for a lithium-ion secondary battery of the present invention includes active material secondary particles formed by aggregating central particles including primary particles of a cathode active material represented by General Formula LiaAxBO4 (here, A represents at least one element selected from the group consisting of Mn, Fe, Co, and Ni, B represents at least one element selected from the group consisting of P, Si, and S, 0?a<4, and 0<x<1.5) and a carbonaceous film, wherein at least a portion of surfaces of the primary particles are coated with the carbonaceous film, and the carbonaceous film is obtained by thermal decomposition of an organic compound, in which, in a charge and discharge cycle test at 60° C.
    Type: Application
    Filed: September 20, 2017
    Publication date: September 27, 2018
    Inventors: Kouji OONO, Hirofumi Yasumiishi, Masataka OYAMA, Takao KITAGAWA
  • Publication number: 20180277845
    Abstract: A cathode material for a lithium-ion secondary battery of the present invention is active material particles including central particles represented by General Formula LixAyDzPO4 (0.9<x<1.1, 0<y?1, 0?z<1, and 0.9<y+z<1.1; here, A represents at least one element selected from the group consisting of Co, Mn, Ni, Fe, Cu, and Cr, and D represents at least one element selected from the group consisting of Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, and Y) and a carbonaceous film that coats surfaces of the central particles, in which a coarse particle ratio in a particle size distribution is 35% or more and 65% or less.
    Type: Application
    Filed: September 15, 2017
    Publication date: September 27, 2018
    Inventors: Ryuuta YAMAYA, Masataka OYAMA
  • Patent number: 10074853
    Abstract: [Problems] To provide an electrode material for a lithium-ion rechargeable battery capable of improving the battery characteristics, durability, and stability of a lithium-ion rechargeable battery, an electrode for a lithium-ion rechargeable battery, and a lithium-ion rechargeable battery. [Means] An electrode material for a lithium-ion rechargeable battery of the present invention is an electrode material for a lithium-ion rechargeable battery formed by coating the surface of an electrode active material represented by General Formula LixAyDzPO4 (here, A represents at least one element selected from Co, Mn, Ni, Fe, Cu, and Cr, D represents at least one element selected from Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, and Y, 1?x?1.1, 0<y?1, 0?z<1, 0.9<y+z?1) with a carbonaceous film, in which a saturated adsorbed moisture amount in a carbonaceous film single body, which is detected in a temperature range of room temperature or more and 250° C.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: September 11, 2018
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Ryuuta Yamaya, Satoru Oshitari, Masataka Oyama
  • Patent number: 10014522
    Abstract: A cathode material for a lithium-ion secondary battery including cathode active material particles which have central particles made of LixAyMzPO4 (0?x?1.1, 0.8?y?1.1, and 0?z?0.2; here, A represents at least one element selected from the group consisting of Fe, Mn, Co, and Ni, and M represents at least one element selected from the group consisting of Mg, Ca, Co, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, and rare earth elements) and a carbonaceous film that coats surfaces of the central particles; and inorganic phosphate salt particles.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: July 3, 2018
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Masataka Oyama, Takao Kitagawa
  • Publication number: 20180097222
    Abstract: An electrode material for a lithium-ion secondary battery of the present invention is a mixture including an electrode active material A made of LiFexMn1?x?yMyPO4 (0.05?x?0.40, 0?y?0.14, 1?x?y?0, here, M represents at least one element selected from the group consisting of Mg, Ca, Co, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, and rare earth elements) and an electrode active material B made of a lithium-containing metal oxide, in which a volume change percentage due to lithium ions absorbed into and emitted from the electrode active material A is 6.2% or more and 8.3% or less.
    Type: Application
    Filed: March 27, 2017
    Publication date: April 5, 2018
    Inventors: Satoru OSHITARI, Masataka OYAMA, Naoyuki KUROSAWA, Ryuuta YAMAYA
  • Publication number: 20180097231
    Abstract: A cathode material for a lithium-ion secondary battery of the present invention is active material particles including central particles represented by LixAyMzPO4 and a carbonaceous film that coats surfaces of the central particles, in which a median diameter is 0.50 ?m or more and 0.80 ?m or less, and a chromaticity b* in an L*a*b* color space is 1.9 or more and 2.3 or less.
    Type: Application
    Filed: February 15, 2017
    Publication date: April 5, 2018
    Inventors: Masataka OYAMA, Takao KITAGAWA
  • Publication number: 20180097230
    Abstract: A cathode material for a lithium-ion secondary battery of the present invention includes central particles represented by LixAyMzPO4 and a carbonaceous film that coats surfaces of the central particles, an average value of R values (I1580/I1360), which are ratios of a peak intensity (I1580) of a spectrum at a frequency band of 1,580±50 cm?1 to a peak intensity (I1360) of the spectrum at a frequency band of 1,360±50 cm?1 in a Raman spectrum analysis, measured at five points is 0.80 or more and 1.10 or less, and a standard deviation of the R values measured at five points is 0.010 or less.
    Type: Application
    Filed: February 15, 2017
    Publication date: April 5, 2018
    Inventors: Masataka OYAMA, Takao KITAGAWA
  • Patent number: 9865869
    Abstract: An electrode material for a lithium-ion secondary battery of the present invention includes particles which are made of LiFexMn1-w-x-y-zMgyCazAwPO4, have an orthorhombic crystal structure, and have a space group of Pmna, in which a mis-fit value [(1?(b2×c2)/(b1×c1))×100] of a bc plane which is computed from lattice constants b1 and c1 of the LiFexMn1-w-x-y-zMgyCazAwPO4 and lattice constants b2 and c2 of FexMn1-w-x-y-zMgyCazAwPO4 obtained by deintercalating Li from LiFexMn1-w-x-y-zMgyCazAwPO4 by means of an oxidation treatment using nitrosonium tetrafluoroborate in acetonitrile is 1.32% or more and 1.85% or less.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: January 9, 2018
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Satoru Oshitari, Masataka Oyama, Ryuuta Yamaya
  • Publication number: 20170288213
    Abstract: An electrode material for a lithium-ion secondary battery of the present invention includes particles which are made of LiFexMn1-w-x-y-zMgyCazAwPO4, have an orthorhombic crystal structure, and have a space group of Pmna, in which a mis-fit value [(1?(b2×c2)/(b1×c1))×100] of a be plane which is computed from lattice constants b1 and c1 of the LiFexMn1-w-x-y-zMgyCazAwPO4 and lattice constants b2 and c2 of FexMn1-w-x-y-zMgyCazAwPO4 obtained by deintercalating Li from LiFexMn1-w-x-y-zMgyCazAwPO4 by means of an oxidation treatment using nitrosonium tetrafluoroborate in acetonitrile is 1.32% or more and 1.85% or less.
    Type: Application
    Filed: September 30, 2016
    Publication date: October 5, 2017
    Inventors: SATORU OSHITARI, MASATAKA OYAMA, RYUUTA YAMAYA
  • Publication number: 20170288226
    Abstract: A lithium-ion secondary battery including a cathode, an anode, and an electrolyte, in which the lithium-ion secondary battery includes inorganic phosphate particles, and the cathode includes cathode active material particles which include central particles made of LixAyMzPO4 (0?x?1.1, 0.8?y?1.1, and 0?z?0.2; here, A represents at least one element selected from the group consisting of Fe, Mn, Co, and Ni, and M represents at least one element selected from the group consisting of Mg, Ca, Co, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, and rare earth elements) and a carbonaceous film that coats surfaces of the central particles.
    Type: Application
    Filed: March 20, 2017
    Publication date: October 5, 2017
    Inventors: Masataka OYAMA, Takao KITAGAWA
  • Publication number: 20170288212
    Abstract: A cathode material for a lithium-ion secondary battery including cathode active material particles which have central particles made of LixAyMzPO4 (0?x?1.1, 0.8?y?1.1, and 0?z?0.2; here, A represents at least one element selected from the group consisting of Fs, Mn, Co, and Ni, and M represents at least one element selected from the group consisting of Mg, Ca, Co, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, and rare earth elements) and a carbonaceous film that coats surfaces of the central particles; and inorganic phosphate salt particles.
    Type: Application
    Filed: September 29, 2016
    Publication date: October 5, 2017
    Inventors: Masataka OYAMA, Takao KITAGAWA
  • Patent number: 9780372
    Abstract: [Problems] To provide an electrode material for a lithium-ion rechargeable battery having a high mass energy density at a low temperature or in a high-speed charge and discharge. [Means for Solving the Problems] An electrode material for a lithium-ion rechargeable battery includes particles which are made of LiFexMn1-w-x-y-zMgyCazAwPO4 (here, A represents at least one element selected from Co, Ni, Zn, Al, and Ga, 0?w?0.05, 0.05?x?0.35, 0.01?y?0.10, and 0.0001?z?0.002), have an orthorhombic crystal structure, and have a space group of Pmna, in which a change ratio (V1?V2)/V1 between a lattice volume V1 of LiFexMn1-w-x-y-zMgyCazAwPO4 and a lattice volume V2 of FexMn1-w-x-y-zMgyCazAwPO4 obtained by chemically deintercalating Li from LiFexMn1-w-x-y-zMgyCazAwPO4 is in a range of 0.06 to 0.09.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: October 3, 2017
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Satoru Oshitari, Masataka Oyama, Ryuuta Yamaya
  • Publication number: 20170250399
    Abstract: A cathode material for a lithium-ion secondary battery includes a cathode material A which includes central particles of a cathode active material represented by LixAyMzPO4 and a carbonaceous film with which surfaces of the central particles are coated and a cathode material B which is represented by LixAyMzPO4 and is made of primary particles of a cathode active material having an olivine structure.
    Type: Application
    Filed: September 30, 2016
    Publication date: August 31, 2017
    Inventors: MASATAKA OYAMA, TAKAO KITAGAWA
  • Publication number: 20170237064
    Abstract: An electrode material for a lithium-ion secondary battery includes an electrode active material and a carbonaceous film with which a surface of the electrode active material is coated, in which a powder resistance under compression at a pressure of 45 MPa is 130 ?·cm or lower and a lithium-ion secondary battery including a cathode including the electrode material for a lithium-ion secondary battery and an anode made of lithium metal exhibits battery characteristics that a difference between a sum of a charge capacity thereof obtained when constant current charged with an upper limit voltage with respect to the anode set to 4.20 V and a charge capacity thereof obtained when constant voltage charged at 4.20 V for ten days after the constant current charge and a discharge capacity thereof obtained when constant current discharged to 2 V after the constant voltage charge is set to 20 mAh/g or lower.
    Type: Application
    Filed: September 30, 2016
    Publication date: August 17, 2017
    Inventors: TAKAO KITAGAWA, MASATAKA OYAMA