Patents by Inventor Tsutomu Nozoe

Tsutomu Nozoe 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: 11228035
    Abstract: A positive electrode material for a lithium ion secondary battery includes an olivine-type phosphate-based compound represented by General Formula LixAyDzPO4 and carbon, and, in transmission electron microscopic observation of a cross section of a secondary particle that is an agglomerate of primary particles of the olivine-type phosphate-based compound, a 300-point average value of filling rates of the carbon that fills insides of voids having a diameter of 5 nm or larger that are formed by the primary particles is 30 to 70%. A is any one of Co, Mn, Ni, Fe, Cu, and Cr, D is any one of Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, and Y, and x, y, and z satisfy 0.9<x<1.1, 0<y?1.0, 0?z<1.0, and 0.9<y+z<1.1.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: January 18, 2022
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Satoru Oshitari, Kouji Oono, Tsutomu Nozoe
  • Patent number: 11158852
    Abstract: A positive electrode material for lithium-ion secondary batteries, wherein the positive electrode material includes a carbon-coated positive electrode active material which comprises primary particles, secondary particles, and a carbon film, wherein the primary particles and the secondary particles are coated with the carbon film, wherein the primary particles consists of a positive electrode active material in which a strain of the positive electrode active material, which is calculated by X-ray diffraction measurement, is 0.01% or higher and 0.1% or lower, and a ratio (B/A) of a crystallite diameter B (nm) of the positive electrode active material to an average primary particle diameter A (nm) of the carbon-coated positive electrode active material is 0.9 or higher and 1.5 or lower, wherein the particle diameter A is calculated from a specific surface area of the carbon-coated positive electrode active material, wherein the specific surface area is obtained using a BET method.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: October 26, 2021
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Tsutomu Nozoe, Toyomasa Nakano
  • Publication number: 20210305571
    Abstract: A positive electrode material for a lithium ion secondary battery containing carbon, in which, when a peak of the carbon that is measured by Raman scattering and is present at 2200 to 3400 cm?1 is peak-separated into peaks including five types of Voigt functions of a peak 1 having a peak top present at 2200 to 2380 cm?1, a peak 2 having a peak top present at 2400 to 2550 cm?1, a peak 3 having a peak top present at 2600 to 2750 cm?1, a peak 4 having a peak top present at 2850 to 2950 cm?1, and a peak 5 having a peak top present at 3100 to 3250 cm?1, an average of proportions of Gaussian functions in the peak 3 and the peak 4 is 90% or more and less than 100%.
    Type: Application
    Filed: September 24, 2020
    Publication date: September 30, 2021
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Tsutomu NOZOE, Toyomasa NAKANO
  • Publication number: 20210305618
    Abstract: The positive electrode material for lithium ion secondary batteries includes a mixture including a positive electrode active material in which a length of a longest side of a primary particle is 1 nm or more and 1000 nm or less and a NASICON-type compound in which a length of a longest side of a primary particle is 1 nm or more and 1000 nm or less.
    Type: Application
    Filed: September 25, 2020
    Publication date: September 30, 2021
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Satoru OSHITARI, Kouji OONO, Tsutomu NOZOE
  • Publication number: 20210296649
    Abstract: A positive electrode material for a lithium ion secondary battery includes an olivine-type phosphate-based compound represented by General Formula LixAyDzPO4 and carbon, and, in transmission electron microscopic observation of a cross section of a secondary particle that is an agglomerate of primary particles of the olivine-type phosphate-based compound, a 300-point average value of filling rates of the carbon that fills insides of voids having a diameter of 5 nm or larger that are formed by the primary particles is 30 to 70%. A is any one of Co, Mn, Ni, Fe, Cu, and Cr, D is any one of Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, and Y, and x, y, and z satisfy 0.9<x<1.1, 0<y?1.0, 0?z<1.0, and 0.9<y+z<1.1.
    Type: Application
    Filed: September 24, 2020
    Publication date: September 23, 2021
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Satoru OSHITARI, Kouji OONO, Tsutomu NOZOE
  • Publication number: 20210098780
    Abstract: A positive electrode material for a lithium ion secondary battery, including core particles and a carbonaceous film coating a surface of the core particles, in which in a Raman spectrum analysis of the carbonaceous film, in a case where a peak intensity of a spectrum in a wave number band of 1,200 to 1,400 cm?1 is set as D, a minimum intensity of 1,400 to 1,550 cm?1 is set as V, and a peak intensity of the spectrum of 1,550 to 1,700 cm?1 is set as G, an average D/G is 0.77 or more and 0.98 or less and an average V/G is 0.50 or more and 0.66 or less, and each of variation coefficients of D/G and V/G is 2% or less.
    Type: Application
    Filed: March 6, 2020
    Publication date: April 1, 2021
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Tsutomu NOZOE, Toyomasa NAKANO
  • Publication number: 20210098781
    Abstract: A positive electrode material for a lithium ion secondary battery, including core particles and a carbonaceous film coating a surface of the core particles, in which in a Raman spectrum analysis of the carbonaceous film, in a case where a peak intensity of a spectrum in a wave number band of 1,200 to 1,400 cm?1 is set as D, a minimum intensity of 1,400 to 1,550 cm?1 is set as V, and a peak intensity of the spectrum of 1,550 to 1,700 cm?1 is set as G, an average D/G is 0.77 or more and 0.98 or less and an average V/G is 0.50 or more and 0.66 or less, and in a case where the average D/G is set as a and the average V/G is set as b, X falls within a range of ?0.1?X?0.1 in Expression X=a?1.47b.
    Type: Application
    Filed: March 9, 2020
    Publication date: April 1, 2021
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Tsutomu NOZOE, Toyomasa NAKANO
  • Publication number: 20200360250
    Abstract: The titanium oxide powder of the present invention is a titanium oxide powder having a BET specific surface area of 5 m2/g or more and 15 m2/g or less and containing polyhedral-shaped titanium oxide particles having eight or more faces, in which an L value in Lab color space thereof is 75 or higher.
    Type: Application
    Filed: December 27, 2018
    Publication date: November 19, 2020
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Tsutomu NOZOE, Teppei YAKUBO, Tetsuro ITAGAKI
  • Publication number: 20200325034
    Abstract: A titanium oxide powder of the present invention has a BET specific surface area of 5 m2/g or more and 15 m2/g or less and contains polyhedral-shaped titanium oxide particles having eight or more faces, in which a mass reduction rate in a case of being heated at 800° C. for 1 hour in an air atmosphere is 0.03% by mass or more and 0.5% by mass or less.
    Type: Application
    Filed: December 27, 2018
    Publication date: October 15, 2020
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Teppei YAKUBO, Tsutomu NOZOE, Tetsuro ITAGAKI
  • Publication number: 20200313172
    Abstract: A positive electrode material for lithium-ion secondary batteries, wherein the positive electrode material includes a carbon-coated positive electrode active material which comprises primary particles, secondary particles, and a carbon film, wherein the primary particles and the secondary particles are coated with the carbon film, wherein the primary particles consists of a positive electrode active material in which a strain of the positive electrode active material, which is calculated by X-ray diffraction measurement, is 0.01% or higher and 0.1% or lower, and a ratio (B/A) of a crystallite diameter B (nm) of the positive electrode active material to an average primary particle diameter A (nm) of the carbon-coated positive electrode active material is 0.9 or higher and 1.5 or lower, wherein the particle diameter A is calculated from a specific surface area of the carbon-coated positive electrode active material, wherein the specific surface area is obtained using a BET method.
    Type: Application
    Filed: September 27, 2019
    Publication date: October 1, 2020
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Tsutomu NOZOE, Toyomasa NAKANO
  • Publication number: 20200287209
    Abstract: An electrode material including a carbonaceous-coated electrode active material having primary particles of the electrode active material and secondary particles that are aggregates of the primary particles, and a carbonaceous film that coats the primary particles of the electrode active material and the secondary particles that are the aggregates of the primary particles, in which a specific surface area, which is obtained using a nitrogen adsorption method, is 4 m2/g or more and 40 m2/g or less, a volume of micropores per unit mass is 0.05 cm3/g or more and 0.3 cm3/g or less, and an average micropore diameter, which is obtained from the volume of the micropores per unit mass and the specific surface area, is 26 nm or more and 90 nm or less.
    Type: Application
    Filed: September 4, 2019
    Publication date: September 10, 2020
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Kouji Oono, Satoru Oshitari, Tsutomu Nozoe, Masataka Oyama
  • Publication number: 20200251718
    Abstract: A positive electrode material for lithium-ion secondary batteries includes a granulated body in which a volume of pores having a pore size of 2 nm to 100 nm calculated from a cumulative pore volume distribution is 0.1 cm3/g or higher and 0.2 cm3/g or lower and a ratio of a volume of pores having a pore size of 20 nm to 70 nm is 65% or higher with respect to 100% of the volume of pores having a pore size of 2 nm to 100 nm.
    Type: Application
    Filed: September 20, 2019
    Publication date: August 6, 2020
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Tsutomu NOZOE, Toyomasa NAKANO
  • Publication number: 20200067093
    Abstract: A cathode material for a lithium ion secondary battery including agglomerated particles formed by agglomeration of a plurality of primary particles of a cathode active material which are coated with a carbonaceous film, in which an amount of carbon per a crystallite diameter of the cathode active material is 0.008% by mass/nm or more and 0.050% by mass/nm or less, and a peak intensity ratio (ID/IG) between a D band and a G band in a Raman spectrum obtained by Raman spectrometry is 0.85 or more and 1.15 or less. The cathode active material is represented by LixAyDzPO4, where A represents at least one element selected from the group consisting of Co, Mn, Ni, Fe, Cu, and Cr, 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, 0.9<x<1.1, 0<y?1, 0?z<1, and 0.9<y+z<1.1.
    Type: Application
    Filed: February 22, 2019
    Publication date: February 27, 2020
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Ryuuta YAMAYA, Tsutomu NOZOE
  • Publication number: 20200067082
    Abstract: A method of producing a positive electrode material for lithium-ion secondary batteries, which includes a pyrolyzed carbon coating, the method including a heat treatment step of thermally decomposing an organic compound using a rotary kiln to form a pyrolyzed carbon coating, wherein the organic compound is a carbon source that forms the pyrolyzed carbon coating of a positive electrode material.
    Type: Application
    Filed: August 19, 2019
    Publication date: February 27, 2020
    Inventors: Tsutomu NOZOE, Ryuuta YAMAYA
  • Publication number: 20190305362
    Abstract: An electrode material for a lithium ion secondary battery of the present invention is an electrode material for a lithium ion secondary battery containing a granulated body which is generated from primary particles, wherein the primary particles include an olivine-type electrode active material and a carbonaceous film that coats a surface of the olivine-type electrode active material, in which an average particle diameter of the primary particles is 30 nm or more and 500 nm or less, an average particle diameter of the granulated body is 0.5 ?m or more and 60 ?m or less, a tensile strength ? of the granulated body is 4 MPa or more, and a brittleness of the granulated body that is defined as a ratio (?/b) of the tensile strength ? of the granulated body to a compression constant b of the granulated body is 0.2 or more.
    Type: Application
    Filed: September 24, 2018
    Publication date: October 3, 2019
    Inventors: Tsutomu NOZOE, Ryuuta YAMAYA
  • Publication number: 20190305363
    Abstract: An electrode material for a lithium ion secondary battery of the present invention is an electrode material for a lithium ion secondary battery, which comprises a mixture of an oxide-based electrode active material and a granulated body generated from primary particles, wherein the primary particles include an olivine-type electrode active material represented by General Formula LixAyDzPO4 and a carbonaceous film that coats a surface of the olivine-type electrode active material, and wherein an average particle diameter of the primary particles is 30 nm or more and 500 nm or less, an average particle diameter of the granulated body is 0.5 ?m or more and 60 ?m or less, a tensile strength ? of the granulated body is 4 MPa or more, and a brittleness of the granulated body that is defined as a ratio (?/b) of the tensile strength ? of the granulated body to a compression constant b of the granulated body is 0.2 or more.
    Type: Application
    Filed: September 24, 2018
    Publication date: October 3, 2019
    Inventors: Tsutomu NOZOE, Ryuuta YAMAYA
  • Publication number: 20190267623
    Abstract: A cathode material for a lithium ion secondary battery enabling diffusion of lithium ions in a two-dimensional direction or a three-dimensional direction in crystals. The cathode material for the lithium ion secondary battery is formed by coating a surface of a central particle represented by General Formula LixFe1-y-zAyMzPO4 with a carbonaceous film, in which a content of a carbon atom is 0.3% by mass or more and 3.4% by mass or less, and, in a Moessbauer spectrum obtained by Moessbauer spectroscopy, when an area intensity of a spectrum having an isomer shift value in a range of 1.0 mm/sec or more and 1.4 mm/sec or less is represented by ?, and an area intensity of a spectrum having an isomer shift value in a range of 0.3 mm/sec or more and 0.7 mm/sec or less is represented by ?, {?/(?+?)×(1-y-z)} is 0.01 or more and 0.1 or less.
    Type: Application
    Filed: September 27, 2018
    Publication date: August 29, 2019
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Tsutomu NOZOE, Ryuuta YAMAYA
  • Patent number: 9487697
    Abstract: A composite wavelength conversion powder and a resin composition containing a composite wavelength conversion powder which have high utilization efficiency of light and high utilization efficiency of a constituent material, and are able to make highly efficient light emission and high reliability compatible are provided. The composite wavelength conversion powder is formed by dispersing phosphor particles having a refractive index of 1.6 or more in matrix particles containing fine magnesium fluoride particles or fine calcium fluoride particles.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: November 8, 2016
    Assignee: Sumitomo Osaka Cement Co., Ltd.
    Inventors: Toru Kinoshita, Tsutomu Nozoe
  • Publication number: 20150299566
    Abstract: A composite wavelength conversion powder and a resin composition containing a composite wavelength conversion powder which have high utilization efficiency of light and high utilization efficiency of a constituent material, and are able to make highly efficient light emission and high reliability compatible are provided. The composite wavelength conversion powder is formed by dispersing phosphor particles having a refractive index of 1.6 or more in matrix particles containing fine magnesium fluoride particles or fine calcium fluoride particles.
    Type: Application
    Filed: September 19, 2013
    Publication date: October 22, 2015
    Inventors: Toru Kinoshita, Tsutomu Nozoe