Patents by Inventor Takashi Arimura

Takashi Arimura 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: 20240132778
    Abstract: A phosphor including a crystal phase of an aluminate compound containing a metal element M constituting a luminescent center ion and aluminum, in which the crystal phase contains crystallites, and an average size of the crystallites is 2 to 100 ?m.
    Type: Application
    Filed: January 26, 2022
    Publication date: April 25, 2024
    Applicant: Sumitomo Chemical Company, Limited
    Inventors: Takashi ARIMURA, Masaki KANNAMI, Shota NAITO, Kentaro IWASAKI, Shinichi SASAKI
  • Publication number: 20240101895
    Abstract: A method for producing a phosphor having a core-shell structure that includes: a core part formed of a crystal phase of an inorganic compound containing a metal element M constituting a luminescent center ion and aluminum; and a shell part containing at least one element selected from the group consisting of boron and silicon and formed on at least a portion of a surface of the core part, the method including: mixing a raw material of the crystal phase and a raw material of the shell part; and heating the obtained mixture at a temperature at which the raw material of the shell part is liquefied, but a host crystal of a phosphor to be obtained is maintained, in which the raw material of the crystal phase contains a raw material compound having D50 in a particle diameter distribution of 0.2 to 90 ?m and containing aluminum.
    Type: Application
    Filed: January 26, 2022
    Publication date: March 28, 2024
    Applicant: Sumitomo Chemical Company, Limited
    Inventors: Masaki KANNAMI, Takashi ARIMURA, Shota NAITO, Kentaro IWASAKI, Shinichi SASAKI
  • Publication number: 20240047663
    Abstract: This lithium-containing transition metal composite oxide includes secondary particles that are aggregates of primary particles into or from which lithium ions are dopable or dedopable, and satisfies the following conditions: (1) the lithium-containing transition metal composite oxide is represented by Formula (I), Li[Lix(Ni(1?y?z?w)CoyMnzMw)1?x]O2 ??(I) (2) from X-ray photoelectron spectroscopy, a specific ? is calculated for each of the surface of the secondary particle and the inside of the secondary particle, and when the ? value of the surface of the secondary particle is referred to as ?1 and the ? value of the inside of the secondary particle is referred to as ?2, ?1 and ?2 satisfy the condition of Formula (II). 0.3??1/?2?1.
    Type: Application
    Filed: October 19, 2023
    Publication date: February 8, 2024
    Inventors: Takashi ARIMURA, Kenji TAKAMORI, Jun-Ichi KAGEURA, Yuichi SATO, Yusuke MAEDA
  • Patent number: 11855247
    Abstract: This lithium-containing transition metal composite oxide includes secondary particles that are aggregates of primary particles into or from which lithium ions are dopable or dedopable, and satisfies the following conditions: (1) the lithium-containing transition metal composite oxide is represented by Formula (I), Li[Lix(Ni(1-y-z-w)CoyMnzMw)1-x]O2??(I) (2) from X-ray photoelectron spectroscopy, a specific ? is calculated for each of the surface of the secondary particle and the inside of the secondary particle, and when the ? value of the surface of the secondary particle is referred to as ?1 and the ? value of the inside of the secondary particle is referred to as ?2, ?1 and ?2 satisfy the condition of Formula (II). 0.3??1/?2?1.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: December 26, 2023
    Assignees: SUMITOMO CHEMICAL COMPANY, LIMITED, TANAKA CHEMICAL CORPORATION
    Inventors: Takashi Arimura, Kenji Takamori, Jun-Ichi Kageura, Yuichi Sato, Yusuke Maeda
  • Publication number: 20230292534
    Abstract: Heat resistance is improved. A photoelectric conversion element 10 includes an anode 12, a cathode 16, and an active layer 14 provided between the anode and the cathode, in which the active layer contains at least one p-type semiconductor material and at least two n-type semiconductor materials, and a dispersive energy Hansen solubility parameter ?D(P) of the at least one p-type semiconductor material and a first dispersive energy Hansen solubility parameter ?D(Ni) and a second dispersive energy Hansen solubility parameter ?D(Nii) of the at least two n-type semiconductor materials satisfy the following requirements (i) and (ii): 2.1 MPa0.5<|?D(P)??D(Ni)|+|?D(Ni)??D(Nii)|<4.0 MPa0.5??Requirement (i): 0.8 MPa0.5<|?D(P)??D(Ni)| and 0.2 MPa0.
    Type: Application
    Filed: July 9, 2021
    Publication date: September 14, 2023
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Mayuko OGASAWARA, Akiko KISHIDA, Takashi ARIMURA, Miki KATAKURA
  • Publication number: 20230128381
    Abstract: A coated particle having excellent thermal expansion control and electrical insulation properties includes a core of a first inorganic compound containing a metal or semimetal element P; and a shell of a second inorganic compound containing a metal or semimetal element Q. The first inorganic compound satisfies 1, and the coated particles satisfy 2 and 3. 1: |dA(T)/dT| is ?10 ppm/°C at T1 of -200° C. to 1,200° C. A is (an a-axis lattice constant of a crystal in the first inorganic compound)/(a c-axis lattice constant of a crystal in the first inorganic compound). 2: in XPS of a surface of each of the coated particles, a ratio of a number of atoms of Q contained in the shell to a number of atoms of P contained in the core t is 45 to 300. 3: an average particle diameter of each coated particle is 0.1 to 100 µm.
    Type: Application
    Filed: April 7, 2021
    Publication date: April 27, 2023
    Inventors: Shinichi SASAKI, Atsunori DOI, Takashi ARIMURA, Satoshi SHIMANO
  • Publication number: 20230109156
    Abstract: This particle contains at least one titanium compound crystal grain, and satisfies requirements 1 and 2. Requirement 1: |dA(T)/dT| of the titanium compound crystal grain satisfies 10 ppm/° C. or more at at least one temperature T1 in a range of ?200° C. to 1200° C. A is (a-axis (shorter axis) lattice constant of the titanium compound crystal grain)/(c-axis (longer axis) lattice constant of the titanium compound crystal grain), and each of the lattice constants is obtained by X-ray diffractometry of the titanium compound crystal grain. Requirement 2: the particle contains a pore, and in a cross section of the particle, the pore has an average equivalent circle diameter of 0.8 ?m or more and 30 ?m or less, and the titanium compound crystal grain has an average equivalent circle diameter of 1 ?m or more and 70 ?m or less.
    Type: Application
    Filed: March 22, 2021
    Publication date: April 6, 2023
    Inventors: Takashi ARIMURA, Yoji MATSUO, Takuya MATSUNAGA, Atsunori DOI, Satoshi SHIMANO
  • Patent number: 11621299
    Abstract: The present disclosure relates to a composition including a light-emitting perovskite compound (1) which includes constituent components A, B, and X, and a silazane or modified product thereof (2).
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: April 4, 2023
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Shota Naito, Takashi Arimura, Yoshiaki Sakatani
  • Patent number: 11437618
    Abstract: A positive electrode active material for lithium secondary batteries which is able to doped/undoped with lithium ions and contains at least Ni, in which a ratio P/Q (atom %/mass %) of a concentration P (atom %) of sulfur atoms being present in a surface of the positive electrode active material to a concentration Q (mass %) of sulfuric acid radicals being present in the whole positive electrode active material is more than 0.8 and less than 5.0, and the Q (mass %) is 0.01 or more and 2.0 or less.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: September 6, 2022
    Assignees: SUMITOMO CHEMICAL COMPANY, LIMITED, TANAKA CHEMICAL CORPORATION
    Inventors: Takashi Arimura, Jun-ichi Kageura, Kenji Takamori, Kimiyasu Nakao, Daisuke Yamashita, Yusuke Maeda
  • Patent number: 11417879
    Abstract: The present invention relates to a positive electrode active material for a lithium secondary battery, including a lithium composite metal oxide in a form of secondary particles formed by aggregation of primary particles, wherein the secondary particles have voids in interior thereof and a number of the voids with cross section thereof present per 1 ?m2 of cross section of the secondary particles is 0.3 or more and 15 or less.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: August 16, 2022
    Assignees: SUMITOMO CHEMICAL COMPANY, LIMITED, TANAKA CHEMICAL CORPORATION
    Inventors: Kenji Takamori, Takashi Arimura, Yasutaka Iida
  • Publication number: 20220193648
    Abstract: An inorganic porous carrier including a linker of formula (1) and having mode diameter of 0.04 ?m to 1 ?m in a pore distribution and the density of voids having an opening area of 0.0025 ?m2 or more of 12 to 30 voids/?m2 [a bond * represents a linkage to the oxygen atom in a silanol group of an inorganic porous substance; n is an integer; R represents an alkyl group containing 3 to 10 carbon atoms which may optionally have a substituent such as an alkoxy group; and L represents a single bond; an alkylene group of 1 to 20 carbon atoms; or an alkylene group containing 2 to 20 carbon atoms containing —CH2-Q-CH2— group wherein Q selected from a group consisting of —O— etc. is inserted into at least one of —CH2—CH2— group constituting the alkylene group]; and a method for preparing a nucleic acid using the same.
    Type: Application
    Filed: February 28, 2020
    Publication date: June 23, 2022
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takashi ARIMURA, Masaki KITAHARA, Takeshi YOSHIOKA, Takashi HARA
  • Publication number: 20220177319
    Abstract: An inorganic porous carrier that can be used to increase the purity of nucleic acid in a production thereof, and that comprises a linker of formula (1), wherein a Survival Bone Rate (SBR) value is 5.0% or more. In the formula (1), a bond * represents a linkage of an inorganic porous substance to the oxygen atom of a silanol group; n is an integer of 1 etc.; R represents independently of each other an alkyl group containing 3 to 10 carbon atoms which may have a substituent such as an alkoxy group etc.; and L represents a single bond; an alkylene group of 1 to 20 carbon atoms; or an alkylene group containing 2 to 20 carbon atoms which contains —CH2-Q-CH2— group wherein any group Q selected from a group consisting of —O— etc. is inserted into at least one of —CH2—CH2— group constituting the alkylene group.
    Type: Application
    Filed: February 28, 2020
    Publication date: June 9, 2022
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Syusaku HARA, Masaki KITAHARA, Takashi HARA, Takashi ARIMURA
  • Publication number: 20220106347
    Abstract: An inorganic porous carrier including a linker of formula (1), wherein a mode diameter in a pore distribution is 0.04 ?m to 1 ?m, and a predetermined cumulative pore volume ratio is 30% or less [a bond * represents a linkage to the oxygen atom of a silanol group in an inorganic porous substance; n is an integer; R represents independently of each other an alkyl group containing 3 to 10 carbon atoms which may optionally have a substituent such as an alkoxy group; and L represents a single bond; an alkylene group of 1 to 20 carbon atoms; or an alkylene group containing 2 to 20 carbon atoms which contains —CH2-Q-CH2— group wherein any group Q selected from a group consisting of —O— etc. is inserted into at least one of —CH2—CH2— group constituting the alkylene group]; and a method for preparing a nucleic acid using the same.
    Type: Application
    Filed: February 28, 2020
    Publication date: April 7, 2022
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Masaki KITAHARA, Takeshi YOSHIOKA, Takashi HARA, Takashi ARIMURA, Takeshi ISHIYAMA, Hiroshi KISHIDA
  • Publication number: 20210388490
    Abstract: The present disclosure relates to a laminated body including at least a base material layer containing at least a flexible base material and an inorganic thin film layer, in which a distribution curve of IO2/ISi has at least one maximum value (IO2/ISi)maxBD in a region BD between a depth B and a depth D, where ionic strengths of Si?, C?, and O2? are each denoted as ISi, IC, and IO2 in a depth profile measured from a surface of the laminated body on an inorganic thin film layer side in a thickness direction using a time-of-flight secondary ion mass spectrometer (TOF-SIMS), an average ionic strength in a region A1 in which an absolute value of a coefficient of variation of an ionic strength value on a base material layer side is within 5% is denoted as ICA1, a depth that is closest to the region A1 on a surface side of the inorganic thin film layer with respect to the region A1 and exhibits an ionic strength to be 0.
    Type: Application
    Filed: October 18, 2019
    Publication date: December 16, 2021
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Shohei YAMAKAWA, Yasuhiro YAMASHITA, Miho OZEKI, Hidenori HANAOKA, Takashi ARIMURA
  • Patent number: 11011741
    Abstract: A positive electrode active material for lithium secondary batteries, includes: a lithium composite metal compound containing secondary particles formed by aggregation of primary particles; and a lithium-containing tungsten oxide, in which the lithium-containing tungsten oxide is present at least in interparticle spaces of the primary particles, and in a pore distribution of the positive electrode active material for lithium secondary batteries measured by a mercury intrusion method, a surface area of pores having a pore diameter in a range of 10 nm or more to 200 nm or less is 0.4 m2/g or more and 3.0 m2/g or less.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: May 18, 2021
    Assignees: SUMITOMO CHEMICAL COMPANY, LIMITED, TANAKA CHEMICAL CORPORATION
    Inventors: Hiroyuki Kurita, Takashi Arimura, Yusuke Maeda, Kayo Matsumoto
  • Publication number: 20210043917
    Abstract: A positive electrode active material for lithium secondary batteries, includes: a lithium composite metal compound containing secondary particles formed by aggregation of primary particles; and a lithium-containing tungsten oxide, in which the lithium-containing tungsten oxide is present at least in interparticle spaces of the primary particles, and in a pore distribution of the positive electrode active material for lithium secondary batteries measured by a mercury intrusion method, a surface area of pores having a pore diameter in a range of 10 nm or more to 200 nm or less is 0.4 m2/g or more and 3.0 m2/g or less.
    Type: Application
    Filed: November 30, 2017
    Publication date: February 11, 2021
    Inventors: Hiroyuki KURITA, Takashi ARIMURA, Yusuke MAEDA, Kayo MATSUMOTO
  • Publication number: 20200411854
    Abstract: The present invention relates to a positive electrode active material for a lithium secondary battery, including a lithium composite metal oxide in a form of secondary particles formed by aggregation of primary particles, wherein the secondary particles have voids in interior thereof and a number of the voids with cross section thereof present per 1 ?m2 of cross section of the secondary particles is 0.3 or more and 15 or less.
    Type: Application
    Filed: August 31, 2017
    Publication date: December 31, 2020
    Inventors: Kenji TAKAMORI, Takashi ARIMURA, Yasutaka IIDA
  • Publication number: 20200303734
    Abstract: This lithium-containing transition metal composite oxide includes secondary particles that are aggregates of primary particles into or from which lithium ions are dopable or dedopable, and satisfies the following conditions: (1) the lithium-containing transition metal composite oxide is represented by Formula (I), Li[Lix(Ni(1-y-z-w)CoyMnzMw)1-x]O2??(I) (2) from X-ray photoelectron spectroscopy, a specific ? is calculated for each of the surface of the secondary particle and the inside of the secondary particle, and when the ? value of the surface of the secondary particle is referred to as ?1 and the ? value of the inside of the secondary particle is referred to as ?2, ?1 and ?2 satisfy the condition of Formula (II). 0.3??1/?2?1.
    Type: Application
    Filed: November 30, 2018
    Publication date: September 24, 2020
    Inventors: Takashi ARIMURA, Kenji TAKAMORI, Jun-Ichi KAGEURA, Yuichi SATO, Yusuke MAEDA
  • Publication number: 20200291513
    Abstract: A laminated film including: a substrate; and a thin film layer stacked on at least one surface of the substrate, the thin film layer containing silicon atoms, oxygen atoms, and carbon atoms, the thin film layer having at least three extrema, a difference between a maximum value of local maxima and a minimum value of the local maxima of 14 at % or less, and a maximum value of 23 at % to 33 at % in a carbon distribution curve that represents a relationship between a thickness-wise distance in the thin film layer from a surface of the thin film layer and a proportion of the number of carbon atoms (atomic proportion of carbon) to a total number of silicon atoms, oxygen atoms, and carbon atoms contained in the thin film layer at a point positioned away from the surface by the distance, and the thin film layer including at least one discontinuous region that satisfies a relationship of formulae (1) to (3), 3 at %?a?b??(1) 3 at %?b?c??(2) 0.5<(a?c)/dx??(3).
    Type: Application
    Filed: August 21, 2018
    Publication date: September 17, 2020
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Masami MAKIDERA, Takashi ARIMURA, Yasuhiro YAMASHITA, Hidenori HANAOKA
  • Publication number: 20200259118
    Abstract: A laminated film including: a substrate; and a thin film layer stacked on at least one surface of the substrate, the thin film layer containing silicon atoms, oxygen atoms, and carbon atoms, the thin film layer having at least three extrema, and a difference between a maximum value of local maxima and a minimum value of the local maxima of 14 at % or less in a carbon distribution curve that represents a relationship between a thickness-wise distance in the thin film layer from a surface of the thin film layer and a proportion of the number of carbon atoms (atomic proportion of carbon) to a total number of silicon atoms, oxygen atoms, and carbon atoms contained in the thin film layer at a point positioned away from the surface by the distance, and the thin film layer including at least one discontinuous region that satisfies a relationship of formulae (1) to (3), 3 at %?a?b ??(1) 3 at %?b?c ??(2) 0.5<(a?c)/dx ??(3).
    Type: Application
    Filed: August 21, 2018
    Publication date: August 13, 2020
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Masami MAKIDERA, Takashi ARIMURA, Yasuhiro YAMASHITA, Hidenori HANAOKA