Patents Assigned to DENKA COMPANY LIMITED
  • Publication number: 20240190639
    Abstract: A method for producing a packaging body of the present invention includes a production step of producing a metal oxide powder, and a sealing step of placing the metal oxide powder in a bag that is filled with at least one gas selected from the group consisting of a noble gas, nitrogen gas, oxygen gas, and dry air, followed by sealing the bag, the metal oxide powder being a silica powder or a magnesia powder, the bag having a moisture permeability as measured according to JIS Z 0222-1959 of 0.30 g/(m2·day) or less.
    Type: Application
    Filed: March 11, 2022
    Publication date: June 13, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Hiroyuki SHIOTSUKI, Teruhiro AIKYO, Takashi FUKUDA
  • Patent number: 12006459
    Abstract: A phosphor powder of the present invention is a phosphor powder which contains an inorganic compound in which Eu as an activator is solid-soluted in a crystal represented by Ba26Si51O2N84 or in an inorganic crystal having the same crystal structure as the crystal represented by Ba26Si51O2N84, and which is constituted such that in an emission spectrum obtained by irradiating the phosphor powder with excitation light having a wavelength of 450 nm, when a luminescence intensity at a peak wavelength in a range of equal to or more than 750 nm and equal to or less than 950 nm is P0, and when a luminescence intensity at a peak wavelength in a range of equal to or more than 520 nm and equal to or less than 600 nm is P1, 0.01?P1/P0?0.12 is satisfied by P0 and P1.
    Type: Grant
    Filed: August 10, 2021
    Date of Patent: June 11, 2024
    Assignee: DENKA COMPANY LIMITED
    Inventors: Hiroki Banno, Hiroaki Toyoshima
  • Publication number: 20240182618
    Abstract: A chloroprene polymer having a structural unit derived from chloroprene and a structural unit derived from an unsaturated nitrile, in which the chloroprene polymer has a peak top at 5.80 to 6.00 ppm in a 1H-NMR spectrum as measured in a deuterochloroform solvent, in the 1H-NMR spectrum, a peak area ratio A/B of a peak area A at 5.80 to 6.00 ppm and a peak area B at 4.05 to 6.20 ppm is more than 1.1/100 and 2.3/100 or less, and a content of the structural unit derived from an unsaturated nitrile is more than 0% by mass and 23% by mass or less.
    Type: Application
    Filed: March 7, 2022
    Publication date: June 6, 2024
    Applicant: Denka Company Limited
    Inventors: Wataru NISHINO, Suguru ONUKI, Ryotaro ANDO
  • Publication number: 20240182318
    Abstract: A metal oxide powder in which the metal is other than uranium, iron and titanium, and, in the metal oxide powder, the content rate of uranium is 1.0 ppb by mass or less, the content rate of iron is 100 ppm by mass or less in terms of Fe2O3, the content rate of titanium in terms of TiO2 oxide is 8 ppm by mass or less. Included is a method of producing a metal oxide powder which removes impurities from a metal oxide powder so that a metal oxide powder having a high purity can be obtained, and a metal oxide powder produced according to the method.
    Type: Application
    Filed: March 22, 2022
    Publication date: June 6, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Takaaki MINAMIKAWA, Hiroyuki SHIOTSUKI, Koji MIYAZAKI
  • Publication number: 20240180094
    Abstract: Disclosed is an agent for increasing the expression of a stress response gene in a plant, the agent containing a humic acid.
    Type: Application
    Filed: February 25, 2022
    Publication date: June 6, 2024
    Applicants: DENKA COMPANY LIMITED, TOHOKU UNIVERSITY
    Inventors: Takashi OKAWA, Kazuma HONDA, Toju IINO, Kazuhisa KATO
  • Publication number: 20240181039
    Abstract: An influenza vaccine composition to be intranasally administered, including an influenza antigen to which TGDK is linked via a chemical bond.
    Type: Application
    Filed: March 29, 2022
    Publication date: June 6, 2024
    Applicants: DENKA COMPANY LIMITED, NATIONAL UNIVERSITY CORPORATION KUMAMOTO UNIVERSITY
    Inventors: Ryotaro MITSUMATA, Shogo MISUMI, Nagisa NAKATA, Naoki KISHIMOTO
  • Patent number: 12000584
    Abstract: A light-emitting device has a light-emitting substrate having a circuit pattern layer over one surface of an insulating substrate and a plurality of light-emitting elements bonded to the circuit pattern layer, the light-emitting substrate has a phosphor layer on one surface side of the insulating substrate and includes a phosphor wherein the light emission peak wavelength is in a visible light region when the light emission of at least one of the light-emitting elements is used as excitation light, the elements have a plurality of serial bodies wherein the light-emitting elements are connected in series and arranged in parallel from an inner to an outer side of the substrate surface when the substrate surface of the light-emitting substrate is viewed from a top surface, and anode sides of the serial bodies are arranged on the same side of either the inner or the outer side of the substrate surface.
    Type: Grant
    Filed: August 5, 2021
    Date of Patent: June 4, 2024
    Assignee: DENKA COMPANY LIMITED
    Inventor: Masahiro Konishi
  • Publication number: 20240174908
    Abstract: A boron nitride powder that is an aggregate of boron nitride particles, wherein the boron nitride powder has a BET specific surface area of 4.6 m2/g or more, and an average pore diameter of 0.65 ?m or less. A resin composition containing: the boron nitride powder, and a resin.
    Type: Application
    Filed: March 22, 2022
    Publication date: May 30, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Yusuke SASAKI, Kenji MIYATA, Kei KUBOBUCHI, Tomonari MIYAZAKI
  • Publication number: 20240174529
    Abstract: A method for producing a barium titanate-based powder, the method including: step a of spraying a raw material including a barium titanate-based compound into a high-temperature field heated to a temperature equal to or higher than a melting point of the compound to form barium titanate-based particles; and step b of heating a powder including the barium titanate-based particles formed in step a at 700 to 1300° C.
    Type: Application
    Filed: February 28, 2022
    Publication date: May 30, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Kazuki HIROTA, Junya NITTA, Yasutaka OSHIMA, Takahisa MIZUMOTO, Hiroaki YOSHIGAI
  • Publication number: 20240175095
    Abstract: The present invention provides a method for amplifying, in a reaction solution, at least one target gene having a GC content of at least 60%, wherein the method contains a step of amplifying a specific base sequence in a target gene by using a primer set consisting of a first primer and a second primer for target gene amplification, and wherein one primer in the primer set is added to the reaction solution at a molar ratio higher than the other primer and neither primer is a hot start primer that contains an inactivating chemical modification that is restored by an action of an activating enzyme.
    Type: Application
    Filed: March 24, 2022
    Publication date: May 30, 2024
    Applicants: Denka Company Limited, Toho University
    Inventors: Kazuhiro TATEDA, Yuya MIYATAKE
  • Publication number: 20240174520
    Abstract: A spherical inorganic powder having, in a particle size frequency distribution, a first peak having a local maximum value in a particle size region from 0.1 ?m or larger to 0.6 ?m or smaller, and a second peak having a local maximum value in a particle size region from 1.5 ?m or larger to 5.0 ?m or smaller, wherein a value of a ratio of a frequency at the local maximum value of the second peak to a frequency at the local maximum value of the first peak is 1.5 or higher and lower than 10.0.
    Type: Application
    Filed: March 24, 2022
    Publication date: May 30, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Takaaki MINAMIKAWA, Akihiko YAMAMOTO, Takashi FUKUDA
  • Publication number: 20240174893
    Abstract: An adhesive composition including a polymerizable monomer having a (meth)acryloyl group; a radical polymerization initiator; and a polymer particle having a property of being swollen by an organic solvent, in which in a particle size distribution of secondary particles which are aggregates of the polymer particles, the secondary particles being in the adhesive composition and the particle size distribution being determined by a laser diffraction/scattering method, a proportion of secondary particles having a diameter of 1 ?m or more and 200 ?m or less is 30% by volume or more.
    Type: Application
    Filed: March 23, 2022
    Publication date: May 30, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Yusuke TAKAHASHI, Chiaki TAKANO, Hiroyuki KURIMURA
  • Publication number: 20240175633
    Abstract: An aspect of the present disclosure provides a setter for ceramic firing, in which the setter is composed of a boron nitride sintered plate having a plurality of pores, a porosity is 8 vol % or higher, and a proportion of pores having a pore diameter of 0.2 to 0.9 ?m is 76% to 95% of all pores, the pore diameter being measured with a mercury porosimeter.
    Type: Application
    Filed: March 28, 2022
    Publication date: May 30, 2024
    Applicant: Denka Company Limited
    Inventor: Shuhei NONAKA
  • Patent number: 11993671
    Abstract: A chloroprene-unsaturated nitrile copolymer having 3 to 20% by mass of a structural unit derived from an unsaturated nitrile monomer, in which the chloroprene-unsaturated nitrile copolymer has a peak at 5.80 to 6.00 ppm in a 1H-NMR spectrum as measured in a deuterochloroform solvent, and a ratio (A/B) of a peak area (A) at 5.80 to 6.00 ppm and a peak area (B) at 4.05 to 6.20 ppm is 0.6/100 to 1.1/100.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: May 28, 2024
    Assignee: Denka Company Limited
    Inventors: Wataru Nishino, Suguru Onuki, Atsunori Kondo, Yuhei Ishigaki, Naoki Kobayashi
  • Publication number: 20240167651
    Abstract: A light source unit includes a light emitting module which has a printed wiring board and a plurality of light emitting diode elements mounted on the board, and a light-transmissive light distribution adjustment portion which covers the light emitting module, in which the board has a fluorescent layer containing fluorescent particles over a surface on which the light emitting diode elements are mounted, and the light distribution adjustment portion includes a portion having a convex shape outward from the board side, is spaced apart from the plurality of light emitting diode elements and from the fluorescent layer, commonly covers the plurality of light emitting diode elements and the fluorescent layer, and diffuses and distributes emission light from the light emitting diode elements and luminescence from the fluorescent layer.
    Type: Application
    Filed: March 11, 2022
    Publication date: May 23, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventor: Masahiro KONISHI
  • Publication number: 20240167103
    Abstract: Disclosed is a method for identifying causative bacteria of sepsis, the method comprising: a step of performing a PCR method using a sample collected from a subject and a combination of sets of primers each specific to the full-length or a partial region of each of gyrB gene of Escherichia coli, nuc gene of Staphylococcus aureus, atlE gene of Staphylococcus epidermidis, gyrB gene of Klebsiella pneumoniae and rpoB gene of Enterococcus spp.; and a step of detecting the presence or absence of amplification of the full-length or the partial region of each of the genes by using a combination of probes each specific to DNA of the full-length or the partial region.
    Type: Application
    Filed: March 24, 2022
    Publication date: May 23, 2024
    Applicants: Denka Company Limited, Toho University
    Inventors: Kazuhiro Tateda, Yuya Miyatake, Kentarou Sakai, Mizuho Higuchi, Kazuaki Yamauchi
  • Publication number: 20240166552
    Abstract: A spherical inorganic oxide powder wherein a volume-based cumulative 50% diameter D50 is 4-55 ?m; and in a cross-section of a cured body containing an epoxy resin and the spherical inorganic oxide powder at a mass ratio of 2:1, when a total of 5000 particles with a maximum diameter of 51 ?m or larger are observed in a field of view at 100× magnification using a scanning electron microscope, a total number of air bubbles having a maximum diameter of 1 ?m or larger and smaller than 10 ?m is 40 or fewer and a total number of air bubbles having a maximum diameter of 10 ?m or larger is 30 or fewer.
    Type: Application
    Filed: March 23, 2022
    Publication date: May 23, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Yasuaki HATAYAMA, Takashi FUKUDA
  • Publication number: 20240166529
    Abstract: A method for producing a barium titanate-based powder, the method including: step a of spraying a raw material including a barium titanate-based compound into a high-temperature field heated to a temperature equal to or higher than a melting point of the compound to form barium titanate-based particles; step b of calcining a powder including the barium titanate-based particles formed in step a; and step c of washing a calcination product obtained in step b with a water-based washing liquid.
    Type: Application
    Filed: February 28, 2022
    Publication date: May 23, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Kazuki HIROTA, Yasutaka OSHIMA, Yuzo NAKAMURA, Takahisa MIZUMOTO, Hiroaki YOSHIGAI
  • Patent number: 11987032
    Abstract: A resin sheet having hair-like bodies arranged regularly on at least one surface of a base layer containing a thermoplastic resin, the surface with the hair-like bodies having a coefficient of friction, as measured according to KES, of 0.5 or more and 1.0 or less, a deviation of the coefficient of friction, as measured by KES, of 0.010 or more and 0.025 or less, and a deviation of roughness, as measured by KES, of 0.2 or more and 1.5 or less.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: May 21, 2024
    Assignee: DENKA COMPANY LIMITED
    Inventors: Hiroko Toyama, Keishi Maeda
  • Publication number: 20240156943
    Abstract: An influenza vaccine that has high immunogenicity in children and elderly people and has a higher efficacy than conventional split vaccines. An influenza vaccine composition to be administered to children and/or elderly people, including, as a virus antigen, inactivated whole particles subjected to inactivation treatment with beta-propiolactone.
    Type: Application
    Filed: March 29, 2022
    Publication date: May 16, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Ryotaro MITSUMATA, Tomohiro NARAHARA