Patents Assigned to DENKA COMPANY LIMITED
  • Patent number: 11933059
    Abstract: A method for reinforcing a concrete structure so as to have high substrate visibility and sufficient reinforcing performance. A fiber sheet for reinforcing a concrete structure, the sheet including: a framework in which a filament-based, multi-axial mesh sheet and a matrix resin are integrated, wherein the multi-axial mesh sheet has a base weight amount in a range of 500 g/m2 to 1000 g/m2.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: March 19, 2024
    Assignee: DENKA COMPANY LIMITED
    Inventors: Tomohiro Yamashita, Hiroaki Nishimura
  • Patent number: 11932792
    Abstract: A red phosphor represented by general formula: MSiAlN3, wherein M is at least one or more elements selected from Mg, Ca, Sr and Ba, and is partially replaced with Eu and has, as a host crystal, a crystal structure identical to that of a CaAlSiN3 crystal phase, and the phosphor has a bulk density of 0.70 g/cm3 or more and 2.30 g/cm3 or less. There is also provided a light-emitting element including the red phosphor and a semiconductor light-emitting element capable of exciting the red phosphor.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: March 19, 2024
    Assignee: DENKA COMPANY LIMITED
    Inventors: Yusuke Takeda, Tomohiro Nomiyama, Marina Takamura, Shintaro Watanabe
  • Publication number: 20240076485
    Abstract: A fiber for artificial hair with low thermal shrinkage, low luster, and excellent spinnability, structured by a resin composition containing a vinyl chloride-based resin and a maleimide-based copolymer, wherein: 50 to 99 mass % of the vinyl chloride-based resin is contained in 100 mass % of the resin composition; 1 to 50 mass % of the maleimide-based copolymer is contained in 100% of the resin composition; and when a total of an aromatic vinyl-based monomer unit, a cyanide vinyl-based monomer unit, an unsaturated acid anhydride monomer unit, and a maleimide-based monomer unit in the maleimide-based copolymer is 100 mass %, the maleimide-based copolymer has 5 to 30 mass % of the maleimide-based monomer unit.
    Type: Application
    Filed: March 8, 2022
    Publication date: March 7, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Takashi MURAOKA, Yuki SAGARA, Tatsuhiro MATSUBARA, Kohei NISHINO
  • Publication number: 20240076470
    Abstract: Provided are oxide composite particles to be mixed with a resin to obtain a resin composition having high thermal conductivity, low dielectric constant, and low dielectric loss tangent. The oxide composite particles containing silica and alumina, in which the oxide composite particles contain 40 to 85% by mass of an ?-cristobalite crystal phase, 5 to 50% by mass of an ?-alumina crystal phase, and 10% by mass or less of a mullite crystal phase, and an elemental ratio of aluminum to silicon (aluminum/silicon) as determined by X-ray photoelectron spectroscopy is 1.5 or more.
    Type: Application
    Filed: November 24, 2021
    Publication date: March 7, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Toshihiko TSUNEYOSHI, Motoharu FUKAZAWA
  • Publication number: 20240076502
    Abstract: Carbon black in which an oil absorption amount is 150 mL/100 g or more and 400 mL/100 g or less and a nickel content that is measured by induced coupled plasma-mass spectrometry is 50 ppb or less.
    Type: Application
    Filed: January 21, 2022
    Publication date: March 7, 2024
    Applicant: Denka Company Limited
    Inventors: Tetsuya ITO, Yusaku HARADA, Kosuke TANAKA, Tatsuya NAGAI
  • Publication number: 20240079598
    Abstract: Carbon black in which an oil absorption amount is 150 mL/100 g or more and 400 mL/100 g or less and an iron content that is measured by induced coupled plasma-mass spectrometry is 500 ppb or less.
    Type: Application
    Filed: January 21, 2022
    Publication date: March 7, 2024
    Applicant: Denka Company Limited
    Inventors: Tetsuya ITO, Yusaku HARADA, Kosuke TANAKA, Tatsuya NAGAI
  • Publication number: 20240076503
    Abstract: Carbon black in which an oil absorption amount is 150 mL/100 g or more and 400 mL/100 g or less and a cobalt content that is measured by induced coupled plasma-mass spectrometry is 20 ppb or less.
    Type: Application
    Filed: January 21, 2022
    Publication date: March 7, 2024
    Applicant: Denka Company Limited
    Inventors: Tetsuya ITO, Yusaku HARADA, Kosuke TANAKA, Tatsuya NAGAI
  • Patent number: 11920061
    Abstract: An adhesive sheet in which the adhesive strength of an adhesive layer to other adherends is low, adhesive layers can be firmly bonded to each other, the adhesive layers will not be destroyed even if the adhesive layers are peeled after having once been bonded, and sufficient bonding strength is obtained even if the adhesive layers are re-bonded. An adhesive sheet in which an intermediate layer containing methyl methacrylate-grafted natural rubber is provided on a substrate containing a vinyl chloride resin and a plasticizer, and an adhesive layer including an adhesive containing the plasticizer and a rubber component containing natural rubber and methyl methacrylate-grafted natural rubber is provided on the intermediate layer, wherein a degree of swelling of the rubber component with respect to the plasticizer is by a factor of 1.5 to 4.5.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: March 5, 2024
    Assignee: DENKA COMPANY LIMITED
    Inventor: Manabu Miura
  • Patent number: 11915921
    Abstract: An electron source according to the present disclosure includes a columnar portion made of a first material having an electron emission characteristic; and a tubular portion that is disposed to surround the columnar portion and made of a second material having a higher work function than the first material, wherein a hole that extends in a direction from one end face toward the other end face and has a substantially circular cross-sectional shape is formed in the tubular portion, and the columnar portion has a substantially triangular or substantially quadrangular cross-sectional shape and is fixed to the tubular portion in an abutting engagement with an inner surface of the hole.
    Type: Grant
    Filed: April 14, 2021
    Date of Patent: February 27, 2024
    Assignee: Denka Company Limited
    Inventors: Dai Tsukada, Hiromitsu Chatani, Daisuke Ishikawa
  • Patent number: 11912489
    Abstract: A plurality of heat dissipation substrates stacked on each other, intermediate sheets disposed under a lowermost heat dissipation substrate, on an uppermost heat dissipation substrate, and between heat dissipation substrates adjacent to each other, a drying agent disposed over or under the plurality of heat dissipation substrates, and a bag that seals the plurality of heat dissipation substrates, the plurality of intermediate sheets, and the drying agent.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: February 27, 2024
    Assignee: DENKA COMPANY LIMITED
    Inventors: Hiroaki Ota, Yosuke Ishihara, Daisuke Goto
  • Patent number: 11912011
    Abstract: One aspect of the present invention provides a composite sheet which comprises a nitride sintered body having a porous structure and a semi-cured product of a thermosetting resin composition impregnated into the nitride sintered body, the line roughness Rz specified by JIS B 0601:2013 of at least one main surface being 10 ?m or less.
    Type: Grant
    Filed: October 21, 2020
    Date of Patent: February 27, 2024
    Assignee: Denka Company Limited
    Inventors: Yoshitaka Minakata, Tomoya Yamaguchi, Saori Inoue
  • Patent number: 11915993
    Abstract: A two-pack curable composition set having: a first agent comprising an organopolysiloxane having a branched structure and having a vinyl group at least at an end or in a side chain, a thermally conductive filler, a silica powder, and a platinum catalyst, and having a viscosity at 25° C. at a shear rate of 10 s?1 of 20 to 150 Pa·s; and a second agent comprising an organopolysiloxane having a branched structure and having a vinyl group at least at an end or in a side chain, and a polydimethylsiloxane having a hydrosilyl group at least at an end or in a side chain, a thermally conductive filler, and a silica powder, and having a viscosity at 25° C. at a shear rate of 10 s?1 of 20 to 150 Pa·s.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: February 27, 2024
    Assignee: Denka Company Limited
    Inventor: Masahiro Kato
  • Publication number: 20240060970
    Abstract: Insoluble particles containing a granular carrier and an antibody to a target antigen carried on the granular carrier, no sugar chain being bonded to the heavy chain of the antibody.
    Type: Application
    Filed: December 22, 2021
    Publication date: February 22, 2024
    Applicant: Denka Company Limited
    Inventor: Masako Shimomoto
  • Publication number: 20240057540
    Abstract: Disclosed is a method for determining conditions for cultivating a plant body expressing a protein of interest or a peptide of interest in a 24-hour cycle in which a dark period and a light period are repeated alternately, including: a step of determining an optimum leaf temperature based on a capability to express a protein of interest or a peptide of interest; and a step of setting light and dark period leaf temperatures and light and dark period time lengths after a plant body is infected with a bacterium or a virus having a polynucleotide encoding the protein of interest or the peptide of interest so as to satisfy the following formula, the following formula being: Dark period leaf temperature (° C.)×Dark period time length (hour)+Light period leaf temperature (° C.)×Light period time length (hour)=Optimum leaf temperature (° C.)×24 (hour)±24.
    Type: Application
    Filed: January 11, 2022
    Publication date: February 22, 2024
    Applicant: Denka Company Limited
    Inventors: Yuki Wakabayashi, Teruaki Kakema
  • Publication number: 20240064895
    Abstract: A circuit board having electrodes has good thermal conductivity and excellent voltage resistance and a method of producing the same. The circuit board includes a first ceramic layer, a second ceramic layer laminated thereon, and a first metal layer between the ceramic layers. The circuit board has a metal layer existing zone between the ceramic layers, and a metal layer non-existing zone having no metal layer between the ceramic layers. The ceramic layers join in the metal layer non-existing zone, and the second ceramic layer is a porous boron nitride layer having voids filled with a thermosetting composition cured material. The method includes disposing a second ceramic sheet on a first laminate metal layer including a first ceramic layer and the first metal layer laminated thereon, and pressurizing under heating. The second ceramic sheet is a porous boron nitride sheet having voids filled with a thermosetting composition semi-cured material.
    Type: Application
    Filed: March 22, 2022
    Publication date: February 22, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Kenji MIYATA, Shohji IWAKIRI, Saori INOUE
  • Publication number: 20240059053
    Abstract: An electronic device packaging sheet including a substrate sheet having at least one substrate layer including: a thermoplastic resin (I); and a resin (II) which includes at least one copolymer selected from a (meth)acrylic acid alkyl ester copolymer (A) and a styrene-acrylonitrile copolymer (B) that have a weight-average molecular weight of 700,000-4,300,000. The substrate sheet has at least one substrate layer comprising the thermoplastic resin (I) at 70-99 mass % and the resin (II) at 1-30 mass %.
    Type: Application
    Filed: December 14, 2021
    Publication date: February 22, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Takeshi SAITO, Ikuka INODA, Ryosuke YANAKA
  • Patent number: 11904518
    Abstract: [Problem] The objective of the present invention is to provide a sheet expressing a good tactile sensation and a molded product thereof. [Solution] A sheet expressing a good tactile sensation and a molded product thereof are provided by configuring a thermoplastic resin sheet having a base layer and hairlike bodies arranged regularly on at least one surface thereof, wherein a continuous phase is formed without a structural boundary between the base layer and the hairlike bodies.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: February 20, 2024
    Assignee: Denka Company Limited
    Inventors: Junpei Fujiwara, Yasushi Hirokawa, Tomohiro Osawa
  • Patent number: 11906513
    Abstract: It is an object of the present invention to provide a method or an immunochromatographic test piece, which controls a speed or a direction of development of a specimen on the immunochromatographic test piece, so that a treatment with an acid reagent, nitrite, and a neutralizing reagent is properly controlled. The present invention provides an immunochromatographic test piece for extracting and measuring a sugar chain antigen in a specimen, the immunochromatographic test piece having a neutralizing region impregnated with a neutralizing reagent upstream of a label region, and further having a solid acid reagent or nitrite region impregnated with a solid acid reagent, or with nitrite, upstream of the neutralizing region, wherein a resin-made sheet is sandwiched between the solid acid reagent or nitrite region the neutralizing region so as to suppress the movement of a reagent or the movement of a specimen solution between the regions.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: February 20, 2024
    Assignee: Denka Company Limited
    Inventors: Daisuke Kato, Shino Muramatsu, Tomohiro Hattori
  • Publication number: 20240053338
    Abstract: An object of the present invention is to provide: a monoclonal antibody that makes it possible that adenovirus contained in a test specimen is detected and measured rapidly, simply, and with high-sensitivity; and an immunoassay for adenovirus and an immunoassay device therefor, for both of which the monoclonal antibody is used. The present invention provides: a monoclonal antibody or an antigen-binding fragment thereof, including heavy chains CDR1 to CDR3 as shown in the following (a) to (c) and a light chain CDR1 as shown in the following (d); and an immunoassay and an immunoassay device, for both of which the monoclonal antibody or the antigen-binding fragment thereof is used; (a) a heavy chain CDR1 composed of an amino acid sequence containing NY; (b) a heavy chain CDR2 composed of an amino acid sequence containing SN; (c) a heavy chain CDR3 composed of an amino acid sequence containing SYY and DY; and (d) a light chain CDR1 composed of an amino acid sequence containing NG.
    Type: Application
    Filed: April 15, 2021
    Publication date: February 15, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Takashi MIYAZAWA, Miwa KUWAHARA
  • Publication number: 20240052226
    Abstract: Aggregated boron nitride particles in which hexagonal boron nitride primary particles are aggregated and which include an alkyl group-containing silane coupling agent. The present invention can provide boron nitride powder for obtaining a heat-dissipation sheet with excellent thermal conductivity, a heat-dissipation sheet with excellent thermal conductivity, and a method of producing a heat-dissipation sheet with excellent thermal conductivity.
    Type: Application
    Filed: December 28, 2021
    Publication date: February 15, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Kosuke WADA, Kiyotaka FUJI