Patents Assigned to DENKA COMPANY LIMITED
  • Publication number: 20240150647
    Abstract: A phosphor powder consisting of a red phosphor represented by a general formula (Srx, Ca1-x-y, Euy)AlSi(N,O)3 having the same crystal phase as that of CaAlSiN3. In the general formula, relationships of x<1 and 1?x?y>0 are satisfied. In a case where a cumulative 10% value of the phosphor powder in a volume-based particle size distribution curve is defined as D10, a cumulative 50% value is defined as D50, and a cumulative 90% value is defined as D90, a value of D50 is more than 20 ?m and 40 ?m or less, and a value of (D90?D10)/D50 is 1.12 or less.
    Type: Application
    Filed: March 11, 2022
    Publication date: May 9, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Moeko TANAKA, Tomohiro NOMIYAMA
  • Publication number: 20240153730
    Abstract: An emitter includes an insulator, a pair of terminals attached to the insulator separately from each other, at least one filament attached between the pair of terminals in an arch shape, and an electron source fixed to the filament. The filament has bent portions between a contact with respect to the electron source and contacts with respect to the terminals. A device is provided with the emitter.
    Type: Application
    Filed: March 9, 2022
    Publication date: May 9, 2024
    Applicant: Denka Company Limited
    Inventor: Daisuke ISHIKAWA
  • Publication number: 20240150184
    Abstract: Silica powder having a dielectric loss tangent of 0.004 or less, in which the number of silicon metal particles in 10 g of the silica powder is 30 or less. A method for producing silica powder, including a heating step of heating silica powder in the presence of chlorine. Silica powder having a low dielectric loss tangent and a low silicon metal content, and a method for producing the silica powder can be provided.
    Type: Application
    Filed: March 11, 2022
    Publication date: May 9, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Hiroyuki SHIOTSUKI, Takaaki MINAMIKAWA, Koji MIYAZAKI
  • Patent number: 11978357
    Abstract: Disclosed is an ulcer model used to practice a procedure including hemorrhage arrest, the ulcer model including a model main body which includes upper and lower surfaces facing each other and a tubular simulated blood vessel path provided between the upper surface and the lower surface and having an inlet opening and an outlet opening. The upper surface includes a ring-shaped raised surface that rises in a thickness direction of the model main body and a simulated ulcer surface that is a recessed bottom surface surrounded by the raised surface. The simulated blood vessel path extends from a part other than the upper surface of the surfaces of the model main body to the simulated ulcer surface or an area in the vicinity of the inside thereof.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: May 7, 2024
    Assignees: Denka Company Limited, Tohoku University
    Inventors: Akira Miyama, Toru Arai, Takashi Sasaki, Takeshi Kanno, Yularo Arata, Atsushi Masamune
  • Patent number: 11976811
    Abstract: A light emitting device of the present invention includes a light emitting substrate including an insulating substrate, a circuit pattern layer disposed on one surface of the insulating substrate, and at least one light emitting element bonded to the circuit pattern layer, a flat heat pipe mechanism that removes heat from the light emitting substrate, a temperature of which is increased with light emission of the at least one light emitting element, and a cooling unit that cools the flat heat pipe mechanism.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: May 7, 2024
    Assignee: DENKA COMPANY LIMITED
    Inventor: Masahiro Konishi
  • Publication number: 20240145640
    Abstract: A phosphor plate according to the present invention is a phosphor plate including: a plate-like composite including a base material and a phosphor dispersed in the base material, in which both Ry1 and Ry2 are 5.00 ?m or less, where Ry1 is a maximum height on a front surface of the phosphor plate and Ry2 is a maximum height on a back surface.
    Type: Application
    Filed: February 21, 2022
    Publication date: May 2, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Yuki KUBOTA, Taiyo YAMAURA, Kazuhiro ITO
  • Publication number: 20240141157
    Abstract: A block copolymer composition contains a block copolymer having a vinyl aromatic hydrocarbon monomer unit and a conjugated diene monomer unit. The block copolymer composition satisfies: when a total of the vinyl aromatic hydrocarbon monomer unit and the conjugated diene monomer unit in the composition is taken as 100 mass %, a content of the conjugated diene monomer unit is 10-20 mass %; the composition contains 60-100 mass % of the block copolymer having a structure represented by (S)-[(S/B)]2 where (S) is a polymer chain of the vinyl aromatic hydrocarbon monomer unit, and (S/B) is a copolymer chain having the vinyl aromatic hydrocarbon monomer unit and the conjugated diene monomer unit; Mn of the block copolymer contained in the composition is 100,000-200,000; and when storage moduli measured at 70° C. and 100° C. in dynamic viscoelasticity measurement are defined as E?70 and E?100, V in V=E?70×(E?70?E?100)/30 is 0.5×1016-2.0×1016.
    Type: Application
    Filed: July 1, 2021
    Publication date: May 2, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Soichiro NAKANISHI, Yuya NAKAMURA, Hitomi YAKUNO, Tadashi SAWASATO
  • Patent number: 11973002
    Abstract: A composite substrate includes, in this order: a ceramic plate; a metal layer containing at least one selected from the group consisting of aluminum and an aluminum alloy; and a thermal sprayed layer containing at least one selected from the group consisting of copper and a copper alloy, and an intermetallic compound containing copper and aluminum as constituent elements is scattered between the metal layer and the thermal sprayed layer.
    Type: Grant
    Filed: November 12, 2020
    Date of Patent: April 30, 2024
    Assignee: Denka Company Limited
    Inventors: Atsushi Sakai, Masaya Yumiba, Kentaro Nakayama, Yoshitaka Taniguchi
  • Publication number: 20240132649
    Abstract: A (meth)acrylate-based block copolymer including a polymer block and a (meth)acrylate-based polymer block, wherein: the (meth)acrylate-based block copolymer contains 5 to 30% by mass of the polymeric block and 70 to 95% by mass of the (meth)acrylate-based polymer block with respect to 100% by mass of the (meth)acrylate-based block copolymer; the polymer block has a monomer unit derived from a monomer; when the monomer is polymerized alone, a polymer with a glass transition temperature of 80° C. or higher can be obtained; and a tensile strength at break measured in accordance with JIS K 6251 of a film obtained by immersion-molding a (meth)acrylate-based block copolymer latex containing the (meth)acrylate-based block copolymer and heat-treating at 130° C. for 30 minutes is 14 MPa or more.
    Type: Application
    Filed: March 16, 2022
    Publication date: April 25, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Wataru NISHINO, Yushi KUMAGAI, Ibuki SHIMOTOMAI, Yutaka SAITO
  • Patent number: 11965096
    Abstract: [Problem] To provide a resin composition that can lead to a biological model, which has a softness and provides a sensation of needle insertion close to those of human blood vessels and/or skin, and a biological model using the same. [Solution] A resin composition containing, with respect to 100 parts by mass of a component (A) hydrogenated block copolymer having a MFR (temperature 230° C., load 2.16 kg) of 1 g/10 min or less: 350 parts by mass or more and 1000 parts by mass or less of a component (B) oil; and 0.01 parts by mass or more and less than 150 parts by mass of a component (C) lubricant. The component (B) oil preferably has a kinematic viscosity of 0.1-100 mm2/s at 37.8° C. or 40° C.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: April 23, 2024
    Assignee: DENKA COMPANY LIMITED
    Inventors: Akira Miyama, Mutsumi Matsumoto
  • Patent number: 11965078
    Abstract: A chloroprene-unsaturated nitrile copolymer composition containing 100 parts by mass of a chloroprene-unsaturated nitrile copolymer having 3 to 20% by mass of a structural unit derived from an unsaturated nitrile monomer, and 0.05 to 2.0 parts by mass of a xanthogen compound.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: April 23, 2024
    Assignee: Denka Company Limited
    Inventors: Suguru Onuki, Wataru Nishino, Atsunori Kondo, Yuhei Ishigaki, Naoki Kobayashi
  • Publication number: 20240124697
    Abstract: A resin composition has a low styrene-based resin content and that has little impact on the environment, wherein the resin composition has good moldability and yields molded articles having excellent tensile moduli and tensile elongations at break; and a molded article composed of the resin composition. The resin composition contains an inorganic filler containing calcium carbonate and a styrene-based resin containing a diene component, wherein the inorganic filler content is 50 mass % or more relative to the overall mass of the resin composition, and as measured in accordance with ASTM-D638, the tensile modulus is 1,000-3,000 MPa, and the tensile elongation at break is 5% or higher.
    Type: Application
    Filed: March 24, 2022
    Publication date: April 18, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Eri KAMIMAKI, Daisuke MOTOI, Hirotaka KOBAYASHI
  • Publication number: 20240124773
    Abstract: A phosphor powder containing a phosphor represented by General Formula (I) below. In General Formula (I), M1 includes at least La and optionally further includes one or more elements selected from the group made of lanthanoid elements other than Y and La, M2 includes at least Ba and optionally further includes one or more elements selected from the group made of Mg, Ca, and Sr, x is equal to or more than 0.005 and equal to or less than 0.2, y is equal to or more than 0 and equal to or less than 0.1, and z is more than 0.44 and equal to or less than 0.99: (Eu(1-x)(1-z)M1xM2(1-x)z)2(Si1-yAly)5N8 . . . (I).
    Type: Application
    Filed: February 25, 2022
    Publication date: April 18, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Hiroki BANNO, Hiroaki TOYOSHIMA
  • Publication number: 20240117083
    Abstract: A chloroprene-based polymer, wherein: a 1H-NMR spectrum of the chloroprene-based polymer measured in a deuterochloroform solvent has a peak at 5.80 to 6.00 ppm; when an area of the peak at 5.80 to 6.00 ppm is A and an area of a peak at 4.05 to 6.00 ppm is B, A/B is 1.20/100 or less; the 1H-NMR spectrum of the chloroprene-based polymer measured in a deuterochloroform solvent has a peak at 5.40 to 5.60 ppm; when an area of the peak at 5.40 to 5.60 ppm is D and the area of the peak at 4.05 to 6.00 ppm is B, D/B is 97.20/100 or less, is provided.
    Type: Application
    Filed: March 24, 2022
    Publication date: April 11, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Seiya TOMIZAWA, Wataru NISHINO, Misaki TADA
  • Publication number: 20240117161
    Abstract: A chloroprene-based polymer latex including a chloroprene-based polymer, wherein: an amount of substance of alkali metal cation per unit mass in the chloroprene-based polymer latex is 0.05 to 0.12 mmol/g, when the chloroprene-based polymer latex is freeze-dried to obtain a solid content containing the chloroprene-based polymer, and an ethanol-toluene azeotropic mixture soluble content specified in JIS K 6229 is extracted by refluxing from the solid content to obtain an extract, and the obtained extract is acid treated with hydrochloric acid, an amount of rosin acid of in the solid content measured by gas chromatography is 1.4 to 4.2% by mass with respect to 100% by mass of the chloroprene-based polymer in the solid content, is provided.
    Type: Application
    Filed: March 24, 2022
    Publication date: April 11, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Seiya TOMIZAWA, Wataru NISHINO, Misaki TADA
  • Patent number: 11952520
    Abstract: A method for manufacturing a phosphor powder of the present invention, in which the phosphor powder 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, the method including: a mixing step of mixing a raw material containing each element constituting the inorganic compound to obtain a raw material mixture blended such that b=51 and a/b>(26?c)/51 are satisfied when molar ratios of Ba, Si, and Eu in the raw material mixture are respectively a, b, and c; a firing step of firing the raw material mixture to obtain a fired product; and a cleaning treatment step of subjecting the fired product to an acid treatment and/or a water treatment.
    Type: Grant
    Filed: August 10, 2021
    Date of Patent: April 9, 2024
    Assignee: DENKA COMPANY LIMITED
    Inventors: Hiroki Banno, Hiroaki Toyoshima
  • Patent number: 11945891
    Abstract: A composition having excellent curability and adhesive bonding ability is provided. A composition, comprising the following components (1) to (5): (1) a polymerizable vinyl monomer containing 10 to 70 parts by mass of (1-1), 10 to 60 parts by mass of (1-2), and 10 to 60 parts by mass of (1-3) based on 100 parts by mass of (1) the polymerizable vinyl monomer, in which (1-1) is a (meth)acrylic monomer represented by the formula (A) Formula (A) Z—O—R1 (wherein, Z represents a (meth)acryloyl group, and R1 represents an alkyl group.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: April 2, 2024
    Assignee: DENKA COMPANY LIMITED
    Inventors: Hideki Hayashi, Yoshitsugu Goto, Chiaki Takano
  • Patent number: 11940138
    Abstract: A light emitting device of the present invention includes a light emitting substrate including an insulating substrate, a circuit pattern layer disposed on one surface of the insulating substrate, and at least one light emitting element bonded to the circuit pattern layer, a flat heat pipe mechanism that removes heat from the light emitting substrate, a temperature of which is increased with light emission of the at least one light emitting element, and a cooling unit that cools the flat heat pipe mechanism.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: March 26, 2024
    Assignee: DENKA COMPANY LIMITED
    Inventor: Masahiro Konishi
  • Patent number: 11942578
    Abstract: A phosphor substrate having at least one light emitting element mounted on one surface, includes an insulating substrate, at least one electrode pair disposed on one surface of the insulating substrate and bonded to the light emitting element, and a phosphor layer disposed on one surface of the insulating substrate, including a phosphor in which a light emission peak wavelength, in a case where light emitted by the element is used as excitation light, is in a visible light region, in which a bonded surface of the electrode pair facing an outer side in a thickness direction of the insulating substrate, the bonded surface being bonded to the light emitting element, is positioned further on the outer side in the thickness direction than a non-bonded surface other than the bonded surface, and at least a part of the phosphor layer is disposed around the bonded surface of the one surface.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: March 26, 2024
    Assignee: DENKA COMPANY LIMITED
    Inventor: Masahiro Konishi
  • Publication number: 20240092652
    Abstract: A method for producing a particle, containing a step of heating a mixture containing TiH2 and TiO2 at 700 to 950° C., wherein a molar ratio of the TiH2 to the TiO2 contained in the mixture is 5.0 to 6.8.
    Type: Application
    Filed: January 14, 2022
    Publication date: March 21, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Takuji KOBAYASHI, Motoharu FUKAZAWA, Takuto OKABE, Mitsuru KAWAGOE