Patents Assigned to DENKA COMPANY LIMITED
  • Publication number: 20220372546
    Abstract: A kit used for fractionation of small dense LDL cholesterol (sdLDL-C) in a sample, including: a first reagent composition having one or two or more activities selected from the group consisting of cholesterol esterase activity, cholesterol oxidase activity, and sphingomyelinase activity; and a second reagent composition for quantifying the sdLDL-C, in which in an absorption spectrum after storing the first reagent composition at 37° C. for 2 weeks, a ratio R1 represented by ABS400/ABS450 is 0.90 or more and 3.00 or less, and in an absorption spectrum after storing the second reagent composition at 37° C. for 2 weeks, a ratio R1 represented by ABS400/ABS450 is 0.90 or more and 8.00 or less.
    Type: Application
    Filed: September 9, 2020
    Publication date: November 24, 2022
    Applicant: DENKA COMPANY LIMITED
    Inventors: Yasuki ITO, Noriyuki SATOH
  • Publication number: 20220369499
    Abstract: Among two main surfaces of a heat dissipation member, one main surface is curved to be convex in an outward direction and the other convex in an inward direction. When a straight line passing through both endpoints P1 and P2 of the curve is l1, a point at which a distance to l1 on the curve is maximum is Pmax, an intersection point between l1 and a perpendicular drawn from Pmax to l1 is P3, a middle point of a line segment P1P3 is P4, an intersection point between the curve and a straight line that passes through P4 and is perpendicular to l1 is Pmid, a length of the line segment P1P3 is L, a length of a line segment P3Pmax is H, and a length of a line segment P4Pmax is h, (2 h/L)/(H/L) is 1.1 or more.
    Type: Application
    Filed: January 29, 2020
    Publication date: November 17, 2022
    Applicant: DENKA COMPANY LIMITED
    Inventors: Daisuke GOTO, Hiroaki OTA
  • Publication number: 20220367760
    Abstract: A phosphor in which at least some of an element M in a phosphor host crystal represented by M?(L,A)?X? is substituted with Eu as an activation material. M represents one or more (including at least Sr) of Mg, Ca, Sr, Ba, and Zn, L represents one or more of Li, Na, and K, A represents one or more of Al, Ga, B, In, Sc, Y, La, and Si, X represents one or more (except that X represents only N) of O, N, F, and Cl, ?, ?, ?, and ? satisfy 8.70??+?+?+??9.30, 0.00<??1.30, 3.70???4.30, 3.70???4.30, and 0.00<??1.30. In a fluorescence spectrum obtained by irradiation with light having a wavelength of 260 nm, when a fluorescence intensity at a wavelength of 569 nm is represented by I0 and a fluorescence intensity at a wavelength of 617 nm is represented by I1, I1/I0 is 0.01 or more and 0.4 or less.
    Type: Application
    Filed: June 18, 2020
    Publication date: November 17, 2022
    Applicant: DENKA COMPANY LIMITED
    Inventors: Hiroaki TOYOSHIMA, Mitsuru KAWAGOE
  • Publication number: 20220365084
    Abstract: This invention provides a method and an immunochromatographic device that enable measurement with sufficient sensitivity by performing nitrous acid extraction over a sufficiently long period of time in an immunochromatographic method comprising extracting a sugar chain antigen with nitrous acid and measuring the extracted sugar chain antigen on an immunochromatographic test strip.
    Type: Application
    Filed: October 2, 2020
    Publication date: November 17, 2022
    Applicant: Denka Company Limited
    Inventors: Daisuke KATO, Shino MURAMATSU
  • Publication number: 20220362370
    Abstract: An object of the present invention is to establish means for providing a component vaccine which can elicit immunity to a non-structural protein. The present inventors have found that the object can be attained by providing a component vaccine containing an associated product containing a trimer and/or a hexamer of a molecular needle to which a non-structural protein of a pathogenic virus is attached.
    Type: Application
    Filed: August 26, 2020
    Publication date: November 17, 2022
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, THE KITASATO INSTITUTE, DENKA COMPANY LIMITED
    Inventors: Takafumi UENO, Dan Que NGUYEN, Kazuhiko KATAYAMA, Reiko TODAKA, Kei HAGA, Akihito SAWADA
  • Publication number: 20220356074
    Abstract: A potassium hexafluoromanganate is represented by General Formula: K2MnF6, and a diffuse reflectance with respect to light having a wavelength of 310 nm is 20% or more.
    Type: Application
    Filed: August 4, 2020
    Publication date: November 10, 2022
    Applicant: DENKA COMPANY LIMITED
    Inventors: Masayoshi ICHIKAWA, Motoi TANAKA, Kazuhiro ITOH
  • Publication number: 20220356285
    Abstract: A maleimide based copolymer, manufacturing method thereof, and a resin composition using the maleimide based copolymer is provided. The maleimide based copolymer includes 40 to 60 mass % of aromatic vinyl monomer unit, 5 to 20 mass % of vinyl cyanide monomer unit, 35 to 50 mass % of maleimide monomer unit, and 0 to 10 mass % of monomer copolymerizable with these monomer units. The maleimide based copolymer has a glass transition temperature of 165° C. or higher and a melt mass flow rate of 25 to 80 g/10 min measured at 265° C. with 98 N load. By using such maleimide based copolymer, flowability can be improved without decreasing heat resistance providing ability.
    Type: Application
    Filed: July 7, 2020
    Publication date: November 10, 2022
    Applicant: DENKA COMPANY LIMITED
    Inventors: Soichiro NAKANISHI, Masanori MATSUMOTO, Kohei NISHINO
  • Publication number: 20220356381
    Abstract: An adhesive tape comprising a porous substrate having a basis weight of 60-150 g/m2, a thickness of 200 ?m or more, and a void ratio of 35 vol % or more, a resin layer provided to at least one surface of the porous substrate, and an adhesive layer provided on the resin layer, wherein the resin layer is formed from a resin composition (I) including a tackifier resin.
    Type: Application
    Filed: August 4, 2020
    Publication date: November 10, 2022
    Applicant: DENKA COMPANY LIMITED
    Inventors: Akiyoshi KIMURA, Yosuke TATE, Daisuke YOSHIMURA
  • Publication number: 20220356396
    Abstract: A europium-doped ?-sialon phosphor particle. When the element concentration of a Si atom on the surface portion of the particle that is obtained by analyzing a cross section of the phosphor particle by the energy dispersive X-ray analysis method is indicated by Ps [at %], and the element concentration of a Si atom near the center of the particle that is obtained by an analysis by the same method is indicated by Pc [at %], the Pc-Ps value is 3 at % or more.
    Type: Application
    Filed: August 14, 2020
    Publication date: November 10, 2022
    Applicant: DENKA COMPANY LIMITED
    Inventors: Tomohiro NOMIYAMA, Manabu KOBAYASHI, Masaru MIYAZAKI, Tatsuya OKUZONO
  • Patent number: 11492299
    Abstract: A nitride-based ceramics resin composite body having thermal conductivity, electrical insulation, and adhesion to adherends equal to conventional products, and having improved heat resistance reliability during the reflow process, and a thermal conductive insulating adhesive sheet using the same are provided. A nitride-based ceramics resin composite body in which a thermosetting resin composition is impregnated in a porous nitride-based ceramics sintered body is provided. The thermosetting resin composition includes a specific epoxy resin and a bismaleimide triazine resin, and a water absorption of the thermosetting resin composition in a completely cured state measured in accordance with method A in JIS K7209 (2000) is 1% by mass or less.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: November 8, 2022
    Assignee: DENKA COMPANY LIMITED
    Inventors: Yoshitaka Minakata, Eri Sasaki, Toshitaka Yamagata, Saori Inoue, Ryo Yoshimatu, Ryuji Koga
  • Patent number: 11497125
    Abstract: A bonded substrate includes a substrate, a metal plate forming a stacked state with the substrate, and bonding member. The metal plate has a first surface on the substrate side and a second surface opposite; wherein an edge of the first surface is located outside an edge of the second. The bonding member is disposed between the substrate and plate to bond the plate and substrate, and protrudes from the edge over an entire periphery of the plate. In cut surfaces obtained by cutting the bonded substrate, a peripheral surface length (A) from a portion corresponding to a peripheral edge of the first surface to a corresponding portion of the second, protrusion length of the bonding member, and thickness (C) of the metal plate satisfy first and second expressions. 0.032?B/(A+B)?0.400??(First Expression) 0.5(mm)?C?2.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: November 8, 2022
    Assignee: DENKA COMPANY LIMITED
    Inventors: Yuta Tsugawa, Koji Nishimura, Ryota Aono
  • Publication number: 20220348478
    Abstract: A potassium hexafluoromanganate is represented by General Formula: K2MnF6, and a diffuse reflectance with respect to light having a wavelength of 550 nm is 60% or more.
    Type: Application
    Filed: August 4, 2020
    Publication date: November 3, 2022
    Applicant: DENKA COMPANY LIMITED
    Inventors: Masayoshi ICHIKAWA, Motoi TANAKA, Kazuhiro ITOH
  • Publication number: 20220350061
    Abstract: A phosphor plate including a base material, and a plate-shaped composite including phosphors dispersed in the base material, in which in a case in which an absorption spectrum of light having a wavelength of 300 nm to 700 nm is measured, when an absorbance at 455 nm is defined as A455(%), an absorbance at 700 nm is defined as A700(%), and a thickness of the phosphor plate is defined as T (mm), (A700/A455)/T satisfies 0.01 or more and 1.00 or less.
    Type: Application
    Filed: June 22, 2020
    Publication date: November 3, 2022
    Applicant: DENKA COMPANY LIMITED
    Inventors: Taiyo YAMAURA, Yuki KUBOTA, Kazuhiro ITO, Hideyuki EMOTO
  • Patent number: 11485906
    Abstract: An ?-sialon phosphor particle containing Eu. At least one minute recess is formed on a surface of the ?-sialon phosphor particle. The ?-sialon phosphor particle is preferably produced by undergoing a raw material mixing step, a heating step, a pulverizing step, and an acid treatment step.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: November 1, 2022
    Assignee: DENKA COMPANY LIMITED
    Inventors: Tomohiro Nomiyama, Yusuke Takeda, Marina Takamura, Tatsuya Okuzono, Masaru Miyazaki, Shintaro Watanabe
  • Publication number: 20220344242
    Abstract: A heat-radiating sheet, in which a rate of reduction (%) ((R1-R2)/R1×100) of a thermal resistance (R2) (° C./W) of the heat-radiating sheet as measured when tightened at a tightening torque of 6 kgf·cm by using a screw after being impregnated in an antifreeze containing 98% by mass or more of ethylene glycol at a temperature of 25° C. for 500 hours relative to a thermal resistance (R1) (° C./W) of the heat-radiating sheet as measured when tightened at a tightening torque of 6 kgf·cm by using a screw is 30% or less. It is possible to provide a heat-radiating sheet having high tolerance against gasoline and engine oil.
    Type: Application
    Filed: September 24, 2020
    Publication date: October 27, 2022
    Applicant: DENKA COMPANY LIMITED
    Inventors: Kosuke WADA, Masahide KANEKO, Ryozo NONOGAKI
  • Publication number: 20220346280
    Abstract: A heat-radiating sheet having a volume resistivity of 1.0×109 ?·cm or more as measured by a direct current voltage of 500 V according to JIS K6911 after being impregnated with an antifreeze containing 98% by mass or more of ethylene glycol at a temperature 25° C. for 250 hours. It is possible to provide a heat-radiating sheet having high tolerance against gasoline and engine oil.
    Type: Application
    Filed: September 24, 2020
    Publication date: October 27, 2022
    Applicant: DENKA COMPANY LIMITED
    Inventors: Kosuke WADA, Masahide KANEKO, Ryozo NONOGAKI
  • Patent number: 11482646
    Abstract: Glare and/or multiple shadows are reduced and/or prevented in an SMD-type lighting fixture using high-power CSP devices. A lighting apparatus includes: a substrate having a plurality of conduction parts; and a plurality of surface mount-type LED elements mounted so as to be connected to the respective plurality of conduction parts which the substrate has, the individual elements being separately sealed, wherein the substrate includes a fluorescent substance layer containing a first fluorescent substance, the layer covering at least part of a surface on a side where the plurality of surface mount-type LED elements are mounted, the first fluorescent substance is excited at a wavelength of emitted light from at least one of the plurality of surface mount-type LED elements, and the plurality of surface mount-type LED elements are not integrally sealed.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: October 25, 2022
    Assignee: DENKA COMPANY LIMITED
    Inventor: Masahiro Konishi
  • Patent number: 11479698
    Abstract: Provided is a chloroprene rubber latex adhesive composition superior in initial adhesive strength and normal adhesive strength and also in thermal creep resistance with adherend. A chloroprene rubber latex adhesive composition includes a carboxy-modified chloroprene-based copolymer latex (A) containing a copolymer of chloroprene monomer and an ethylenic unsaturated carboxylic acid and a polyvinylalcohol, a chloroprene-based polymer latex (B) containing a chloroprene homopolymer or a copolymer of chloroprene monomer and other monomer and a rosin acid metal salt and a chlorinated polyolefin resin emulsion (C), wherein the content ratio of the carboxy-modified chloroprene-based copolymer latex (A) to the chloroprene-based polymer latex (B) is 80:20 to 20:80 as solid matter.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: October 25, 2022
    Assignee: DENKA COMPANY LIMITED
    Inventors: Masao Onozuka, Gaito Kiyofuji, Shogo Hagiwara
  • Patent number: 11483926
    Abstract: A ceramic circuit substrate having high bonding performance and excellent thermal cycling resistance properties, having a circuit pattern provided on a ceramic substrate with a braze material layer interposed therebetween, and a protruding portion formed by the braze material layer protruding from the outer edge of the circuit pattern, wherein: the braze material layer includes Ag, Cu, Ti, and Sn or In; and an Ag-rich phase is formed continuously for 300 ?m or more, towards the inside, from an outer edge of the protruding portion, along a bonding interface between the ceramic substrate and the circuit pattern, and has a bonding void ratio of 1.0% or less.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: October 25, 2022
    Assignee: DENKA COMPANY LIMITED
    Inventors: Akimasa Yuasa, Yusaku Harada, Takahiro Nakamura, Shuhei Morita, Kouji Nishimura
  • Publication number: 20220331419
    Abstract: Provided is a seasonal influenza vaccine having a higher efficacy than a split vaccine. A seasonal influenza vaccine which induces virus-specific antibodies in the nasal mucosa, comprises inactivated whole influenza virus particles as an active ingredient, and is to be administered intradermally at dose per administration of 15 ?g HA or more per strain as antigen.
    Type: Application
    Filed: September 2, 2020
    Publication date: October 20, 2022
    Applicant: DENKA COMPANY LIMITED
    Inventors: Ryotaro MITSUMATA, Asumi KANDA, Nagisa NAKATA, Shigetaka MIMORI