Patents Assigned to DENKA COMPANY LIMITED
  • CARBON BLACK, SLURRY, AND LITHIUM ION SECONDARY BATTERY
    Publication number: 20240021834
    Abstract: Carbon black having a specific surface area of 150 m2/g or more and 400 m2/g or less, and a ratio (DBP/CDBP) of a DBP absorption (DBP) to a compressed DBP absorption (CDBP) of 2.0 or less.
    Type: Application
    Filed: December 2, 2021
    Publication date: January 18, 2024
    Applicant: Denka Company Limited
    Inventors: Yusaku HARADA, Yuji KOGA
  • Fiber for artificial hair and head accessory product
    Patent number: 11873583
    Abstract: A fiber for artificial hair constituted of a resin composition containing an aliphatic polyamide. A weight average molecular weight Mw of a dissolved component obtained when the fiber for artificial hair is dissolved in hexafluoroisopropanol is 46,000 or more and less than 65,000.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: January 16, 2024
    Assignee: DENKA COMPANY LIMITED
    Inventors: Atsushi Horihata, Atsushi Takei
  • Resin sheet having hair-like bodies and molded article thereof
    Patent number: 11872790
    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: January 16, 2024
    Assignee: DENKA COMPANY LIMITED
    Inventors: Hiroko Toyama, Keishi Maeda
  • RESIN SHEET, CONTAINER, CARRIER TAPE, AND ELECTRONIC COMPONENT PACKAGING
    Publication number: 20240010806
    Abstract: A resin sheet for molding includes a base material sheet, and a surface layer provided on at least one surface of the base material sheet and including silicone, wherein the silicone content in the surface layer is 0.3 to 4.0 g/m2, and wherein the base material sheet is formed of a resin composition including 29 to 65 parts by mass of a Styrene-conjugated diene block copolymer (A), 25 to 60 parts by mass of a polystyrene resin (B), and 8 to 20 parts by mass of a high-impact polystyrene resin (C) (provided that a total amount of the component (A), the component (B), and the component (C) is 100 parts by mass). A carrier tape 100 is a molded body 16 of the resin sheet, wherein an accommodation portion 20 capable of accommodating an article is provided.
    Type: Application
    Filed: June 7, 2021
    Publication date: January 11, 2024
    Applicant: Denka Company Limited
    Inventors: Takeshi SAITO, Ryosuke YANAKA
  • ADHESIVE TAPE AND PROCESSING METHOD
    Publication number: 20240010881
    Abstract: Provided is an adhesive tape having a base material layer and an adhesive layer disposed on the base material layer, wherein the adhesive layer contains a radical photoinitiator and polymer A having polymerizable carbon double bonds, and difference |R0-R1| between contact angle R0 of silicon wafer surface with respect to water and contact angle R1 of the silicon wafer surface with respect to water after the adhesive layer is attached to the silicon wafer, left to stand for 24 hours, then irradiated with ultraviolet ray, and peeled, is 20° or less.
    Type: Application
    Filed: October 20, 2021
    Publication date: January 11, 2024
    Applicant: Denka Company Limited
    Inventors: Chie NAKAMURA, Tomoaki TANAKA, Sota TOKUI, Mizuki HASUMI
  • MAGNESIUM OXIDE POWDER, FILLER COMPOSITION, RESIN COMPOSITION, AND HEAT DISSIPATION PART
    Publication number: 20240010899
    Abstract: A magnesium oxide powder includes a magnesium oxide particle, wherein the number of an open pore communicating with a surface of the magnesium oxide particle measured by a specific measurement method is 8.0×10?4/?m2 or less.
    Type: Application
    Filed: September 14, 2021
    Publication date: January 11, 2024
    Applicants: DENKA COMPANY LIMITED, TATEHO CHEMICAL INDUSTRIES CO., LTD.
    Inventors: Shuji SASAKI, Junichi NAKAZONO, Shotaro TANOUE, Yoshihisa OSAKI, Tomoaki CHIKAZAWA, Miki YAMAMOTO
  • TEST KIT WITH IMPROVED SPECIFICITY BY SUPPRESSING FALSE POSITIVES
    Publication number: 20240011978
    Abstract: This invention relates to a specimen-extracting solution containing a component capable of strongly suppressing false positives, which could not be suppressed by conventional techniques, a method for extracting specimens, and a test reagent using such specimen-extracting solution and such method, when detecting virus, bacteria, target protein, or other antigens from specimens derived from body fluids, such as nasal swab specimens, nasal aspirate specimens, nasal wash specimens, nasal secretion specimens collected by nose blowing, pharyngeal swab specimens, saliva specimens, fecal specimens, serum specimens, plasma specimens, and urine specimens, with the use of a detection reagent utilizing the antigen-antibody reactions or the reactions between substances interactive with each other.
    Type: Application
    Filed: September 8, 2021
    Publication date: January 11, 2024
    Applicant: Denka Company Limited
    Inventors: Yuki SHINOHARA, Ai SATO
  • SHEET CONTAINING BORON NITRIDE PARTICLES EACH HAVING HOLLOW PART
    Publication number: 20240010817
    Abstract: A sheet containing a resin and boron nitride particles each having a hollow part, in which the resin is filled into the hollow part of the boron nitride particles.
    Type: Application
    Filed: August 19, 2021
    Publication date: January 11, 2024
    Applicant: Denka Company Limited
    Inventors: Yusuke SASAKI, Kenji MIYATA, Michiharu NAKASHIMA
  • PHOSPHOR POWDER, LIGHT-EMITTING DEVICE, IMAGE DISPLAY DEVICE, AND ILLUMINATION DEVICE
    Publication number: 20240010914
    Abstract: A phosphor powder including phosphor particles of a phosphor represented by a general formula Mx(Si, Al)2(N, O)3±y and in which a part of M is substituted with a Ce element, the phosphor powder includes phosphor particles in which a Si/AI atomic ratio is equal to or more than 1.5 and equal to or less than 6, an O/N atomic ratio is equal to or more than 0 and equal to or less than 0.1, 5 to 50 mol % of M is Li, and 0.5 to 10 mol % of M is Ce. In a case where a volume-based cumulative 10% particle size, a volume-based cumulative 50% particle size, and a volume-based cumulative 90% particle size of this phosphor powder measured by a laser diffraction scattering method are defined as D10, D50, and D90, respectively, (D90-D10)/D50 is equal to or more than 0.7 and equal to or less than 1.1.
    Type: Application
    Filed: November 4, 2021
    Publication date: January 11, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventor: Hideyuki EMOTO
  • System, program, and method for determining hypermutated tumor
    Patent number: 11869190
    Abstract: A method, a program, and a method determining hypermutated type cancer with higher accuracy than before is provided.
    Type: Grant
    Filed: April 4, 2022
    Date of Patent: January 9, 2024
    Assignees: Niigata University, Denka Company Limited
    Inventors: Toshifumi Wakai, Shujiro Okuda, Yoshifumi Shimada, Hiroshi Izutsu, Keisuke Kodama
  • CARBON BLACK, SLURRY, AND LITHIUM-ION SECONDARY BATTERY
    Publication number: 20240006615
    Abstract: Carbon black having a specific surface area of 150 m2/g or more and 400 m2/g or less, and a ratio (S2/S1) of a peak area (S2) of a peak at m/z 128 to a peak area (S1) of a peak at m/z 57 detected through thermal desorption spectroscopy of less than 2.00.
    Type: Application
    Filed: December 2, 2021
    Publication date: January 4, 2024
    Applicant: Denka Company Limited
    Inventors: Yusaku HARADA, Yuji KOGA
  • PHOSPHOR PARTICLES AND LIGHT-EMITTING DEVICE
    Publication number: 20240002719
    Abstract: Phosphor particles are composed of one or two selected from a powdery phosphor formed of CASN and SCASN, wherein a particle size corresponding to a cumulative 50% is Dx50 and to a cumulative 90% is Dx90 in a volume-based integrated fraction of the phosphor particles, and where a particle size corresponding to a cumulative 50% is Dy50 and to a cumulative 90% is Dy90 after subjecting the particles to treatment, (a) Dx50 is between 0.5 ?m and 35 ?m, and (b) Dx90/Dy90 is between 0.7 and 15. The treatment; a dispersion liquid wherein 30 mg of the particles are uniformly dispersed in an aqueous solution of sodium hexametaphosphate having a concentration of 0.2% and put into a cylindrical container A vibrator part of an ultrasonic homogenizer is inserted and the liquid is irradiated with ultrasonic waves at a frequency of 19.5 kHz and an output of 150 W for 3 minutes.
    Type: Application
    Filed: November 4, 2021
    Publication date: January 4, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Shunsuke MITANI, Keita KOBAYASHI
  • PHOSPHOR POWDER, LIGHT-EMITTING DEVICE, IMAGE DISPLAY DEVICE, AND ILLUMINATION DEVICE
    Publication number: 20240002721
    Abstract: A phosphor powder including phosphor particles which are a phosphor represented by a general formula Mx(Si, Al)2(N, O)3±y (where M is Li and one or more alkaline earth metal elements and 0.52?x?0.9 and 0.06?y?0.36 are satisfied) and in which a part of M is substituted with a Ce element, wherein a Si/Al atomic ratio is equal to or more than 1.5 and equal to or less than 6, an O/N atomic ratio is equal to or more than 0 and equal to or less than 0.1, 5 to 50 mol % of M is Li, and 0.5 to 10 mol % of M is Ce, and a total content of a Cr element, a Fe element, and a Ni element in the phosphor powder is equal to or less than 20.0 ppm.
    Type: Application
    Filed: November 11, 2021
    Publication date: January 4, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventor: Hideyuki EMOTO
  • CARBON BLACK, SLURRY, AND LITHIUM ION SECONDARY BATTERY
    Publication number: 20240002670
    Abstract: Carbon black having a specific surface area of 150 m2/g or more and 400 m2/g or less and a hydrochloric acid absorption amount of 30 mL/5 g or more, wherein, when a 3 mass % slurry is prepared using N-methyl-2-pyrrolidone as a dispersion medium, the slurry viscosity at 25° C. and a shear rate of 10 s?1 is 200 mPa·s or more and 1,200 mPa·s or less.
    Type: Application
    Filed: December 2, 2021
    Publication date: January 4, 2024
    Applicant: Denka Company Limited
    Inventors: Yusaku HARADA, Yuji KOGA
  • CURABLE COMPOSITION, ARTICLE, CHECKING METHOD, AND ADHESIVE COMPOSITION
    Publication number: 20230416578
    Abstract: A curable composition containing a polymerizable compound (A) and a polymerization initiator (B). A half width of a temperature-loss tangent (tan ?) graph is 90° C. or higher and 150° C. or lower, where the half width is obtained by measuring a dynamic viscoelasticity of a cured substance of this curable composition under measurement conditions of frequency: 1.0 Hz, mode: tensile mode, measurement temperature range: ?50° C. to 200° C., and temperature rising rate: 2° C./min.
    Type: Application
    Filed: October 27, 2021
    Publication date: December 28, 2023
    Applicant: DENKA COMPANY LIMITED
    Inventors: Yusuke TAKAHASHI, Chiaki TAKANO
  • POLYROTAXANE HAVING HYDROXY GROUP OR SULFO GROUP
    Publication number: 20230416682
    Abstract: A coating agent for promoting osteoblast differentiation and/or adipocyte differentiation of mesenchymal stem cells, the coating agent comprising a polyrotaxane represented by Formula (1): wherein R1 is a hydrogen atom or a methyl group, m is 1 to 2000, and n is 10 to 500, is a cyclodextrin in which at least one hydroxyl group is modified with a group represented by —X—Y, X is a divalent organic group, and Y is a hydroxyl group or a sulfo group.
    Type: Application
    Filed: November 22, 2021
    Publication date: December 28, 2023
    Applicants: DENKA COMPANY LIMITED, NATIONAL UNIVERSITY CORPORATION TOKYO MEDICAL AND DENTAL UNIVERSITY
    Inventors: Ruriko AOYAMA SEKIYA, Yoshinori ARISAKA, Nobuhiko YUI, Takanori IWATA, Tetsuya YODA, Masahiro HAKARIYA, Hiroki MASUDA
  • CHLOROPRENE POLYMER COMPOSITION, MANUFACTURING METHOD THEREFOR, AND DIP-MOLDED ARTICLE
    Publication number: 20230416509
    Abstract: A method for manufacturing a chloroprene polymer composition, the method including: a polymerization step of polymerizing chloroprene in the presence of at least one rosin acid component selected from the group consisting of a rosin acid and a rosin acid salt to obtain a chloroprene polymer composition containing a chloroprene polymer, in which in the rosin acid component, a mass ratio B1/A1 of a total amount B1 of abietic acid, neoabietic acid, palustric acid, levopimaric acid, and salts thereof with respect to a total amount A1 of dehydroabietic acid, pimaric acid, isopimaric acid, dihydroabietic acid, and salts thereof is 0.10 to 3.00, and a toluene insoluble content of the chloroprene polymer is 50% by mass or more.
    Type: Application
    Filed: September 17, 2021
    Publication date: December 28, 2023
    Applicant: Denka Company Limited
    Inventors: Misaki ITO, Masao ONOZUKA, Masahiro KATO
  • ADHESIVE TAPE AND PROCESSING METHOD
    Publication number: 20230407149
    Abstract: Provided is an adhesive tape having a base material layer and an adhesive layer disposed on the base material layer, wherein the adhesive layer contains a radical photoinitiator and polymer A having polymerizable carbon double bonds, a tensile modulus of elasticity of the adhesive layer after ultraviolet irradiation is 400 MPa or less, and an elongation at break of the adhesive layer after ultraviolet irradiation is 16% or more.
    Type: Application
    Filed: October 20, 2021
    Publication date: December 21, 2023
    Applicant: Denka Company Limited
    Inventors: Chie NAKAMURA, Tomoaki TANAKA, Sota TOKUI, Mizuki HASUMI
  • PHOSPHOR POWDER, LIGHT-EMITTING DEVICE, IMAGE DISPLAY DEVICE, AND ILLUMINATION DEVICE
    Publication number: 20230407172
    Abstract: A phosphor powder including phosphor particles of a phosphor which is represented by a general formula Mx(Si, Al)2(N, O)3±y (where M is Li and one or more alkaline earth metal elements and 0.52?x?0.9 and 0.06?y?0.36 are satisfied) and in which a part of M is substituted with a Ce element, the phosphor powder includes phosphor particles in which a Si/Al atomic ratio is equal to or more than 1.5 and equal to or less than 6, an O/N atomic ratio is equal to or more than 0 and equal to or less than 0.1, 5 to 50 mol % of M is Li, and 0.5 to 10 mol % of M is Ce. A light absorption A700 of this phosphor powder at a wavelength of 700 nm is equal to or less than 10%.
    Type: Application
    Filed: November 4, 2021
    Publication date: December 21, 2023
    Applicant: DENKA COMPANY LIMITED
    Inventor: Hideyuki EMOTO
  • HEXAGONAL BORON NITRIDE POWDER AND METHOD FOR PRODUCING SINTERED BODY
    Publication number: 20230406777
    Abstract: One aspect of the present disclosure provides a hexagonal boron nitride powder including: primary particles of hexagonal boron nitride, in which the number of colored particles containing carbon is 50 or less per 10 g of the hexagonal boron nitride powder.
    Type: Application
    Filed: September 27, 2021
    Publication date: December 21, 2023
    Applicant: Denka Company Limited
    Inventor: Ryuki MATSUI