Patents Assigned to Showa Denko K.K.
  • Publication number: 20230026927
    Abstract: A SiC epitaxial wafer includes a SiC substrate and an epitaxial layer laminated on the SiC substrate, wherein the epitaxial layer comprises a first layer, a second layer and a third layer in order from the SiC substrate side, the nitrogen concentration of the SiC substrate is 6.0×1018 cm?3 or more and 1.5×1019 cm?3 or less, the nitrogen concentration of the first layer is 1.0×1017 cm?3 or more and 1.5×1018 cm?3 or less, the nitrogen concentration of the second layer is 1.0×1018 cm?3 or more and 5.0×1018 cm?3 or less, and the nitrogen concentration of the third layer is 5.0×1013 cm?3 or more and 1.0×1017 cm?3 or less.
    Type: Application
    Filed: July 12, 2022
    Publication date: January 26, 2023
    Applicant: SHOWA DENKO K.K.
    Inventors: Tsubasa SHIONO, Yuichiro MABUCHI
  • Publication number: 20230027915
    Abstract: The present invention provides a production method of a polymerized polymer containing a silver nanowire, including a preparation step of preparing a monomer composition containing the silver nanowire, a polymerization step of performing polymerization of the monomer composition containing the silver nanowire, and a standing step of leaving the monomer composition to stand which is performed between the preparation step and the polymerization step, in which a start of the polymerization step is determined in the standing step based on an orientation state in a vertical direction of the silver nanowire in the monomer composition as an index.
    Type: Application
    Filed: December 18, 2020
    Publication date: January 26, 2023
    Applicant: SHOWA DENKO K.K
    Inventors: Yasunao MIYAMURA, Yasushi KADOWAKI, Kuniaki YAMATAKE, Masanao HARA, Shigeru YAMAKI, Hideki OHATA
  • Publication number: 20230022080
    Abstract: A method for producing N-vinylacetamide includes a feeding step of feeding a raw material containing N-(1-methoxyethyl)acetamide (MEA) to an evaporator, an evaporation step of evaporating, by the evaporator, the raw material, to form a vaporized raw material, a superheating step of feeding the vaporized raw material to a superheater, and superheating the vaporized raw material such that a superheating temperature of the vaporized raw material is equal to or more than a temperature higher by 5° C. than a boiling point of the N-(1-methoxyethyl)acetamide (MEA) under an inner pressure of the superheater and equal to or less than 200° C., and a thermal decomposition step of feeding the superheated vaporized raw material to a thermal decomposition reactor, to thermally decompose the superheated vaporized raw material, and a content of the N-(1-methoxyethyl)acetamide in the raw material is from 80 to 100 mass %.
    Type: Application
    Filed: December 7, 2020
    Publication date: January 26, 2023
    Applicant: SHOWA DENKO K.K.
    Inventors: Yuki MIURA, Shuhei NAKAMURA, Takuya YAMANAKA
  • Publication number: 20230025211
    Abstract: An evaluation method includes a step of disposing a sensitive color plate between two polarization plates disposed in a crossed Nicols shape, a step of disposing a measurement material that is a transparent material containing a nanowire between any of one polarization plate or the other polarization plate of the polarization plates and the sensitive color plate, a step of making white light incident from a side of one of the disposed polarization plates, a step of observing a color of the measurement material from a side of the other polarization plate, and a step of evaluating an orientation direction of the nanowire from the color of the measurement material obtained by observation.
    Type: Application
    Filed: December 18, 2020
    Publication date: January 26, 2023
    Applicant: SHOWA DENKO K.K.
    Inventors: Yasunao MIYAMURA, Yasushi KADOWAKI, Kuniaki YAMATAKE, Masanao HARA, Shigeru YAMAKI, Hideki OHATA
  • Publication number: 20230023546
    Abstract: A horizontal continuous casting apparatus includes a fluid supply pipe for supplying a lubricating fluid to the hollow portion of the mold, which is arranged on one end side of the mold; and, a cooling water cavity for accommodating cooling water cooling an inner peripheral surface of the hollow portion of the mold, which is formed outside the inner peripheral surface, wherein the inner peripheral surface and the inner bottom surface of the cooling water cavity facing the inner peripheral surface form parallel surfaces with each other, and a cooling wall of the mold between the inner peripheral surface and the inner bottom surface is formed so that the heat flux value per unit area from the molten aluminum alloy to the cooling water is 10×105 W/m2 or more.
    Type: Application
    Filed: July 11, 2022
    Publication date: January 26, 2023
    Applicant: SHOWA DENKO K.K.
    Inventor: Yoshifumi KIMURA
  • Publication number: 20230026839
    Abstract: The present invention aims to provide a lithium ion-conducting oxide capable of providing a solid electrolyte with an excellent ion conductivity, and a solid electrolyte, a sintered body, an electrode material or an electrode and an all-solid-state battery using the same. The lithium ion-conducting oxide of the present invention includes at least lithium, tantalum, phosphorus, silicon, and oxygen as constituent elements, has a peak in a region of ?20.0 ppm to 0.0 ppm on the solid-state 31P-NMR spectrum, and has a peak in a range of ?80.0 ppm to ?100.0 ppm on the solid-state 29Si-NMR spectrum.
    Type: Application
    Filed: December 25, 2020
    Publication date: January 26, 2023
    Applicant: SHOWA DENKO K.K.
    Inventors: Ryosuke SEI, Kunchan LEE
  • Patent number: 11561266
    Abstract: Reduction of the S/N in an output from a magnetic sensor using the magnetic impedance effect is suppressed. A magnetic sensor 1 is provided with a sensitive element 31 including: plural soft magnetic material layers 105; and a nonmagnetic amorphous metal layer 106 provided between the plural soft magnetic material layers 105, wherein the soft magnetic material layers 105 facing each other with the nonmagnetic amorphous metal layer 106 interposed therebetween are antiferromagnetically coupled to sense a magnetic field by a magnetic impedance effect.
    Type: Grant
    Filed: September 2, 2021
    Date of Patent: January 24, 2023
    Assignee: SHOWA DENKO K.K.
    Inventors: Daizo Endo, Akira Sakawaki
  • Patent number: 11561469
    Abstract: A black positive-type photosensitive resin composition with high sensitivity is provided. The photosensitive resin composition of the invention includes (A) a binder resin, (B) a quinonediazide adduct of a phenol compound having 3 or more phenolic hydroxyl groups (hereunder also referred to as “trivalent or greater phenol compound”, and (C) a black coloring agent, wherein the quinonediazide adduct (B) includes (b1) a quinonediazide adduct wherein one of the hydroxyl groups of the phenolic hydroxyl groups of the trivalent or greater phenol compound is replaced by a structure represented by formula (I) or formula (II), and (b2) a quinonediazide adduct wherein two of the hydroxyl groups of the phenolic hydroxyl groups of the trivalent or greater phenol compound are replaced by structures represented by formula (I) or formula (II), and the total of (b1) and (b2) is at least 60 mol % of the entirety of (B). Ra to Rd and * in the formulas are as defined in the Specification.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: January 24, 2023
    Assignee: SHOWA DENKO K.K.
    Inventors: Kentaro Furue, Yuki Miyaishi, Shiyuko Nakamura
  • Publication number: 20230017483
    Abstract: The present invention aims to provide a lithium-ion-conducting oxide sintered body capable of providing a solid electrolyte with an excellent ion conductivity, and a solid electrolyte, an electrode and an all-solid-state battery using the same. The lithium-ion-conducting oxide sintered body including at least lithium, tantalum, phosphorus, silicon, and oxygen as constituent elements, and having a polycrystalline structure consisting of crystal grains and grain interfaces formed between the crystal grains.
    Type: Application
    Filed: December 25, 2020
    Publication date: January 19, 2023
    Applicant: SHOWA DENKO K.K.
    Inventors: Ryosuke SEI, Kunchan LEE
  • Publication number: 20230020837
    Abstract: A magnetic sensor includes: a sensitive layer made of a soft magnetic material with uniaxial magnetic anisotropy, the sensitive layer being configured to sense a magnetic field by a magnetic impedance effect; and a magnet layer made of a magnetized hard magnetic material and disposed to face the sensitive layer. The magnet layer is configured to apply a DC magnetic bias Hb in a direction intersecting a direction of the uniaxial magnetic anisotropy in the sensitive layer, the DC magnetic bias Hb having a greater value than an anisotropic magnetic field Hk of the sensitive layer.
    Type: Application
    Filed: November 17, 2020
    Publication date: January 19, 2023
    Applicant: SHOWA DENKO K.K.
    Inventors: Daizo ENDO, Tatsunori SHINO
  • Patent number: 11555005
    Abstract: A fluorine-containing ether compound according to the present invention is a fluorine-containing ether compound represented by the following General Formula (1).
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: January 17, 2023
    Assignee: SHOWA DENKO K.K.
    Inventors: Naoya Fukumoto, Ryuuta Miyasaka, Hiroyuki Tomita, Michio Seri, Naoko Ito, Katsumi Murofushi
  • Publication number: 20230009139
    Abstract: A magnetic sensor includes: plural sensitive elements 31 each including a soft magnetic material layer 105 having a longitudinal direction and a transverse direction and a conductor layer having higher conductivity than the soft magnetic material layer 105 and extending through the soft magnetic material layer 105 in a longitudinal direction, the sensitive element 31 having uniaxial magnetic anisotropy in a direction intersecting the longitudinal direction and being configured to sense a magnetic field by a magnetic impedance effect; and a connecting portion 32 continuous with the conductor layer of the sensitive element and configured to connect transversely adjacent sensitive elements 31 in series.
    Type: Application
    Filed: November 17, 2020
    Publication date: January 12, 2023
    Applicant: SHOWA DENKO K.K.
    Inventors: Daizo ENDO, Tatsunori SHINO, Akira SAKAWAKI, Sho TONEGAWA, Yasumasa WATANABE
  • Patent number: 11551712
    Abstract: A base for a magnetic recording medium, includes an aluminum alloy substrate, and a nickel alloy film provided on at least one principal surface of the aluminum alloy substrate. The nickel alloy film includes Mo in a range of 0.5 wt % to 3 wt %, P in a range of 11 wt % to 15 wt %, and Al in a range of 0.001 wt % to 0.1 wt %.
    Type: Grant
    Filed: July 27, 2021
    Date of Patent: January 10, 2023
    Assignee: SHOWA DENKO K.K.
    Inventors: Wataru Sato, Hideki Tomosue, Norihisa Watanabe
  • Patent number: 11551713
    Abstract: A base for a magnetic recording medium, includes an aluminum alloy substrate, and a nickel alloy film provided on at least one principal surface of the aluminum alloy substrate. The nickel alloy film includes Mo in a range of 0.5 wt % to 3 wt %, P in a range of 11 wt % to 15 wt %, and Fe in a range of 0.0001 wt % to 0.001 wt %.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: January 10, 2023
    Assignee: SHOWA DENKO K.K.
    Inventors: Wataru Sato, Hideki Tomosue, Norihisa Watanabe
  • Publication number: 20230002696
    Abstract: This fluorine-containing ether compound is represented by formula (1) shown below. R1—CH2—R2—CH2—R3??(1) In formula (1), R2 is a perfluoropolyether chain represented by a formula (2) shown below. R1 is a terminal group that is bonded to R2 via a CH2 group, and is represented by a formula (3) shown below. R3 is bonded to R2 via a CH2 group, is a terminal group having at least one hydroxyl group, and may be the same as, or different from, R1. —(CF2)p-1—O—((CF2)pO)q—(CF2)p-1—??(2) In formula (2), p represents an integer of 2 to 3, and q indicates the average polymerization degree and is a number within a range from 1 to 20. —O(CH2—CH(OH)—CH2—O)2—CH2—(CH2)n,—OH??(3) In formula (3), n represents an integer of 1 to 8.
    Type: Application
    Filed: November 6, 2020
    Publication date: January 5, 2023
    Applicant: SHOWA DENKO K.K.
    Inventors: Tsuyoshi KATO, Ayano ASANO, Natsumi SHIBATA, Daisuke YAGYU
  • Patent number: 11545176
    Abstract: A magnetic recording medium includes a substrate, and a magnetic recording layer including magnetic grains having an L10 structure. The magnetic recording layer is (001) oriented, and a surface of growth of the magnetic recording layer includes a (001) plane, a (111) plane, and planes equivalent to the (111) plane. An area ratio of the (111) plane and the planes equivalent to the (111) plane, represented by (A111+A111e)/(A001+A111+A111e), is in a range of 0.2 to 0.7, where A111 denotes an area of the (111) plane, A111e denotes an area of the planes equivalent to the (111) plane, and A001 denotes an area of the (001) plane.
    Type: Grant
    Filed: April 5, 2022
    Date of Patent: January 3, 2023
    Assignee: SHOWA DENKO K.K.
    Inventors: Takayuki Fukushima, Tomoo Shige, Yuji Umemoto, Kazuya Niwa
  • Patent number: 11542631
    Abstract: A method for producing a p-type 4H—SiC single crystal includes sublimating a nitrided aluminum raw material and a SiC raw material. Further, there is a stacking of a SiC single crystal, which is co-doped with aluminum and nitrogen, on one surface of a seed crystal.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: January 3, 2023
    Assignees: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, SHOWA DENKO K.K., DENSO CORPORATION
    Inventors: Kazuma Eto, Tomohisa Kato, Hiromasa Suo, Yuichiro Tokuda
  • Patent number: 11538603
    Abstract: Provided is a transparent conducting film containing metal nanowires, the conducting film having a preferable optical property, electrical property, and having almost no in-plane resistance anisotropy. A method for producing a transparent conducting film provided with a conducting layer containing a metal nanowire and a binder resin, comprising steps of: preparing a coating liquid containing the metal nanowire and the binder resin, and coating the coating liquid on one main face of a transparent substrate, the coating step being performed by a bar-coater with a bar which has a bar surface constituted by a material having a friction coefficient of 0.05 to 0.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: December 27, 2022
    Assignee: SHOWA DENKO K.K.
    Inventors: Shigeru Yamaki, Shuhei Yoneda
  • Patent number: 11535047
    Abstract: Provided is a transparent conducting film having a favorable optical property, favorable electrical property, and almost no in-plane resistance anisotropy. A method for producing a transparent conducting film provided with a conducting layer containing a metal nanowire and a binder resin, comprises steps of: preparing a coating liquid containing the metal nanowire and the binder resin, and coating the coating liquid on one main face of a transparent substrate, wherein, in the coating step, a bar-coat printing method is performed using a bar provided with a groove having a pitch (P) and a depth (H) which satisfy a ratio P/H of 5 to 30.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: December 27, 2022
    Assignee: SHOWA DENKO K.K.
    Inventor: Shigeru Yamaki
  • Publication number: 20220404439
    Abstract: An information processing device and a magnetic sensor system are provided, in which accuracy of frequency measurement is less likely to deteriorate even though the frequency of output signals outputted from the magnetic sensor increases, and which have detection limits for high frequency measurement even with a minute frequency change rate. An information processing device 120 includes: an obtaining part 31 obtaining an output signal outputted by a magnetic sensor and oscillating at a frequency determined in response to strength of a magnetic field; a frequency determination part 32 utilizing interference between the output signal and a reference signal with a reference frequency, which is a frequency used as a reference, to determine the frequency of the output signal; and a magnetic field calculation part 40 calculating the strength of the magnetic field based on the determined frequency of the output signal.
    Type: Application
    Filed: June 21, 2022
    Publication date: December 22, 2022
    Applicant: SHOWA DENKO K.K.
    Inventor: Hiroyuki TOMITA