Patents by Inventor Shinsuke TAKATANI

Shinsuke TAKATANI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20220025228
    Abstract: Provided is an electric motor using a laminated core in which punched electrical steel sheets are adhered to each other with a high adhesion strength. The laminated core includes: a plurality of electrical steel sheets which are stacked on each other and of which both surfaces are coated with an insulation coating; and an adhesion part which is disposed between the electrical steel sheets adjacent to each other in a stacking direction and adheres the electrical steel sheets to each other, wherein all sets of the electrical steel sheets adjacent to each other in the stacking direction are adhered to each other by the adhesion parts, wherein the adhesion parts are provided at a plurality of positions between the electrical steel sheets, and wherein the adhesion part is a layer made of an adhesive containing any one or both of an acrylic resin and an epoxy resin and having an SP value of 7.8 to 10.7 (cal/cm3)1/2.
    Type: Application
    Filed: December 17, 2019
    Publication date: January 27, 2022
    Inventors: Shinsuke TAKATANI, Hiroyasu FUJII, Kazutoshi TAKEDA
  • Publication number: 20220029478
    Abstract: A laminated core includes a plurality of electrical steel sheets which are stacked on each other and of each of which both surfaces are coated with an insulation coating; and an adhesion part which is provided between the electrical steel sheets adjacent in the stacking direction and adheres the electrical steel sheets to each other, wherein an adhesive for forming the adhesion part includes a first phase and a second phase, wherein the adhesion part has a sea-island structure of the first phase which is a sea structure portion and the second phase which is an island structure portion, wherein the first phase contains an epoxy resin, an acrylic resin, and a curing agent, wherein the first phase has an SP value of 8.5 to 10.7 (cal/cm3)1/2, wherein the second phase contains an elastomer, and wherein the second phase has an SP value of 7.5 to 8.4 (cal/cm3)1/2.
    Type: Application
    Filed: December 17, 2019
    Publication date: January 27, 2022
    Inventors: Shinsuke TAKATANI, Hiroyasu FUJII, Kazutoshi TAKEDA
  • Patent number: 11225706
    Abstract: A grain-oriented electrical steel sheet includes a steel sheet and an amorphous oxide layer that is formed on the steel sheet, in which the steel sheet includes, as a chemical composition, by mass %, C: 0.085% or less, Si: 0.80% to 7.00%, Mn: 1.50% or less, acid-soluble Al: 0.065% or less, S: 0.013% or less, Cu: 0% to 0.80%, N: 0% to 0.012%, P: 0% to 0.50%, Ni: 0% to 1.00%, Sn: 0% to 0.30%, Sb: 0% to 0.30%, and a remainder of Fe and impurities, and a NSIC value of a surface is 4.0% or more, the NSIC value being obtained by measuring an image clearness of the surface using an image clearness measuring device.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: January 18, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Shinsuke Takatani, Kenichi Murakami, Yoshiyuki Ushigami, Shunsuke Okumura, Shohji Nagano
  • Publication number: 20210398734
    Abstract: An adhesively-laminated core includes: a plurality of electrical steel sheets which are stacked on each other and of which both surfaces are coated with an insulation coating; and an adhesion part which is provided between the electrical steel sheets adjacent to each other in a stacking direction and adheres the electrical steel sheets to each other, wherein an adhesive forming the adhesion part contains an organic resin and an inorganic filler, wherein a 50% particle size of the inorganic filler is 0.2 to 3.5 ?m, wherein a 90% particle size of the inorganic filler is 10.0 ?m or less, and wherein an amount of the inorganic filler is 5 to 50 parts by mass with respect to 100 parts by mass of the organic resin.
    Type: Application
    Filed: December 17, 2019
    Publication date: December 23, 2021
    Inventors: Hiroyasu FUJII, Shinsuke TAKATANI, Kazutoshi TAKEDA
  • Publication number: 20210381072
    Abstract: [Problem] To provide: a coating liquid for forming an insulation coating for grain-oriented electrical steel sheets, which enables the achievement of excellent coating properties including high coating tension and excellent corrosion resistance even without using a chromium compound; a grain-oriented electrical steel sheet; and a method for producing a grain-oriented electrical steel sheet. [Solution] A coating liquid for forming an insulation coating for grain-oriented electrical steel sheets, which contains boric acid and hydrated silicate particles containing aluminum.
    Type: Application
    Filed: October 2, 2019
    Publication date: December 9, 2021
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Shuichi YAMAZAKI, Shinsuke TAKATANI, Hiroyasu FUJII, Kazutoshi TAKEDA
  • Patent number: 11189407
    Abstract: A grain-oriented electrical steel sheet includes: a steel sheet; and an amorphous oxide layer that is formed on the steel sheet, in which a glossiness of a surface is 150% or higher.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: November 30, 2021
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Shinsuke Takatani, Yoshiyuki Ushigami, Hiroyasu Fujii, Shuichi Nakamura, Takeshi Imai
  • Publication number: 20210317542
    Abstract: In a base sheet for a grain-oriented electrical steel sheet of the present invention, an amount of surface oxygen x per one surface of the base sheet and a value y of a peak (?R/R0 @1250 cm?1) of SiO2 on the surface of the base sheet obtained by infrared reflection spectroscopy satisfy y?1500x2.5 and y?0.24. A method of manufacturing the base sheet for a grain-oriented electrical steel sheet of the present invention includes: adjusting the amount of surface oxygen per one surface of a final-annealed grain-oriented silicon steel sheet to more than 0.01 g/m2 and 0.05 g/m2 or less, or more than 0.05 g/m2 and 0.10 g/m2 or less; and performing thermal oxidation annealing in an atmosphere in which an oxidation potential represented by a ratio PH2O/PH2 of water vapor pressure to hydrogen pressure is 0.0081 or less in a case where the amount of surface oxygen is more than 0.01 g/m2 and 0.05 g/m2 or less, or in an atmosphere in which the oxidation potential is 0.
    Type: Application
    Filed: July 13, 2018
    Publication date: October 14, 2021
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Shuichi NAKAMURA, Seiki TAKEBAYASHI, Yoshiyuki USHIGAMI, Shinsuke TAKATANI, Hiroyasu FUJII
  • Patent number: 11145446
    Abstract: A grain-oriented electrical steel sheet includes: a steel sheet; an oxide layer including SiO2 that is formed on the steel sheet; and a tension-insulation coating that is formed on the oxide layer, in which the steel sheet includes, as a chemical composition, by mass %, C: 0.085% or less, Si: 0.80% to 7.00%, Mn: 1.00% or less, acid-soluble Al: 0.065% or less, S: 0.013% or less, Cu: 0% to 0.80%, N: 0% to 0.012%, P: 0% to 0.50%, Ni: 0% to 1.00%, Sn: 0% to 0.30%, Sb: 0% to 0.30%, and a remainder of Fe and impurities, the tension-insulation coating includes a chromium compound, and the Fe content in the oxide layer and the tension-insulation coating is 70 mg/m2 to 250 mg/m2.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: October 12, 2021
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Shinsuke Takatani, Shunsuke Okumura, Shohji Nagano, Takashi Kataoka
  • Publication number: 20200203047
    Abstract: A grain-oriented electrical steel sheet includes: a steel sheet; and an amorphous oxide layer that is formed on the steel sheet, in which a glossiness, of a surface is 150% or higher.
    Type: Application
    Filed: July 13, 2018
    Publication date: June 25, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Shinsuke TAKATANI, Yoshiyuki USHIGAMI, Hiroyasu FUJII, Shuichi NAKAMURA, Takeshi IMAI
  • Publication number: 20200190644
    Abstract: A grain-oriented electrical steel sheet includes a steel sheet and an amorphous oxide layer that is formed on the steel sheet, in which the steel sheet includes, as a chemical composition, by mass %, C: 0.085% or less, Si: 0.80% to 7.00%, Mn: 1.50% or less, acid-soluble Al: 0.065% or less, S: 0.013% or less, Cu: 0% to 0.80%, N: 0% to 0.012%, P: 0% to 0.50%, Ni: 0% to 1.00%, Sn: 0% to 0.30%, Sb: 0% to 0.30%, and a remainder of Fe and impurities, and a NSIC value of a surface is 4.0% or more, the NSIC value being obtained by measuring an image clearness of the surface using an image clearness measuring device.
    Type: Application
    Filed: July 13, 2018
    Publication date: June 18, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Shinsuke TAKATANI, Kenichi MURAKAMI, Yoshiyuki USHIGAMI, Shunsuke OKUMURA, Shohji NAGANO
  • Publication number: 20200176156
    Abstract: A grain-oriented electrical steel sheet includes: a steel sheet; an oxide layer including SiO2 that is formed on the steel sheet; and a tension-insulation coating that is formed on the oxide layer, in which the steel sheet includes, as a chemical composition, by mass %, C: 0.085% or less, Si: 0.80% to 7.00%, Mn: 1.00% or less, acid-soluble Al: 0.065% or less, S: 0.013% or less, Cu: 0% to 0.80%, N: 0% to 0.012%, P: 0% to 0.50%, Ni: 0% to 1.00%, Sn: 0% to 0.30%, Sb: 0% to 0.30%, and a remainder of Fe and impurities, the tension-insulation coating includes a chromium compound, and the Fe content in the oxide layer and the tension-insulation coating is 70 mg/m2 to 250 mg/m2.
    Type: Application
    Filed: July 13, 2018
    Publication date: June 4, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Shinsuke TAKATANI, Shunsuke OKUMURA, Shohji NAGANO, Takashi KATAOKA
  • Publication number: 20200123662
    Abstract: A grain-oriented electrical steel sheet includes: a base steel sheet; an intermediate layer arranged in contact with the base steel sheet; and an insulation coating arranged in contact with the intermediate layer to be an outermost surface, in which the insulation coating has a crystalline phosphide-containing layer containing a crystalline phosphide in an area in contact with the intermediate layer when viewing a cross section whose cutting direction is parallel to a thickness direction.
    Type: Application
    Filed: July 13, 2018
    Publication date: April 23, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Seiki TAKEBAYASHI, Shuichi NAKAMURA, Hiroyasu FUJII, Yoshiyuki USHIGAMI, Shinsuke TAKATANI
  • Publication number: 20200126698
    Abstract: A grain-oriented electrical steel sheet includes: a base steel sheet; an intermediate layer arranged in contact with the base steel sheet; and an insulation coating arranged in contact with the intermediate layer to be an outermost surface, in which the intermediate layer has a local oxidized area when viewing a cross section whose cutting direction is parallel to a thickness direction, and a thickness of the intermediate layer in an area where the local oxidized area is included is 50 nm or more, and a thickness of the intermediate layer in an area where the local oxidized area is not included is less than 50 nm.
    Type: Application
    Filed: July 13, 2018
    Publication date: April 23, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Seiki TAKEBAYASHI, Shuichi NAKAMURA, Hiroyasu FUJII, Yoshiyuki USHIGAMI, Shinsuke TAKATANI
  • Publication number: 20200123632
    Abstract: An grain-oriented electrical steel sheet according to the present invention includes: a base steel sheet; an oxide layer that is formed on the base steel sheet and is formed of amorphous SiO2; and a tension-insulation coating that is formed on the oxide layer. The base steel sheet includes, as a chemical composition, by mass %. C: 0.085% or less, Si: 0.80% to 7.00%, Mn: 1.00% or less, acid-soluble Al: 0.065% or less. Seq represented by S+0.406.Se: 0.050% or less, and a remainder consisting of Fe and unavoidable impurities. FWHM that is a half width of a peak of cristobalite type aluminum phosphate obtained by X-ray diffraction satisfies (i) when X-ray diffraction is performed using a Co—K? excitation source, a half width (FWHM-Co) of a peak appearing at 2?=24.8° is 2.5 degree or less, or (ii) when X-ray diffraction is performed using a Cu—K? excitation source, a half width (FWHM-Cu) of a peak appearing at 2?=21.3° is 2.1 degree or less.
    Type: Application
    Filed: July 13, 2018
    Publication date: April 23, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Shinsuke TAKATANI, Masaru TAKAHASHI, Kazumi MIZUKAMI, Shunsuke OKUMURA, Shohji NAGANO