Patents by Inventor Masaru Takahashi

Masaru Takahashi 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).

  • Patent number: 11591668
    Abstract: Grain-oriented electrical steel sheet excellent in magnetic properties and excellent in adhesion of a primary coating to the steel sheet is provided. The grain-oriented electrical steel sheet is provided with a base steel sheet having a chemical composition containing C: 0.005% or less, Si: 2.5 to 4.5%, Mn: 0.050 to 1.000%, a total of S and Se: 0.005% or less, sol. Al: 0.005% or less, and N: 0.005% or less and having a balance of Fe and impurities and a primary coating having Mg2 SiO4 as a main constituent formed on a surface of the base steel sheet. A peak position of Al emission intensity obtained when conducting elemental analysis by glow discharge spectrometry from a surface of the primary coating in a thickness direction is present in a range of 2.0 to 12.0 ?m from a surface of the primary coating to the thickness direction. A sum of perimeters of the Al oxides at the peak position of Al emission intensity is 0.20 to 1.00 ?m/?m2, and a number density of Al oxides is 0.02 to 0.20/?m2.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: February 28, 2023
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Ichiro Tanaka, Ryutaro Yamagata, Nobusato Morishige, Takashi Kataoka, Masaru Takahashi
  • Patent number: 11535943
    Abstract: A grain-oriented electrical steel sheet has a steel sheet and an insulating coating which is formed on a surface of the steel sheet. In the insulating coating, a metal phosphate and a colloidal silica are contained, the colloidal silica is contained in an amount of 20 to 150 parts by mass with respect to 100 parts by mass of the metal phosphate, one or more kinds of fine particles selected from the group consisting of silicon carbide, silicon nitride, aluminum nitride, boron nitride, sialon, and cordierite are further contained in an amount of 0.5 to 7 parts by mass with respect to 100 parts by mass of the metal phosphate, an average particle size of the fine particles is 0.3 to 7.0 ?m, crystallized ratio of the metal phosphate is 2% to 40%, and chromium is not contained.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: December 27, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Kazutoshi Takeda, Tomoya Suenaga, Shuichi Yamazaki, Masaru Takahashi
  • Publication number: 20220402271
    Abstract: A cap includes a holder and a body fitted into the holder. The body covers a nozzle surface such that an enclosed space is defined between the body and the nozzle surface. The holder includes a first side wall extending upward from a first bottom wall and having a frame shape in a plan view, and a protrusion on an inner surface of the first side wall and extending in an up-down direction. The body includes a second side wall extending upward from a second bottom wall and having a frame shape in the plan view, a lip on an upper end of the second side wall and contactable with the nozzle surface, and a recessed groove in an outer surface of the second side wall, extending in the up-down direction, and in engagement with the protrusion.
    Type: Application
    Filed: June 13, 2022
    Publication date: December 22, 2022
    Inventors: Yu KAMIYAMA, Hisaya MATSUOKA, Masaru TAKAHASHI
  • Publication number: 20220373918
    Abstract: A toner for developing an electrostatic charge image includes toner particles that include a binder resin, a releasing agent, a brilliant pigment, and an aminocarboxylic acid compound.
    Type: Application
    Filed: August 26, 2021
    Publication date: November 24, 2022
    Applicant: FUJIFILM BUSINESS INNOVATION CORP.
    Inventors: Asafumi FUJITA, Yukiaki NAKAMURA, Masaru TAKAHASHI
  • Publication number: 20220373905
    Abstract: An electrostatic charge image developing toner includes a toner particle, and the toner particle includes: a core particle containing a large-diameter particle having a number average particle diameter of 1 ?m or more; and a shell layer that includes at least two resin layers each containing an amorphous resin and covers a surface of the core particles, and an outermost layer of the at least two resin layers is a resin layer being made of the amorphous resin.
    Type: Application
    Filed: August 17, 2021
    Publication date: November 24, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Yukiaki NAKAMURA, Daisuke NOGUCHI, Masaru TAKAHASHI, Kazuhiko NAKAMURA
  • Publication number: 20220373912
    Abstract: A method for producing a resin fine particle includes dissolving or melting an oily mixture containing at least a polyester resin, a base, and a basic dye while applying a shearing force to the oily mixture, and emulsifying the dissolved or molten oily mixture by adding a surfactant and an aqueous medium while applying a shearing force to the dissolved or molten oily mixture to prepare a dispersion liquid of the resin fine particle. The resin fine particle includes the polyester resin and the basic dye, has a volume average particle diameter of 0.05 ?m or more and 1 ?m or less, and has a ratio of a concentration of the basic dye in a center of gravity portion of the resin fine particle to a concentration of the basic dye in a surface layer portion having a depth of 10 nm or less from a surface of the resin fine particle of 0.8 or more.
    Type: Application
    Filed: July 27, 2022
    Publication date: November 24, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Daisuke TOMITA, Takahiro YAMASHITA, Yukiaki NAKAMURA, Takahisa TATEKAWA, Masaru TAKAHASHI
  • Publication number: 20220341043
    Abstract: There is provided a non-oriented electrical steel sheet that includes a base metal steel sheet and an insulating coating film that is formed on a surface of the base metal steel sheet, wherein the insulating coating film mainly contains metal phosphate, organic resin, and water-soluble organic compound, the water-soluble organic compound has an SP value that is within a range of 10.0 to 20.
    Type: Application
    Filed: September 18, 2020
    Publication date: October 27, 2022
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Kazutoshi TAKEDA, Shuichi YAMAZAKI, Takuya MATSUMOTO, Hiroyasu FUJII, Masaru TAKAHASHI
  • Publication number: 20220336129
    Abstract: There is provided a non-oriented electrical steel sheet that includes a base metal steel sheet and an insulating coating film that is formed on a surface of the base metal steel sheet, wherein the insulating coating film mainly contains metal phosphate, organic resin, and water-soluble organic compound, the metal phosphate contains at least aluminum as a metallic element, the organic resin has an SP value being within a range of 18.0 (MPa)0.5 or more to less than 24.0 (MPa)0.5, the water-soluble organic compound has an SP value being within a range of 19.0 (MPa)0.5 or more to less than 35.0 (MPa)0.5, and when measurement by X-ray diffractometry is performed on the insulating coating film, a degree of crystallinity of aluminum phosphate calculated from a peak from the metal phosphate is within a range of 0.5 to 5.0%.
    Type: Application
    Filed: September 18, 2020
    Publication date: October 20, 2022
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Kazutoshi TAKEDA, Shuichi YAMAZAKI, Takuya MATSUMOTO, Hiroyasu FUJII, Masaru TAKAHASHI
  • Patent number: 11469017
    Abstract: A grain oriented electrical steel sheet includes: a base steel sheet; a lower layer which is arranged in contact with the base steel sheet; and an insulation coating which is arranged in contact with the lower layer and which includes a phosphate and a colloidal silica as main components. The base steel sheet includes the predetermined chemical composition and includes a B compound whose major axis length is 1 to 20 ?m and whose number density is 1×10 to 1×106 pieces/mm3. The lower layer is a glass film which includes a forsterite as main component or an intermediate layer includes a silicon oxide as main component.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: October 11, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Masato Yasuda, Masaru Takahashi, Yoshiyuki Ushigami, Shinya Yano
  • Patent number: 11466338
    Abstract: A grain oriented electrical steel sheet includes: a base steel sheet; a glass film which is arranged in contact with the base steel sheet; and an insulation coating which is arranged in contact with the glass film and which includes a phosphate and a colloidal silica as main components. The base steel sheet includes the predetermined chemical composition. A BN whose average particle size is 50 to 300 nm is included at a predetermined number density in a region which is from an interface between the glass film and the insulation coating till 5 ?m toward the base steel sheet in a depth direction. A B emission intensity obtained inside the glass film is more than a B emission intensity obtained inside the base steel sheet, when a B emission intensity is measured from a surface of the insulation coating by a glow discharge emission spectroscopy.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: October 11, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Masato Yasuda, Yoshiyuki Ushigami, Masaru Takahashi, Shinya Yano
  • Publication number: 20220308484
    Abstract: A method for producing a toner for developing an electrostatic charge image includes: performing first aggregation that involves, in a dispersion containing first amorphous resin particles, aggregating at least the first amorphous resin particles; performing second aggregation that involves, in a dispersion that contains second amorphous resin particles and first aggregated particles obtained by aggregating the first amorphous resin particles, aggregating the second amorphous resin particles around the first aggregated particles; and heating a dispersion that contains second aggregated particles obtained by aggregating the second amorphous resin particles around the first aggregated particles so as to fuse and coalesce the second aggregated particles and form toner particles, in which a volume-average particle diameter DB of the second amorphous resin particles is smaller than a volume-average particle diameter DA of the first amorphous resin particles, and the first amorphous resin particles have a glass tra
    Type: Application
    Filed: August 31, 2021
    Publication date: September 29, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Ryutaro KEMBO, Yukiaki NAKAMURA, Masaru TAKAHASHI
  • Patent number: 11440846
    Abstract: A solution for forming an insulation coating of grain-oriented electrical steel sheet includes an aqueous solution prepared by mixing a phosphate solution and colloidal silica. Chromium is not added to the aqueous solution. The colloidal silica includes silica particles surface-modified by an aluminate or is prepared by adding an aluminate to colloidal silica such as conventional colloidal silica.
    Type: Grant
    Filed: May 27, 2013
    Date of Patent: September 13, 2022
    Assignee: Nippon Steel Corporation
    Inventors: Regis Lemaitre, Ludger Lahn, Carsten Schepers, Shuichi Yamazaki, Kazutoshi Takeda, Masaru Takahashi, Hirohiko Sato, Koji Kanehashi
  • Patent number: 11421297
    Abstract: A non-oriented electrical steel sheet includes a silicon steel sheet and an insulation coating. When t is a thickness of the silicon steel sheet and when PDR is defined as (PDR=(maximum?minimum)/minimum×100) which indicates a ratio concerned with maximum and minimum of number densities of AlN precipitates in three areas which are 1/10t area, ?t area, and ½t area from a surface of the silicon steel sheet along a thickness direction, the PDR is 50% or less.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: August 23, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takeru Ichie, Masaru Takahashi, Fuminobu Murakami, Shinichi Matsui, Masahiro Yamamoto
  • Publication number: 20220244654
    Abstract: A toner for electrostatic image development includes toner particles containing a binder resin including an amorphous resin and a crystalline resin, a dye, and a release agent. The percentage of the crystalline resin on the surface of the toner particles as measured by X-ray photoelectron spectroscopy is 15% or less.
    Type: Application
    Filed: September 30, 2021
    Publication date: August 4, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Tomoaki TANAKA, Masaru TAKAHASHI, Yukiaki NAKAMURA, Ryutaro KEMBO, Kana NAGASHIMA
  • Publication number: 20220244655
    Abstract: A toner for electrostatic image development includes toner particles containing a binder resin, a dye, and a release agent. When a cross section of the toner particles is observed, the percentage of the release agent present in regions whose distances from the surfaces of the toner particles are 400 nm or less is from 25% to 50% inclusive with respect to the total amount of the release agent.
    Type: Application
    Filed: October 1, 2021
    Publication date: August 4, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Kana NAGASHIMA, Masaru TAKAHASHI, Yukiaki NAKAMURA, Ryutaro KEMBO, Tomoaki TANAKA
  • Publication number: 20220229047
    Abstract: The present invention provides a linked body for fluorescent labeling agents, the linked body suppressing noise due to specific adsorption in performing quantification and localization analysis of a target substance. The present invention is a linked body for fluorescent labeling agents obtained by bonding a probe molecule to a bonding group via a linker, in which a labeling ratio of the bonding group to the probe molecule is 3 or more.
    Type: Application
    Filed: June 15, 2020
    Publication date: July 21, 2022
    Inventors: YUKI MIYAKE, DAISUKE TOMIOKA, MASARU TAKAHASHI
  • Patent number: 11391728
    Abstract: The present invention may provide phosphor-integrated nanoparticles whose precipitation and/or aggregation, particularly aggregation can be inhibited upon carrying out immunostaining therewith and which can thus be used for staining even after long-term storage without requiring a complicated operation, the phosphor-integrated nanoparticles preferrably maintaining excellent performance, such as staining properties, even after long-term storage. The phosphor-integrated nanoparticles of the present invention have an average sphericity (f) of 0.80 to 0.95 and preferably have an average circumference ratio (R) of 0.50 to 0.95.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: July 19, 2022
    Assignee: KONICA MINOLTA, INC.
    Inventors: Takeshi Isoda, Masaru Takahashi
  • Patent number: 11346784
    Abstract: A method of storing fluorescent dye-containing resin particles comprising adding the fluorescent dye-containing resin particles in a liquid comprising a buffer, a protein, and a surfactant, thereby obtaining a particle-containing liquid. The rate of change in the backscatter intensity (transmitted light) at the center of the height of the particle-containing liquid left to stand for 24 hours after the adding is not less than ?1% based on the particle-containing liquid immediately after the adding.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: May 31, 2022
    Assignee: KONICA MINOLTA, INC.
    Inventors: Masaru Takahashi, Fuminori Okada
  • Publication number: 20220154304
    Abstract: A non oriented electrical steel sheet consists of a silicon steel sheet and an insulation coating. The silicon steel sheet includes an internally oxidized layer containing SiO2 in a surface thereof, an average thickness of the internally oxidized layer is 0.10 to 5.0 ?m, and a vickers hardness in the internally oxidized layer is 1.15 to 1.5 times as compared with a vickers hardness in a thickness central area.
    Type: Application
    Filed: March 20, 2019
    Publication date: May 19, 2022
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Masaru TAKAHASHI, Takeru ICHIE, Tesshu MURAKAWA, Shinichi MATSUI, Fuminobu MURAKAMI
  • Patent number: 11332831
    Abstract: An insulating coating for an electrical steel sheet is provided that is formed on a surface of a base metal of the electrical steel sheet and that contains a polyvalent metal phosphate of one or more elements selected from Al, Zn, Mg and Ca, and has an enriched layer of a divalent metal at an interface with the surface of the base metal. An enrichment of the divalent metal contained in the enriched layer is 0.01 g/m2 or more and less than 0.2 g/m2.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: May 17, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Shuichi Yamazaki, Masaru Takahashi, Kazutoshi Takeda, Hiroyasu Fujii, Akira Akagi, Hiroki Hori