Patents by Inventor Shintaro Yamanaka

Shintaro Yamanaka 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: 20220389590
    Abstract: To provide a Sn-based plated steel sheet excellent in yellowing resistance, coating film adhesiveness, and sulfurization blackening resistance without performing the conventional chromate treatment. A Sn-based plated steel sheet of the present invention includes: a steel sheet; a Sn-based plating layer located on at least one surface of the steel sheet; and a coating layer located on the Sn-based plating layer, wherein: the Sn-based plating layer contains 0.10 to 15.00 g/m2 of Sn per side in terms of metal Sn; the coating layer contains a Zr oxide and a Mn oxide; a content of the Zr oxide is 0.20 to 50.00 mg/m2 per side in terms of metal Zr; a content of the Mn oxide in terms of metal Mn is 0.01 to 0.
    Type: Application
    Filed: December 19, 2019
    Publication date: December 8, 2022
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Shintaro YAMANAKA, Shigeru HIRANO
  • Patent number: 11021806
    Abstract: A Sn-plated steel sheet according to the present invention includes a steel sheet, a Sn-plated layer that is provided on at least one surface of the steel sheet, and a film that is provided on a surface of the Sn-plated layer and includes zirconium oxide and tin oxide, in which an amount of the zirconium oxide in the film is 0.2 mg/m2 to 50 mg/m2 in terms of metal Zr amount, in a depth direction analysis by X-ray photoelectron spectroscopy, a depth position A at which an element concentration of Zr present as the zirconium oxide is maximum is positioned closer to a surface of the film than a depth position B at which an element concentration of Sn present as the tin oxide is maximum, and a distance between the depth position A and the depth position B in a depth direction is 0.5 nm or more.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: June 1, 2021
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Shintaro Yamanaka, Shigeru Hirano, Masakazu Noda, Yasuhiko Sato
  • Patent number: 10914017
    Abstract: The Sn-plated steel sheet of the disclosure is an Sn-plated steel sheet including: a steel sheet; an Sn plating layer formed on at least one side of the steel sheet and containing, based on % by mass, from 0.1 g/m2 to 15 g/m2 of metal Sn; and a coating layer formed on the surface of the Sn plating layer and containing zirconium oxide and tin oxide; in which the content of the zirconium oxide in the coating layer is from 0.2 mg/m2 to 50 mg/m2 in terms of metal Zr amount, and the peak position of binding energy of Sn3d5/2 according to X-ray photoelectron spectroscopy of the tin oxide in the coating layer is 1.6 eV or higher than the peak position of binding energy of the metal Sn.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: February 9, 2021
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Shintaro Yamanaka, Shigeru Hirano, Morio Yanagihara, Hirokazu Yokoya
  • Publication number: 20200399765
    Abstract: This Sn-plated steel sheet includes: a base plated steel sheet having a steel sheet, and a Sn-plated layer on at least one surface of the steel sheet; and a film layer which contains a zirconium oxide and a tin oxide and is positioned on the base plated steel sheet. An adhesion amount of Sn per surface of the Sn-plated steel sheet is 0.1 g/m2 or more and 15 g/m2 or less, an amount of the zirconium oxide in the film layer is in a range of 1 mg/m2 or more and 30 mg/m2 or less in terms of an amount of metal Zr, a peak position of a binding energy of Sn3d5/2 of the tin oxide by X-ray photoelectron spectroscopy in the film layer is within a range of 1.4 eV or more and less than 1.6 eV from a peak position of a binding energy of metal Sn, and a quantity of electricity required for reduction of the tin oxide is in a range of more than 5.0 mC/cm2 and 20 mC/cm2 or less.
    Type: Application
    Filed: March 1, 2019
    Publication date: December 24, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Shintaro YAMANAKA, Masakazu NODA, Yasuhiko SATO, Nobuo NAKASONE
  • Patent number: 10865491
    Abstract: The Sn-based alloy plated steel sheet of this disclosure includes: a steel sheet; a composite plating layer formed on at least one side of the steel sheet and including an Fe—Ni—Sn alloy layer and an island-shaped Sn layer located on the Fe—Ni—Sn alloy layer; and a coating layer formed on the surface of the composite plating layer and containing zirconium oxide and tin oxide, and the composite plating layer contains a predetermined amount of Ni and a predetermined amount of Sn, a content of the zirconium oxide in the coating layer is from 0.2 mg/m2 to 50 mg/m2 in terms of metal Zr amount, and a peak position of binding energy of Sn3d5/2 according to X-ray photoelectron spectroscopy of the tin oxide in the coating layer is 1.6 eV or higher than a peak position of binding energy of the metal Sn.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: December 15, 2020
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Shintaro Yamanaka, Shigeru Hirano, Morio Yanagihara, Hirokazu Yokoya
  • Patent number: 10800933
    Abstract: A surface treatment solution for a plated steel sheet to be hot-pressed comprising a ZnO aqueous dispersion (A) and a water dispersible organic resin (B), wherein the ZnO aqueous dispersion (A) comprises water and ZnO particle size having 50 to 300 nm particles, the water dispersible organic resin (B) has a 5 to 45 mgKOH/g acid value and 5 to 300 nm emulsion particle size, and a mass ratio (WA/WB) of a mass of ZnO particles in the ZnO aqueous dispersion (WA) to a mass of solid content of the water dispersible organic resin (WB) is 30/70 to 95/5.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: October 13, 2020
    Assignee: NIHON PARKERIZING CO., LTD.
    Inventors: Soshi Fujita, Jun Maki, Shintaro Yamanaka, Masao Kurosaki, Tatsuya Suzuki, Kensuke Mizuno, Takumi Kozaki, Takahiro Kodama
  • Publication number: 20200307159
    Abstract: A steel sheet for a container includes: a steel sheet; an Ni plated layer, which is arranged on at least one side of the steel sheet and is adhered in an amount of from 0.3 to 3 g/m2 per side in terms of metal Ni amount; and a chromate coated film or a Zr coated film which is arranged on the Ni plated layer, in which the Ni plated layer contains from 0.1 to 20% by mass of ZnO particles per side in terms of metal Zn amount.
    Type: Application
    Filed: May 24, 2017
    Publication date: October 1, 2020
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Shigeru HIRANO, Yoshiaki TANI, Shintaro YAMANAKA, Hirokazu YOKOYA
  • Publication number: 20200232077
    Abstract: A sheet includes: a base; an Al-plating layer on at least one of opposite surfaces of the base; an intermediate coating layer on a surface of the Al-plating layer; and a surface coating layer formed on a surface of the intermediate coating layer and containing ZnO particles with a mean particle size of 0.10 ?m or more and 5.00 ?m or less and an organic resin such that an amount of coating of the ZnO particles is 0.5 g/m2 or more and 10.0 g/m2 or less in terms of metallic zinc.
    Type: Application
    Filed: March 23, 2018
    Publication date: July 23, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Shinichi YAMAGUCHI, Jun MAKI, Soshi FUJITA, Shintaro YAMANAKA, Michiko KONNO, Tetsuya TOBA
  • Patent number: 10711336
    Abstract: Provided is an alloyed hot-dip galvanized steel sheet including a base steel sheet, the base steel sheet containing a given amount of C, Si, Mn, and other elements. The alloyed hot-dip galvanized steel sheet is provided with an alloyed hot-dip galvanized layer on a surface of the base steel sheet, the alloyed hot-dip galvanized layer containing, in mass %, Fe: more than or equal to 5% and less than or equal to 15%, and having a thickness of more than or equal to 3 ?m and less than or equal to 30 ?m.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: July 14, 2020
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Soshi Fujita, Shintaro Yamanaka
  • Publication number: 20200040479
    Abstract: A Sn-plated steel sheet according to the present invention includes a steel sheet, a Sn-plated layer that is provided on at least one surface of the steel sheet, and a film that is provided on a surface of the Sn-plated layer and includes zirconium oxide and tin oxide, in which an amount of the zirconium oxide in the film is 0.2 mg/m2 to 50 mg/m2 in terms of metal Zr amount, in a depth direction analysis by X-ray photoelectron spectroscopy, a depth position A at which an element concentration of Zr present as the zirconium oxide is maximum is positioned closer to a surface of the film than a depth position B at which an element concentration of Sn present as the tin oxide is maximum, and a distance between the depth position A and the depth position B in a depth direction is 0.5 nm or more.
    Type: Application
    Filed: April 13, 2018
    Publication date: February 6, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Shintaro YAMANAKA, Shigeru HIRANO, Masakazu NODA, Yasuhiko SATO
  • Patent number: 10526690
    Abstract: A high-strength hot-dip galvanized steel sheet that is a steel sheet that includes major components and that contains at least 40 vol. % the sum of bainite and martensite, 8-60 vol. % retained austenite, and less than 40 vol. % ferrite, with the remainder comprising an incidental structure. The hot-dip galvanized steel sheet has, at the interface between the deposit layer formed by hot-dip galvanization and the base steel sheet, an intermetallic compound constituted of Fe, Al, Zn, and incidental impurities and having an average thickness of 0.1-2 ?m, the intermetallic compound having a crystal grain diameter of 0.01-1 ?m. After the deposit layer formed by hot-dip galvanization was removed, the surface of the base steel sheet has an arithmetic average roughness Ra of 0.1-2.0 ?m and gives a roughness curve in which the contour elements have an average length RSm of 5-300 ?m.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: January 7, 2020
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Shintaro Yamanaka, Soshi Fujita, Koichi Sato
  • Publication number: 20200002818
    Abstract: An Al-plated steel sheet includes: a base; an Al-plating layer formed on at least one of opposite surfaces of the base; and a surface layer formed on the Al-plating layer, the surface layer containing: ZnO particles; an organic resin; and acetylacetonato in an amount in a range from 10 mass % to 30 mass %, both inclusive, with respect to a total mass of the surface layer. A mean particle size of the ZnO particles is in a range from 0.10 ?m to 5.00 ?m, both inclusive, and an amount of coating of the ZnO particles is in a range from 0.5 g/m2 to 10.0 g/m2, both inclusive, in terms of metal Zn.
    Type: Application
    Filed: March 23, 2018
    Publication date: January 2, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Shinichi YAMAGUCHI, Shintaro YAMANAKA
  • Publication number: 20190301043
    Abstract: The Sn-plated steel sheet of the disclosure is an Sn-plated steel sheet including: a steel sheet; an Sn plating layer formed on at least one side of the steel sheet and containing, based on % by mass, from 0.1 g/m2 to 15 g/m2 of metal Sn; and a coating layer formed on the surface of the Sn plating layer and containing zirconium oxide and tin oxide; in which the content of the zirconium oxide in the coating layer is from 0.2 mg/m2 to 50 mg/m2 in terms of metal Zr amount, and the peak position of binding energy of Sn3d5/2 according to X-ray photoelectron spectroscopy of the tin oxide in the coating layer is 1.6 eV or higher than the peak position of binding energy of the metal Sn.
    Type: Application
    Filed: May 24, 2017
    Publication date: October 3, 2019
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Shintaro YAMANAKA, Shigeru HIRANO, Morio YANAGIHARA, Hirokazu YOKOYA
  • Publication number: 20190292673
    Abstract: The Sn-based alloy plated steel sheet of this disclosure includes: a steel sheet; a composite plating layer formed on at least one side of the steel sheet and including an Fe—Ni—Sn alloy layer and an island-shaped Sn layer located on the Fe—Ni—Sn alloy layer; and a coating layer formed on the surface of the composite plating layer and containing zirconium oxide and tin oxide, and the composite plating layer contains a predetermined amount of Ni and a predetermined amount of Sn, a content of the zirconium oxide in the coating layer is from 0.2 mg/m2 to 50 mg/m2 in terms of metal Zr amount, and a peak position of binding energy of Sn3d5/2 according to X-ray photoelectron spectroscopy of the tin oxide in the coating layer is 1.6 eV or higher than a peak position of binding energy of the metal Sn.
    Type: Application
    Filed: May 24, 2017
    Publication date: September 26, 2019
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Shintaro YAMANAKA, Shigeru HIRANO, Morio YANAGIHARA, Hirokazu YOKOYA
  • Patent number: 10406627
    Abstract: By superposing a plurality of steel sheets including a high tensile steel sheet and performing pulsation conduction by an inverter DC type spot welding power supply and controlling the conduction time of the current pulses, intervals of the current pulses, that is, conduction idle time, and weld current applied at the current pulses in a variable manner, the optimum weld conditions are obtained. For resistance spot welding of the hot stamped steel sheet, resistance spot welding with a minimum weld current of a second pulsation step higher than the maximum weld current at a first pulsation step is used to suppress the occurrence of outer spatter and inner spatter and secure a broad suitable current range even if using an inverter DC power supply.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: September 10, 2019
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Hiroki Fujimoto, Hatsuhiko Oikawa, Shintaro Yamanaka, Takashi Imamura
  • Patent number: 10351936
    Abstract: A high-strength hot-dip galvanized steel sheet containing a main component, the steel sheet having at least 40 wt. % of ferrite as a main phase in terms of the volumetric ratio, and 8-60% inclusive of residual austenite, the remaining structure comprising one or more of bainite, martensite, or pearlite. Austenite particles within a range where the average residual stress (sigmaR) thereof satisfies the expression ?400 MPa<=sigmaR<=200 MPa (formula (1)) are present in an amount of 50% or more in the hot-dip galvanized steel sheet. The surface of the steel sheet has a hot-dip galvanized layer containing less than 7 wt. % of Fe, the remainder comprising Zn, Al and inevitable impurities.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: July 16, 2019
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Koichi Sato, Shintaro Yamanaka, Soshi Fujita
  • Publication number: 20190160519
    Abstract: [Object] There are provided automobile parts and a method for manufacturing the automobile parts. The automobile parts have an excellent corrosion resistance after coated with a electrodeposition paint with smaller thickness, improve formability and productivity in hot pressing, and also improve chemical conversion treatability after hot press-forming.
    Type: Application
    Filed: February 1, 2019
    Publication date: May 30, 2019
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Jun MAKI, Shintaro YAMANAKA, Hideaki IRIKAWA
  • Patent number: 10265797
    Abstract: A resistance spot welding method including: a pulsation process of clamping a sheet assembly of two or more overlapped steel sheets including at least one high tensile steel sheet using a pair of welding electrodes that are connected to a spot welding power source employing an inverter direct current method, and performing plural repetitions of current passing and current pass stopping, while pressing the steel sheets with the welding electrodes; and a continuous current pass process in which, after the pulsation process, current is passed continuously for a longer period of time than a maximum current pass time of the pulsation process, while pressing the steel sheets with the welding electrodes.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: April 23, 2019
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Hiroki Fujimoto, Hatsuhiko Oikawa, Shintaro Yamanaka
  • Patent number: 10232426
    Abstract: [Object] There are provided automobile parts and a method for manufacturing the automobile parts. The automobile parts have an excellent corrosion resistance after coated with a electrodeposition paint with smaller thickness, improve formability and productivity in hot pressing, and also improve chemical conversion treatability after hot press-forming.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: March 19, 2019
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Jun Maki, Shintaro Yamanaka, Hideaki Irikawa
  • Publication number: 20190078190
    Abstract: Provided is an alloyed hot-dip galvanized steel sheet including a base steel sheet, the base steel sheet containing a given amount of C, Si, Mn, and other elements. The alloyed hot-dip galvanized steel sheet is provided with an alloyed hot-dip galvanized layer on a surface of the base steel sheet, the alloyed hot-dip galvanized layer containing, in mass %, Fe: more than or equal to 5% and less than or equal to 15%, and having a thickness of more than or equal to 3 ?m and less than or equal to 30 ?m.
    Type: Application
    Filed: November 8, 2018
    Publication date: March 14, 2019
    Applicant: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Soshi Fujita, Shintaro Yamanaka