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).

  • Patent number: 9181598
    Abstract: A high-strength alloyed hot-dip galvanized steel sheet obtained by subjecting the surface of a high-strength steel sheet to alloyed hot-dip galvanization, and formed from a steel sheet containing, in mass %, main components, and containing at least 40 vol % bainite and/or martensite, 8-60 vol % retained austenite, and less than 40 vol % ferrite, with the remainder comprising unavoidable structures. In the alloyed hot-dip galvanized steel sheet, the total thickness of the Gamma1 layer and the Gamma layer (Tgamma1+Tgamma) is 2 ?m or less in the alloy layers formed by hot-dip galvanization, and the Gamma1 phase/Gamma phase thickness ratio (Tgamma1/Tgamma) is 1 or less. A tensile strength of 980 MPa or above can be easily imparted to the alloyed hot-dip galvanized steel sheet. The alloyed hot-dip galvanized steel sheet has excellent coating adherence, and coating separation during machining can be suppressed.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: November 10, 2015
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Shintaro Yamanaka, Soshi Fujita, Koichi Sato
  • Patent number: 9150940
    Abstract: A high-strength alloyed hot-dip galvanized steel sheet obtained by subjecting the surface of a high-strength steel sheet to alloyed hot-dip galvanization, and formed from a steel sheet containing, in mass %, main components, and containing at least 40 vol % bainite and/or martensite, 8-60 vol % retained austenite, and less than 40 vol % ferrite, with the remainder comprising unavoidable structures. In the alloyed hot-dip galvanized steel sheet, the total thickness of the Gamma1 layer and the Gamma layer (Tgamma1+Tgamma) is 2 ?m or less in the alloy layers formed by hot-dip galvanization, and the Gamma1 phase/Gamma phase thickness ratio (Tgamma1/Tgamma) is 1 or less. A tensile strength of 980 MPa or above can be easily imparted to the alloyed hot-dip galvanized steel sheet. The alloyed hot-dip galvanized steel sheet has excellent coating adherence, and coating separation during machining can be suppressed.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: October 6, 2015
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Shintaro Yamanaka, Soshi Fujita, Koichi Sato
  • Publication number: 20150275345
    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 5, 2013
    Publication date: October 1, 2015
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Soshi Fujita, Shintaro Yamanaka
  • Publication number: 20150225829
    Abstract: The present invention provides a hot-dip galvanized steel sheet that is excellent in plating wettability and plating adhesiveness even when a base steel sheet contains Si and Mn, and a manufacturing method of the same. The hot-dip galvanized steel sheet according to the present invention includes a base steel sheet containing Si, Mn, and other predetermined components, and a hot-dip galvanizing layer formed on at least one surface of the base steel sheet. In the base steel sheet, a value of HA representing average hardness in a surface layer ranging from an interface between the base steel sheet and the hot-dip galvanizing layer to 50 ?m in depth and a value of HB representing average hardness in a deep portion ranging from the interface to greater than 50 ?m in depth satisfy all the following three relational expressions. 50?HA?500??(1) 50?HB?500??(2) 0.5?HA/HB?0.
    Type: Application
    Filed: August 2, 2013
    Publication date: August 13, 2015
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Soshi Fujita, Shintaro Yamanaka
  • Publication number: 20150044499
    Abstract: An Al-plated steel sheet includes: a steel sheet; an Al plating layer which is formed on one surface or both surfaces of the steel sheet and contains at least 85% or more of Al by mass %; and a surface coating layer which is laminated on the surface of the Al plating layer and contains ZnO and one or more lubricity improving compounds.
    Type: Application
    Filed: April 15, 2013
    Publication date: February 12, 2015
    Inventors: Jun Maki, Masao Kurosaki, Kazuhisa Kusumi, Shintaro Yamanaka
  • Publication number: 20150020562
    Abstract: The present invention provides plated steel sheet for hot press use which is excellent in hot lubricity, coating adhesion, spot weldability, and coated corrosion resistance and a method of hot pressing plated steel sheet. The present invention is Plated steel sheet for hot press use and a method of hot pressing plated steel sheet characterized by being plated steel sheet for hot press use which contains an Al plating layer which is formed on one surface or both surfaces of said steel sheet, and a surface coating layer which is formed on said Al plating layer, said surface coating layer containing at least one Zn compound which is selected from a group comprised of Zn hydroxide, Zn phosphate, and a Zn organic acid.
    Type: Application
    Filed: February 8, 2013
    Publication date: January 22, 2015
    Inventors: Shintaro Yamanaka, Jun Maki, Masao Kurosaki, Kazuhisa Kusumi
  • Publication number: 20140255724
    Abstract: A high-strength hot-dip galvanized steel sheet which includes a steel sheet that comprises 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: Application
    Filed: September 28, 2012
    Publication date: September 11, 2014
    Inventors: Shintaro Yamanaka, Soshi Fujita, Koichi Sato
  • Publication number: 20140255725
    Abstract: A high-strength alloyed hot-dip galvanized steel sheet obtained by subjecting the surface of a high-strength steel sheet to alloyed hot-dip galvanization, and formed from a steel sheet containing, in mass %, main components, and containing at least 40 vol % bainite and/or martensite, 8-60 vol % retained austenite, and less than 40 vol % ferrite, with the remainder comprising unavoidable structures. In the alloyed hot-dip galvanized steel sheet, the total thickness of the Gamma1 layer and the Gamma layer (Tgamma1+Tgamma) is 2 ?m or less in the alloy layers formed by hot-dip galvanization, and the Gamma1 phase/Gamma phase thickness ratio (Tgamma1/Tgamma) is 1 or less. A tensile strength of 980 MPa or above can be easily imparted to the alloyed hot-dip galvanized steel sheet. The alloyed hot-dip galvanized steel sheet has excellent coating adherence, and coating separation during machining can be suppressed.
    Type: Application
    Filed: September 28, 2012
    Publication date: September 11, 2014
    Inventors: Shintaro Yamanaka, Soshi Fujita, Koichi Sato
  • Publication number: 20140234656
    Abstract: A steel sheet which uses steel sheet which contains the easily oxidizable elements Si and Mn as a base material and which is provided with a hot dip galvanized layer which is excellent in plating wettability and plating adhesion and a method of production of the same are provided. A hot dip galvanized steel sheet which is comprised of a steel sheet having a hot dip galvanized layer A on the surface of the steel sheet, characterized by having the following B layer right under the steel sheet surface and in the steel sheet: B layer: Layer which has thickness of 0.001 ?m to 0.5 ?m, which contains, based on mass of the B layer, one or more of Fe, Si, Mn, P, S, and Al oxides in a total of less than 50 mass %, which contains C, Si, Mn, P, S, and Al not in oxides in C: less than 0.05 mass %, Si: less than 0.1 mass %, Mn: less than 0.5 mass %, P: less than 0.001 mass %, S: less than 0.001 mass %, and Al: less than 0.005 mass % and which contains Fe not in oxides in 50 mass % or more.
    Type: Application
    Filed: September 28, 2012
    Publication date: August 21, 2014
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Soshi Fujita, Shintaro Yamanaka, Koichi Sato
  • Publication number: 20140227556
    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: Application
    Filed: September 28, 2012
    Publication date: August 14, 2014
    Inventors: Koichi Sato, Shintaro Yamanaka, Soshi Fujita
  • Publication number: 20120135263
    Abstract: On part of a surface of a metal plate that is to be heated by radiant heat transfer with a near-infrared ray, a region where reflectance for a radiant ray is made lower than that of the original surface of the metal plate is formed. As reflectance reducing treatment, painting or thermal spraying in a blackish color, plating in a blackish color, treatment for increasing roughness of the surface of the metal plate, blasting, etching, blackening, surface layer quality changing treatment of the metal plate, or the like can be adopted. The metal plate is turned into a heated metal plate partially having a different temperature by being heated by radiant heat transfer, and thereafter, the heated metal plate is subjected to thermal processing accompanied by cooling, for example, by hot stamping.
    Type: Application
    Filed: August 5, 2010
    Publication date: May 31, 2012
    Inventors: Yoshifumi Kobayashi, Kazuyuki Kawano, Yasunori Itoh, Shinichi Suzuki, Shintaro Yamanaka
  • Publication number: 20110230203
    Abstract: An information processing apparatus includes a first obtaining unit, a setting unit, and a judgment unit. The first obtaining unit is capable of obtaining current position information. The setting unit is configured to set a first judgment condition to judge whether the current position information obtained by the first obtaining unit is transmitted to a site on a network that requests the current position information. The judgment unit is configured to judge whether the current position information is transmitted to the site on the basis of the first judgment condition set by the setting unit.
    Type: Application
    Filed: February 24, 2011
    Publication date: September 22, 2011
    Inventors: Koji IHARA, Yoshiyuki Mineo, Shintaro Yamanaka, Tomohiko Hishinuma
  • Patent number: 7272787
    Abstract: A Web page having display elements such as a headline, a story body, subheads, and links to articles is obtained and rendered internally to obtain a position of each display element based on draw data. Each display element is classified into several clusters according to its position. Next, clusters having the same character attributes are classified as a group. A group having a high average of the number of characters within each of its clusters is determined as the story body and a group having a low average is determined as the headline. Then, individual pages including the story body and a top page including the headline, the subheads, and links to the story body pages are created. Therefore, the Web page is reconstructed as Web pages suitable for browsing in low-resolution display environments.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: September 18, 2007
    Assignee: Sony Corporation
    Inventors: Masayuki Nakamura, Tetsuo Yutani, Kazutoshi Nagatome, Shintaro Yamanaka
  • Publication number: 20060101778
    Abstract: A steel post superior in corrosion controllability of its embedded part even when marked for territory by dogs, that is, a steel post having corrosion controllability of an embedded part comprising a steel post having a corrosion-proofing coating or a zinc-based plating corrosion-proofing material which is provided with a coating layer comprised of a corrosion-proofing material superior in durability against an aqueous solution containing ammonium ions along the outside of the steel post to at least 50 mm up to the atmosphere side and down to the embedded material side at a top end of an interface where the steel post and material embedded in contact each other.
    Type: Application
    Filed: November 2, 2005
    Publication date: May 18, 2006
    Inventors: Masahiro Yamamoto, Shintaro Yamanaka
  • Publication number: 20050289121
    Abstract: A Web page including as its display elements a headline and a body of its story, subheads and links to articles belonging to the subheads is obtained and is rendered internally so as to obtain a position of each display element on the basis of draw data. Each display element is classified into several clusters in accordance with the obtained position of the display element and layout features of the individual clusters are detected so as to discriminate clusters of the headline and the body of story in accordance with a result of the feature detection. Next, clusters having same character attribute are collected to be a group, and a group having a high average of the number of characters within each cluster included in each group is determined as the body of story and a group having a low average as the headline. Then, individual pages of the body-of-story/article are created and a top page including the headline and subheads provided with links to these body-of-story/article pages is created.
    Type: Application
    Filed: May 21, 2004
    Publication date: December 29, 2005
    Inventors: Masayuki Nakamura, Tetsuo Yutani, Kazutoshi Nagatome, Shintaro Yamanaka