Patents by Inventor Hirokazu Yokoya
Hirokazu Yokoya 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).
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Publication number: 20180155845Abstract: This steel sheet for containers includes a steel sheet, a Ni coated layer that is formed on at least one surface of the steel sheet, and a chemical treatment layer that is formed on the Ni coated layer. The Ni coated layer contains 10 mg/m2 to 1,000 mg/m2 of Ni in terms of an amount of metal Ni, and the chemical treatment layer contains 5 mg/m2 to 30 mg/m2 of a Zr compound in terms of an amount of metal Zr. An average roughness Ra of an outermost surface of the chemical treatment layer obtained with a scanning probe microscope is 10 nm to 100 nm, and when a variation amount in a yellowness index measured at one measurement point on the outermost surface of the chemical treatment layer is defined as ?YI represented by Equation (2), an average of absolute values of the ?YI obtained at a plurality of the measurement points included in a unit area of the outermost surface is 5.0 or less.Type: ApplicationFiled: June 23, 2015Publication date: June 7, 2018Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Akira TACHIKI, Shigeru HIRANO, Hirokazu YOKOYA, Morio YANAGIHARA, Yoshiaki TANI
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Publication number: 20180087172Abstract: A steel sheet for a container includes: a steel sheet; a coated layer which contains Ni and is provided as an upper layer of the steel sheet; and a chemical treatment layer which is provided as an upper layer of the coated layer, and contains a Zr compound in an amount of 3.0 to 30.0 mg/m2 in terms of Zr metal, and a Mg compound in an amount of 0.50 to 5.00 mg/m2 in terms of Mg metal, in which the coated layer is one of the group consisting of a Ni coated layer which contains Ni in amount of 10 to 1000 mg/m2 in terms of Ni metal, and a composite coated layer which contains Ni in an amount of 5 to 150 mg/m2 in terms of Ni metal and Sn in an amount of 300 to 3000 mg/m2 in terms of Sn metal, and has an island-shaped Sn coated layer formed on an Fe—Ni—Sn alloy layer.Type: ApplicationFiled: April 15, 2016Publication date: March 29, 2018Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Akira TACHIKI, Shigeru HIRANO, Yoshiaki TANI, Hirokazu YOKOYA, Morio YANAGIHARA, Makoto KAWABATA
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Patent number: 9914584Abstract: A three-piece resealable can for acidic liquid includes, a cylindrical can body member that includes a screw portion at one end; and a can bottom member that contacts the can body member so as to close an opening portion of the other end of the can body member. The can body member includes a cylindrical first steel sheet, Ni plating that is formed on an inner circumferential surface of the first steel sheet, a polyester film that is formed so as to be disposed on the outermost surface of the inner circumference of the can body member, and a Zr-containing film that is formed between the first steel sheet and the polyester film. The can bottom member includes a second steel sheet, and Sn plating that is formed on the can body member side of the can bottom member. The Zr-containing film contains Zr compounds.Type: GrantFiled: May 27, 2013Date of Patent: March 13, 2018Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Shigeru Hirano, Yoshiaki Tani, Hirokazu Yokoya
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Publication number: 20170253984Abstract: Provided is a chemical treatment steel sheet including a steel sheet; a composite coated layer which is formed on at least one surface of the steel sheet, and contains 2 to 200 mg/m2 of Ni in terms of an amount of metal Ni and 0.1 to 10 g/m2 of Sn in terms of an amount of metal Sn, and in which an island-shaped Sn coated layer is formed on an Fe—Ni—Sn alloy layer; and a chemical treatment layer that is formed on the composite coated layer, and contains a 0.01 to 0.1 mg/m2 of Zr compounds in terms of an amount of metal Zr and 0.01 to 5 mg/m2 of phosphate compounds in terms of an amount of P.Type: ApplicationFiled: October 8, 2015Publication date: September 7, 2017Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Yoshiaki TANI, Shigeru HIRANO, Akira TACHIKI, Morio YANAGIHARA, Makoto KAWABATA, Hirokazu YOKOYA
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Patent number: 9752222Abstract: A surface-treated steel sheet for a container, comprising: a steel sheet, and a Zr compound film disposed on the steel sheet, wherein the Zr compound film being formed by a dipping or electrolytic treatment in a solution containing Zr ion, F ion, ammonium ion and nitrate ion; and the coating weight of the Zr compound film is 1 to 100 mg/m2 in terms of the amount of metallic Zr, and 0.1 mg/m2 or less in terms of the F amount. There is provided a steel sheet for container, which has an excellent processability in the can manufacturing, and at the same time, is excellent in drawing and ironing processability, weldability, corrosion resistance, adherence thereof to a coating material and adherence thereof to a film, and a process for producing such a steel sheet for container.Type: GrantFiled: November 20, 2014Date of Patent: September 5, 2017Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Shigeru Hirano, Akira Tachiki, Hirokazu Yokoya
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Publication number: 20170159185Abstract: A chemical treatment steel sheet includes a steel sheet; a Fe—Sn alloy layer which is formed on at least one surface of the steel sheet; an Sn layer which is formed on the Fe—Sn alloy layer; and a chemical treatment layer that is formed on the Sn layer, and contains a 0.01 to 0.1 mg/m2 of Zr compounds in terms of an amount of metal Zr and 0.01 to 5 mg/m2 of phosphate compounds in terms of an amount of P. The total Sn content of the Fe—Sn alloy layer and the Sn layer is 0.1 to 15 g/m2 of Sn in terms of the amount of metal Sn.Type: ApplicationFiled: October 8, 2015Publication date: June 8, 2017Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Yoshiaki TANI, Shigeru HIRANO, Akira TACHIKI, Morio YANAGIHARA, Makoto KAWABATA, Hirokazu YOKOYA
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Publication number: 20160122891Abstract: A steel sheet for containers includes a steel sheet, an underlying Ni layer formed by performing a Ni coating or a Fe—Ni alloy coating containing Ni in an amount of 5 mg/m2 to 150 mg/m2 in terms of an amount of metal Ni on at least one surface of the steel sheet, a Sn coated layer formed by performing a Sn coating containing Sn in an amount of 300 mg/m2 to 3,000 mg/m2 in terms of an amount of metal Sn on the underlying Ni layer and including an island-shaped Sn formed by alloying the Sn coating and at least a part of the underlying Ni layer by a reflow treatment, an oxide layer formed on the Sn coated layer and containing tin oxide, and a chemical treatment layer formed on the oxide layer and at least contains Zr in an amount of 1 mg/m2 to 500 mg/m2 in terms of an amount of metal Zr and phosphate acid in an amount of 0.1 mg/m2 to 100 mg/m2 in terms of an amount of P, in which the oxide layer contains tin oxide in such an amount that an amount of electricity required for reduction of the oxide layer is 0.Type: ApplicationFiled: May 21, 2014Publication date: May 5, 2016Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Yoshiaki TANI, Shigeru HIRANO, Akira TACHIKI, Morio YANAGIHARA, Makoto KAWABATA, Hirokazu YOKOYA
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Patent number: 9315877Abstract: A steel sheet for bottom covers of aerosol cans includes, as chemical composition, C: 0.025 to 0.065 mass %, Mn: 0.10 to 0.28 mass %, P: 0.005 to 0.03 mass %, Al: 0.01 to 0.04 mass %, N: 0.0075 to 0.013 mass %, Si: limited to 0.05 mass % or less, S: limited to 0.009 mass % or less, and balance consisting of Fe and unavoidable impurities, wherein yield point YP in rolling direction after aging treatment is in range of 460 to 540 MPa, total elongation in the rolling direction after the aging treatment is 15% or more, yield point elongation ELYP in the rolling direction after the aging treatment is 6% or less, and sheet thickness t in unit of mm, the yield point YP in unit of MPa in the rolling direction after the aging treatment, and the yield point elongation ELYP in unit of % in the rolling direction after the aging treatment satisfy 130?t×YP×(1?ELYP/100).Type: GrantFiled: December 5, 2011Date of Patent: April 19, 2016Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Keiichiro Torisu, Seiichi Tanaka, Hirokazu Yokoya, Jyunichi Matsunaga
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Publication number: 20160102414Abstract: A Ni-plated steel sheet according to the present invention includes a steel sheet, a first Ni-plated layer which is formed at least on a one-sided surface of the steel sheet and contains Ni, and a second Ni-plated layer which is formed on the first Ni-plated layer and contains Ni. An average central-line roughness Ra at an interface between the first Ni-plated layer and the second Ni-plated layer is less than 0.1 ?m, an average central-line roughness Ra of a surface of the second Ni-plated layer is 0.1 ?m to 100 ?m, and a coating amount of Ni in the entirety of the first Ni-plated layer and the second Ni-plated layer is 20 mg/m2 to 2500 mg/m2 per one-sided surface in terms of metal Ni.Type: ApplicationFiled: April 30, 2014Publication date: April 14, 2016Inventors: Yoshiaki TANI, Shigeru HIRANO, Akira TACHIKI, Morio YANAGIHARA, Makoto KAWABATA, Hirokazu YOKOYA
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Patent number: 9221123Abstract: A laser processing apparatus includes: a reflection mirror (1, 4) reflecting a laser beam (LA, LB) to an inner or outer surface at an upper edge portion (14a) of a cup (14); a reflection mirror (2, 5) reflecting a part that has passed an outer side of the upper edge portion (14a), of the laser beam (LA, LB) reflected by the reflection mirror (1, 4), to an outer or inner surface of the cup (14); and a rotating pedestal (15) rotating the cup (14) around its center relative to the reflection mirror (1, 4) and the reflection mirror (2, 5).Type: GrantFiled: July 27, 2010Date of Patent: December 29, 2015Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Tatsuhiko Sakai, Hirokazu Yokoya
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Patent number: 9212428Abstract: The present invention provides a steel sheet for a container including a cold-rolled steel sheet and a composite film formed on the cold-rolled steel sheet through an electrolysis process in a solution containing: at least one metal ion of an Sn ion, an Fe ion, and an Ni ion; Zr ion; a nitric acid ion: and an ammonium ion, in which the composite film contains at least one element of: Zr of 0.1 to 100 mg/m2 in equivalent units of metal Zr; Sn of 0.3 to 20 g/m2 in equivalent units of metal Sn; Fe of 5 to 2000 mg/m2 in equivalent units of metal Fe; and Ni of 5 to 2000 mg/m2 in equivalent units of metal Ni.Type: GrantFiled: June 28, 2011Date of Patent: December 15, 2015Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Shigeru Hirano, Akira Tachiki, Hirokazu Yokoya, Morio Yanagihara, Makoto Kawabata
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Patent number: 9212423Abstract: Steel sheet for container use with excellent canmaking workability and with excellent drawability and ironability, weldability, corrosion resistance, coating adhesion, film adhesion, and wettability characterized in that a surface of the steel sheet has a Zr film which contains, by amount of metal Zr, 1 to 100 mg/m2 of Zr oxides.Type: GrantFiled: June 4, 2010Date of Patent: December 15, 2015Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Akira Tachiki, Shigeru Hirano, Hirokazu Yokoya
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Patent number: 9127341Abstract: A surface-treated steel sheet for a container, comprising: a steel sheet, and a Zr compound film disposed on the steel sheet, wherein the Zr compound film being formed by a dipping or electrolytic treatment in a solution containing Zr ion, F ion, ammonium ion and nitrate ion; and the coating weight of the Zr compound film is 1 to 100 mg/m2 in terms of the amount of metallic Zr, and 0.1 mg/m2 or less in terms of the F amount. There is provided a steel sheet for container, which has an excellent processability in the can manufacturing, and at the same time, is excellent in drawing and ironing processability, weldability, corrosion resistance, adherence thereof to a coating material and adherence thereof to a film, and a process for producing such a steel sheet for container.Type: GrantFiled: January 18, 2011Date of Patent: September 8, 2015Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Shigeru Hirano, Akira Tachiki, Hirokazu Yokoya
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Patent number: 9061787Abstract: A three-piece resealable can for acidic liquid includes, a cylindrical can body member that includes a screw portion at one end; and a can bottom member that contacts the can body member so as to close an opening portion of the other end of the can body member. The can body member includes a cylindrical first steel sheet, Ni plating that is formed on an inner circumferential surface of the first steel sheet, a polyester film that is formed so as to be disposed on the outermost surface of the inner circumference of the can body member, and a chromate film that is formed between the first steel sheet and the polyester film. The can bottom member includes a second steel sheet, and Sn plating that is formed on the can body member side of the can bottom member.Type: GrantFiled: May 27, 2011Date of Patent: June 23, 2015Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Shigeru Hirano, Hiroshi Nishida, Hirokazu Yokoya
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Publication number: 20150167192Abstract: The present invention provides a method of manufacturing a steel sheet for a container which has a plated layer containing Ni of 300 to 1000 mg/m2 in terms of Ni metal, provided on at least one surface of a steel sheet, which has a chemical conversion treatment film containing Zr of 1.0 to 50 mg/m2 in terms of Zr metal, provided on the steel sheet, which contains a phosphate compound of 0.5 to 25 mg/m2, and of which a F-atom number density measured by XPS analysis of a plane of 2 nm and a plane of 4 nm in a depth direction obtained by a sputtering treatment is equal to or less than 2 at %. The method includes forming the chemical conversion treatment film on the steel sheet by performing an immersion or a cathodic electrolytic treatment with a solution containing Zr ions, F ions, and phosphate ions, and performing a washing treatment with a warm water at 40° C. or higher for 0.5 or more seconds.Type: ApplicationFiled: February 26, 2015Publication date: June 18, 2015Applicant: NIPPON STEEL AND SUMITOMO METAL CORPORATIONInventors: Akira TACHIKI, Shigeru HIRANO, Hirokazu YOKOYA, Masakazu NODA, Hiroshi NISHIDA, Kazushige HASEGAWA
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Publication number: 20150086720Abstract: A surface-treated steel sheet for a container, comprising: a steel sheet, and a Zr compound film disposed on the steel sheet, wherein the Zr compound film being formed by a dipping or electrolytic treatment in a solution containing Zr ion, F ion, ammonium ion and nitrate ion; and the coating weight of the Zr compound film is 1 to 100 mg/m2 in terms of the amount of metallic Zr, and 0.1 mg/m2 or less in terms of the F amount. There is provided a steel sheet for container, which has an excellent processability in the can manufacturing, and at the same time, is excellent in drawing and ironing processability, weldability, corrosion resistance, adherence thereof to a coating material and adherence thereof to a film, and a process for producing such a steel sheet for container.Type: ApplicationFiled: November 20, 2014Publication date: March 26, 2015Inventors: Shigeru HIRANO, Akira TACHIKI, Hirokazu YOKOYA
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Publication number: 20140183086Abstract: A three-piece resealable can for acidic liquid includes, a cylindrical can body member that includes a screw portion at one end; and a can bottom member that contacts the can body member so as to close an opening portion of the other end of the can body member. The can body member includes a cylindrical first steel sheet, Ni plating that is formed on an inner circumferential surface of the first steel sheet, a polyester film that is formed so as to be disposed on the outermost surface of the inner circumference of the can body member, and a Zr-containing film that is formed between the first steel sheet and the polyester film. The can bottom member includes a second steel sheet, and Sn plating that is formed on the can body member side of the can bottom member. The Zr-containing film contains Zr compounds.Type: ApplicationFiled: May 27, 2013Publication date: July 3, 2014Applicant: Nippon Steel & Sumitomo Metal CorporationInventors: Shigeru Hirano, Yoshiaki Tani, Hirokazu Yokoya
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Publication number: 20130248054Abstract: A steel sheet for bottom covers of aerosol cans includes, as chemical composition, C: 0.025 to 0.065mass %, Mn: 0.10 to 0.28mass %, P: 0.005 to 0.03mass %, Al: 0.01 to 0.04mass %, N: 0.0075 to 0.013mass %, Si: limited to 0.05mass % or less, S: limited to 0.009mass % or less, and balance consisting of Fe and unavoidable impurities, wherein yield point YP in rolling direction after aging treatment is in range of 460 to 540 MPa, total elongation in the rolling direction after the aging treatment is 15% or more, yield point elongation ELYP in the rolling direction after the aging treatment is 6% or less, and sheet thickness t in unit of mm, the yield point YP in unit of MPa in the rolling direction after the aging treatment, and the yield point elongation ELYP in unit of % in the rolling direction after the aging treatment satisfy 130?t×YP×(1?ELYP/100).Type: ApplicationFiled: December 5, 2011Publication date: September 26, 2013Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Keiichiro Torisu, Seiichi Tanaka, Hirokazu Yokoya, Jyunichi Matsunaga
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Publication number: 20130089751Abstract: The present invention provides a steel sheet for a container including a cold-rolled steel sheet and a composite film formed on the cold-rolled steel sheet through an electrolysis process in a solution containing: at least one metal ion of an Sn ion, an Fe ion, and an Ni ion; Zr ion; a nitric acid ion: and an ammonium ion, in which the composite film contains at least one element of: Zr of 0.1 to 100 mg/m2 in equivalent units of metal Zr; Sn of 0.3 to 20 g/m2 in equivalent units of metal Sn; Fe of 5 to 2000 mg/m2 in equivalent units of metal Fe; and Ni of 5 to 2000 mg/m2 in equivalent units of metal Ni.Type: ApplicationFiled: June 28, 2011Publication date: April 11, 2013Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Shigeru Hirano, Akira Tachiki, Hirokazu Yokoya, Morio Yanagihara, Makoto Kawabata
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Publication number: 20130034745Abstract: The present invention provides a steel sheet for a container including: a plated layer containing an adhesion amount of 300 to 1000 mg/m2 of nickel, provided on at least one surface of a steel sheet as metal Ni; and a chemical conversion treatment film formed on the steel sheet by performing immersion or a cathodic electrolytic treatment with a solution containing Zr ions, F ions, and phosphate ions, wherein a metal Zr adhesion amount of the chemical conversion treatment film is 1.0 to 50 mg/m2, an amount of 0.5 to 25 mg/m2 of a phosphate compound is contained in terms of P amount, and an F-atom number density measured by XPS analysis of a plane of 2 nm and a plane of 4 nm in a depth direction obtained by a sputtering treatment is equal to or less than 2 at %.Type: ApplicationFiled: March 22, 2011Publication date: February 7, 2013Applicant: NIPPON STEEL CORPORATIONInventors: Akira Tachiki, Shigeru Hirano, Hirokazu Yokoya, Masakazu Noda, Hiroshi Nishida, Kazushige Hasegawa