Patents by Inventor Ikuo Kikuchi
Ikuo Kikuchi 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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Patent number: 11078590Abstract: A plated steel includes: a steel; a zinc based electroplated layer formed on a surface of the steel; and an organic resin coating layer formed on a surface of the zinc based electroplated layer, in which the surface of the zinc based electroplated layer has hairline extending in a predetermined direction, Ra (ML) measured on the surface of the zinc based electroplated layer is 0.10 to 0.70 ?m, on the surface of the zinc based electroplated layer, a peak number PPI measured in a hairline orthogonal direction with a reference level of 10 ?inch satisfies PPI?350×Ra (MC) with respect to Ra (MC), on a surface of the organic resin coating layer, Ra (CC) satisfies Ra (CC)/Ra (CL)?1.10 with respect to Ra (CL), and Ra (CC) satisfies Ra (CC)<Ra (MC) with respect to Ra (MC).Type: GrantFiled: June 15, 2018Date of Patent: August 3, 2021Assignee: NIPPON STEEL CORPORATIONInventors: Takashi Futaba, Kiyokazu Ishizuka, Fumio Shibao, Ikuo Kikuchi, Hidetoshi Shindo, Hiroaki Uramoto, Keita Katsumaru
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Patent number: 10837118Abstract: Provided is a surface treated steel sheet for a fuel tank, the surface treated steel sheet including: a Zn plated layer or a Zn—Ni alloy plated layer which is formed on at least a surface of the steel sheet to be an inner surface of the fuel tank; and a chromate-free chemical conversion coating layer containing a water-and-oil repellent, the chromate-free chemical conversion coating layer being placed over the Zn plated layer or the Zn—Ni alloy plated layer on the surface to be the inner surface of the fuel tank. A water contact angle on a surface of the chromate-free chemical conversion coating layer is more than or equal to 70 degrees and an n-hexadecane contact angle on the surface of the chromate-free chemical conversion coating layer is more than or equal to 30 degrees and less than or equal to 70 degrees.Type: GrantFiled: January 20, 2016Date of Patent: November 17, 2020Assignee: NIPPON STEEL CORPORATIONInventors: Kiyokazu Ishizuka, Noriyuki Maekawa, Hiroaki Uramoto, Hidetoshi Shindo, Ikuo Kikuchi, Kenichiro Matsumura
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Publication number: 20200141019Abstract: A plated steel includes: a steel; a zinc based electroplated layer formed on a surface of the steel; and an organic resin coating layer formed on a surface of the zinc based electroplated layer, in which the surface of the zinc based electroplated layer has hairline extending in a predetermined direction, Ra (ML) measured on the surface of the zinc based electroplated layer is 0.10 to 0.70 ?m, on the surface of the zinc based electroplated layer, a peak number PPI measured in a hairline orthogonal direction with a reference level of 10 ?inch satisfies PPI?350×Ra (MC) with respect to Ra (MC), on a surface of the organic resin coating layer, Ra (CC) satisfies Ra (CC)/Ra (CL)?1.10 with respect to Ra (CL), and Ra (CC) satisfies Ra (CC)<Ra (MC) with respect to Ra (MC).Type: ApplicationFiled: June 15, 2018Publication date: May 7, 2020Applicant: NIPPON STEEL CORPORATIONInventors: Takashi FUTABA, Kiyokazu ISHIZUKA, Fumio SHIBAO, Ikuo KIKUCHI, Hidetoshi SHINDO, Hiroaki URAMOTO, Keita KATSUMARU
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Publication number: 20170362732Abstract: Provided is a surface treated steel sheet for a fuel tank, the surface treated steel sheet including: a Zn plated layer or a Zn—Ni alloy plated layer which is formed on at least a surface of the steel sheet to be an inner surface of the fuel tank; and a chromate-free chemical conversion coating layer containing a water-and-oil repellent, the chromate-free chemical conversion coating layer being placed over the Zn plated layer or the Zn—Ni alloy plated layer on the surface to be the inner surface of the fuel tank. A water contact angle on a surface of the chromate-free chemical conversion coating layer is more than or equal to 70 degrees and an n-hexadecane contact angle on the surface of the chromate-free chemical conversion coating layer is more than or equal to 30 degrees and less than or equal to 70 degrees.Type: ApplicationFiled: January 20, 2016Publication date: December 21, 2017Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kiyokazu ISHIZUKA, Noriyuki MAEKAWA, Hiroaki URAMOTO, Hidetoshi SHINDO, Ikuo KIKUCHI, Kenichiro MATSUMURA
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Patent number: 9512511Abstract: Exemplary embodiments of the present invention can provide a galvanization method for hot-rolled steel sheet, cold-rolled steel sheet, or plating sheet of various compositions, which can avoid nonplating defects by using an Ni preplating procedure. For example, an exemplary galvanization method can be provided for pickled hot-rolled steel sheet or annealed cold-rolled steel sheet which is free from non-plating defects which includes cleaning the surface of the plating sheet, preplating it with Ni, rapidly heating the sheet in a nonoxidizing or reducing atmosphere to a sheet temperature of about 430 to 500° C. at a heating a rate of about 20° C./sec or more, and then hot dip plating the sheet in a galvanization bath. The exemplary amount of Ni preplating can be determined based on the plate type and amount of Si in the sheet steel to produce a hot dip galvanization that is free from non-plating defects.Type: GrantFiled: April 14, 2006Date of Patent: December 6, 2016Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kiyokazu Ishizuka, Kazumi Nishimura, Ikuo Kikuchi
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Patent number: 9499894Abstract: Exemplary embodiments of the present invention can provide a method for producing hot dip galvannealed steel sheet which exhibits high strength, high ductility, and a significant degree of alloying. Such exemplary method can be applied to, e.g., a pickled hot rolled steel sheet or an annealed and pickled cold rolled steel sheet containing between about 0.02% and about 0.2% C and between about 0.15% and about 2.5% Mn, and may include one or more procedures for rinsing the sheet, preplating the sheet with Ni, rapidly heating the sheet in a nonoxidizing atmosphere to a sheet temperature of about 430° C. to 500° C., then hot dip plating the sheet in a galvanizing bath containing between about 0.05% and about 0.2% Al, and then immediately heating the sheet rapidly for an alloying treatment. Such exemplary method can provide an improved alloying speed, improved plating appearance and better plating adhesion.Type: GrantFiled: December 26, 2013Date of Patent: November 22, 2016Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kiyokazu Ishizuka, Kazumi Nishimura, Ikuo Kikuchi, Kaoru Kawasaki, Junji Haji
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Patent number: 9334555Abstract: Exemplary embodiments of the present invention can provide a hot dip galvannealed steel sheet which has excellent corrosion resistance, workability, coatability and appearance. The exemplary galvannealed sheet can include an ultra-low carbon steel sheet having a plating layer which includes about 8 to 13% Fe, about 0.05 to 1.0% Ni, about 0.15 to 1.5% Al, and a balance of Zn and unavoidable impurities. An exemplary method for producing a hot dip galvannealed steel sheet is also provided which can include cleaning an annealed ultra-low carbon steel sheet, preplating it with Ni, rapidly heating the sheet in a nonoxidizing or reducing atmosphere, plating the sheet in a galvanization bath containing Al, wiping it, then rapidly reheating it and either cooling the sheet without any soaking time or soaking and holding it for less than 15 seconds and then cooling it.Type: GrantFiled: January 17, 2013Date of Patent: May 10, 2016Assignee: NIPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kiyokazu Ishizuka, Kazumi Nishimura, Ikuo Kikuchi, Akihiro Miyasaka
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Patent number: 9132610Abstract: A Ni-containing-surface-treated steel sheet for a can, which is formed by stamping, includes a steel sheet having a first surface which becomes an outer surface of the can after the stamping; a Ni containing layer arranged on the first surface of the steel sheet; and a Ni—W alloy plating layer arranged on the Ni containing layer. The Ni containing layer includes a Fe—Ni diffusion alloy layer; a Ni content included in the Ni containing layer is from 5 g/m2 to 89 g/m2; a thickness of the Ni—W alloy plating layer is from 0.02 ?m to 2 ?m; and a W concentration in the Ni—W alloy plating layer is from 10% to 65% by mass %.Type: GrantFiled: April 4, 2012Date of Patent: September 15, 2015Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Takehiro Takahashi, Ikuo Kikuchi, Kenichiroh Matsumura
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Publication number: 20140199487Abstract: Exemplary embodiments of the present invention can provide a method for producing hot dip galvannealed steel sheet which exhibits high strength, high ductility, and a significant degree of alloying. Such exemplary method can be applied to, e.g., a pickled hot rolled steel sheet or an annealed and pickled cold rolled steel sheet containing between about 0.02% and about 0.2% C and between about 0.15% and about 2.5% Mn, and may include one or more procedures for rinsing the sheet, preplating the sheet with Ni, rapidly heating the sheet in a nonoxidizing atmosphere to a sheet temperature of about 430° C. to 500° C., then hot dip plating the sheet in a galvanizing bath containing between about 0.05% and about 0.2% Al, and then immediately heating the sheet rapidly for an alloying treatment. Such exemplary method can provide an improved alloying speed, improved plating appearance and better plating adhesion.Type: ApplicationFiled: December 26, 2013Publication date: July 17, 2014Applicant: NIPPON STEEL CORPORATIONInventors: KIYOKAZU ISHIZUKA, KAZUMI NISHIMURA, IKUO KIKUCHI, KAORU KAWASAKI, JUNJI HAJI
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Publication number: 20140050939Abstract: A surface-treated metal material of the present invention has a composite film on the surface of a metal material. The composite film includes an organic silicon compound (W) having cyclic siloxane bonds, at least one metal compound (X) selected from a group consisting of a titanium compound and a zirconium compound, a phosphate compound (Y) and a fluorine compound (Z). In each of the components of the composite film, the ratio of XS/WS is from 0.06 to 0.16, where WS is a solid mass of Si derived from the organic silicon compound (W) and XS is a solid mass of at least one metal component selected from a group consisting of Ti and Zr included in the metal compound (X); the ratio of YS/WS is from 0.15 to 0.31, where WS is the solid mass of Si and YS is a solid mass of P derived from the phosphate compound (Y); and the ratio of ZS/WS is from 0.08 to 0.50, where WS is the solid mass of Si and ZS is a solid mass of F derived from the fluorine compound (Z).Type: ApplicationFiled: April 26, 2012Publication date: February 20, 2014Applicants: NIHON PARKERIZING CO., LTD., NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Atsushi Morishita, Taihei Kaneto, Yoshio Kimata, Akira Takahashi, Ikuo Kikuchi, Hidehiro Yamaguchi, Shinji Nomura
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Publication number: 20140017515Abstract: A Ni-containing-surface-treated steel sheet for a can, which is formed by stamping, includes a steel sheet having a first surface which becomes an outer surface of the can after the stamping; a Ni containing layer arranged on the first surface of the steel sheet; and a Ni—W alloy plating layer arranged on the Ni containing layer. The Ni containing layer includes a Fe—Ni diffusion alloy layer; a Ni content included in the Ni containing layer is from 5 g/m2 to 89 g/m2; a thickness of the Ni—W alloy plating layer is from 0.02 ?m to 2 ?m; and a W concentration in the Ni—W alloy plating layer is from 10% to 65% by mass %.Type: ApplicationFiled: April 4, 2012Publication date: January 16, 2014Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Takehiro Takahashi, Ikuo Kikuchi, Kenichiroh Matsumura
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Patent number: 8617324Abstract: Exemplary embodiments of the present invention can provide a method for producing hot dip galvannealed steel sheet which exhibits high strength, high ductility, and a significant degree of alloying. Such exemplary method can be applied to, e.g., a pickled hot rolled steel sheet or an annealed and pickled cold rolled steel sheet containing between about 0.02% and about 0.2% C and between about 0.15% and about 2.5% Mn, and may include one or more procedures for rinsing the sheet, preplating the sheet with Ni, rapidly heating the sheet in a nonoxidizing atmosphere to a sheet temperature of about 430° C. to 500° C., then hot dip plating the sheet in a galvanizing bath containing between about 0.05% and about 0.2% Al, and then immediately heating the sheet rapidly for an alloying treatment. Such exemplary method can provide an improved alloying speed, improved plating appearance and better plating adhesion.Type: GrantFiled: September 13, 2012Date of Patent: December 31, 2013Assignee: Nippon Steel & Sumitomo Metal CorporationInventors: Kiyokazu Ishizuka, Kazumi Nishimura, Ikuo Kikuchi, Kaoru Kawasaki, Junji Haji
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Publication number: 20130008569Abstract: Exemplary embodiments of the present invention can provide a method for producing hot dip galvannealed steel sheet which exhibits high strength, high ductility, and a significant degree of alloying. Such exemplary method can be applied to, e.g., a pickled hot rolled steel sheet or an annealed and pickled cold rolled steel sheet containing between about 0.02% and about 0.2% C and between about 0.15% and about 2.5% Mn, and may include one or more procedures for rinsing the sheet, preplating the sheet with Ni, rapidly heating the sheet in a nonoxidizing atmosphere to a sheet temperature of about 430° C. to 500° C., then hot dip plating the sheet in a galvanizing bath containing between about 0.05% and about 0.2% Al, and then immediately heating the sheet rapidly for an alloying treatment. Such exemplary method can provide an improved alloying speed, improved plating appearance and better plating adhesion.Type: ApplicationFiled: September 13, 2012Publication date: January 10, 2013Applicant: Nippon Steel CorporationInventors: KIYOKAZU ISHIZUKA, Kazumi Nishimura, Ikuo Kikuchi, Kaoru Kawasaki, Junji Haji
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Patent number: 8303739Abstract: Exemplary embodiments of the present invention can provide a method for producing hot dip galvannealed steel sheet which exhibits high strength, high ductility, and a significant degree of alloying. Such exemplary method can be applied to, e.g., a pickled hot rolled steel sheet or an annealed and pickled cold rolled steel sheet containing between about 0.02% and about 0.2% C and between about 0.15% and about 2.5% Mn, and may include one or more procedures for rinsing the sheet, preplating the sheet with Ni, rapidly heating the sheet in a nonoxidizing atmosphere to a sheet temperature of about 430° C. to 500° C., then hot dip plating the sheet in a galvanizing bath containing between about 0.05% and about 0.2% Al, and then immediately heating the sheet rapidly for an alloying treatment. Such exemplary method can provide an improved alloying speed, improved plating appearance and better plating adhesion.Type: GrantFiled: April 14, 2006Date of Patent: November 6, 2012Assignee: Nippon Steel CorporationInventors: Kiyokazu Ishizuka, Kazumi Nishimura, Ikuo Kikuchi, Kaoru Kawasaki, Junji Haji
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Patent number: 8263232Abstract: The present invention provides a composite coated zinc-containing plated steel material different from the plated steel materials treated by conventional chromate replacement technologies and superior in all of corrosion resistance, blackening resistance, coating adhesion, and alkali resistance. The composite coated zinc-containing plated steel material of the present invention is characterized by having a composite coating formed by coating and drying on the surface of a plated steel material a treatment solution containing a basic zirconium compound, vanadyl (VO2+)-containing compound, phosphoric acid compound, cobalt compound, organic acid, and water and having a pH 7 to 14, the composite coating containing, with respect to the Zr element as 100 parts by mass, V in an amount of 10 to 45 parts by mass, P in 5 to 100 parts by mass, Co in 0.1 to 20 parts by mass, and an organic acid in 10 to 90 parts by mass.Type: GrantFiled: April 20, 2007Date of Patent: September 11, 2012Assignee: Nippon Steel CorporationInventors: Yoshio Kimata, Atsushi Morishita, Akira Takahashi, Toshikazu Amemiya, Takayuki Kuwagaki, Hidetoshi Shindo, Ikuo Kikuchi
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Patent number: 8241744Abstract: This surface-treated metal material includes a composite film obtained by applying a metal surface treatment agent on a surface of a metal material and drying the metal surface treatment agent, the metal surface treatment agent containing: an organic silicon compound (W) obtained by combining a silane coupling agent (A) containing one amino group in a molecule and one glycidyl group in a molecule, at a solid content mass ratio [(A)/(B)] of 0.7 to 1.7; at least one kind of fluorine compound (X) selected from titanium hydrofluoric acid and zirconium hydrofluoric acid; a phosphoric acid (Y); a vanadium compound (Z); and at least one kind of lubricant (J).Type: GrantFiled: November 14, 2007Date of Patent: August 14, 2012Assignee: Nippon Steel CorporationInventors: Ikuo Kikuchi, Kimitaka Hayashi, Yoshio Kimata, Atsushi Morishita, Taihei Kaneto, Shinji Nomura, Hidehiro Yamaguchi
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Patent number: 8163391Abstract: A surface treated steel sheet has a surface treatment film including a metallic compound containing titanium, a metallic compound containing magnesium, a cationic urethane resin having at least one cationic functional group selected from primary to tertiary amino groups and quaternary ammonium bases, and a cationic phenol polycondensate which is a polycondensate of a phenol compound with an aldehyde and has a cationic functional group, wherein the titanium content in the surface treatment film is in the range of 1 mass % to 4 mass % based on a total solid content; the magnesium content in the surface treatment film is in the range of 0.Type: GrantFiled: December 3, 2007Date of Patent: April 24, 2012Assignee: Nippon Steel CorporationInventors: Ikuo Kikuchi, Toshiyuki Katsumi, Kimitaka Hayashi
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Publication number: 20100068513Abstract: A surface treated steel sheet has a surface treatment film including a metallic compound containing titanium, a metallic compound containing magnesium, a cationic urethane resin having at least one cationic functional group selected from primary to tertiary amino groups and quaternary ammonium bases, and a cationic phenol polycondensate which is a polycondensate of a phenol compound with an aldehyde and has a cationic functional group, wherein the titanium content in the surface treatment film is in the range of 1 mass % to 4 mass % based on a total solid content; the magnesium content in the surface treatment film is in the range of 0.Type: ApplicationFiled: December 3, 2007Publication date: March 18, 2010Inventors: Ikuo Kikuchi, Toshiyuki Katsumi, Kimitaka Hayashi
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Publication number: 20100003529Abstract: This surface-treated metal material includes a composite film obtained by applying a metal surface treatment agent on a surface of a metal material and drying the metal surface treatment agent, the metal surface treatment agent containing: an organic silicon compound (W) obtained by combining a silane coupling agent (A) containing one amino group in a molecule and one glycidyl group in a molecule, at a solid content mass ratio [(A)/(B)] of 0.7 to 1.7; at least one kind of fluorine compound (X) selected from titanium hydrofluoric acid and zirconium hydrofluoric acid; a phosphoric acid (Y); a vanadium compound (Z); and at least one kind of lubricant (J).Type: ApplicationFiled: November 14, 2007Publication date: January 7, 2010Inventors: Ikuo Kikuchi, Kimitaka Hayashi, Yoshio Kimata, Atsushi Morishita, Taihei Kanetou, Shinji Nomura, Hidehiro Yamaguchi
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Publication number: 20090211668Abstract: Exemplary embodiments of the present invention can provide a method for producing hot dip galvannealed steel sheet which exhibits high strength, high ductility, and a significant degree of alloying. Such exemplary method can be applied to, e.g., a pickled hot rolled steel sheet or an annealed and pickled cold rolled steel sheet containing between about 0.02% and about 0.2% C and between about 0.15% and about 2.5% Mn, and may include one or more procedures for rinsing the sheet, preplating the sheet with Ni, rapidly heating the sheet in a nonoxidizing atmosphere to a sheet temperature of about 430° C. to 500° C., then hot dip plating the sheet in a galvanizing bath containing between about 0.05% and about 0.2% Al, and then immediately heating the sheet rapidly for an alloying treatment. Such exemplary method can provide an improved alloying speed, improved plating appearance and better plating adhesion.Type: ApplicationFiled: April 14, 2006Publication date: August 27, 2009Applicant: Nippon Steel CorporationInventors: Kiyokazu Ishizuka, Kazumi Nishimura, Ikuo Kikuchi, Kaoru Kawasaki, Junji Haji