Patents by Inventor Masaharu Ibaragi

Masaharu Ibaragi 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: 20220315131
    Abstract: In a metal-fiber reinforced plastic (FRP) composite, the FRP and the metal member are bonded together, so internal stress (thermal stress) is generated due to the misfit of coefficients of thermal expansion of the metal member and the FRP. Not only does the binder layer peel off and the mechanical properties of the FRP cannot be obtained, but also defects in appearance (surface strain) occur. Therefore, the technical problem is to secure the mechanical properties as a composite while easing the internal stress and keeping surface strain from being generated. The metal-fiber reinforced plastic (FRP) composite according to the present invention solves the technical problem by sandwiching an FRP between two metal members and not having at least one of the metal members joined (bonded) with the FRP. Further, it is possible to arrange an intermediate member between the other metal member and the FRP and sandwich the FRP between the two metal members through the intermediate member.
    Type: Application
    Filed: October 2, 2020
    Publication date: October 6, 2022
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Masaharu IBARAGI, Noriyuki NEGI
  • Publication number: 20220250355
    Abstract: To provide a metal-fiber reinforced resin material (FRP) composite having a good appearance even when used as an automobile outer panel and not deformed even after a coating and baking process. The metal-FRP composite of the invention has a laminated structure of three or more layers, having at least a metal layer, a fiber-reinforced resin material layer holding a reinforced fiber material in a layer constituted by a matrix resin, and a resin layer located between the metal layer and the fiber-reinforced resin material layer. The resin layer is a layer constituted by a room temperature curing adhesive or by a predetermined resin and the room temperature curing adhesive. An elastic modulus E of the resin layer is more than 0.1 MPa and 1000 MPa or less, and a thickness of the resin layer is 0.005 times or more and less than 7.500 times a thickness of the metal layer.
    Type: Application
    Filed: August 28, 2020
    Publication date: August 11, 2022
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Masako NAKAI, Masaharu IBARAGI, Noriyuki NEGI, Masafumi USUI
  • Publication number: 20220216548
    Abstract: A battery case and method of production of the same realizing smaller size, higher mountability, longer service life, and lower cost than in the past, that is, a battery case comprising a container body and a container cover, in which battery case, one or both of the container body and the container cover are made from a laminated steel sheet comprised of a plated steel sheet on which a film having a polyolefin-based resin as a main constituent is laminated, a joined part of the container body and the container cover has a welded part of the plated steel sheet, a melt bonded part of the film, and a gap part between the welded part and the melt bonded part, where a length of gap part/thickness of plated steel sheet ?10.0 and a length of gap part/length of joined part <0.50, and at least part of the inside surface of the battery case is covered by the film, and a method of production of the same.
    Type: Application
    Filed: June 10, 2020
    Publication date: July 7, 2022
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Akinobu KOBAYASHI, Koichi NOSE, Yasuto GOTO, Takehiro TAKAHASHI, Tatsuo NAGATA, Masaharu IBARAGI
  • Publication number: 20220177657
    Abstract: The invention has as its object the provision of a metal-fiber reinforced plastic composite able to more reliably prevent occurrence of an electrolytic corrosion action when forming a composite of a metal member and a fiber reinforced plastic layer comprising reinforcing fiber (carbon fiber) and a matrix resin. A metal-fiber reinforced plastic composite 1 according to the present invention comprises a metal member 10, an insulating layer 30 arranged on at least part of a surface of the metal member 10 and comprising a first matrix resin 31 containing nonconductive fiber 32, and a CFRP layer 40 arranged on at least part of a surface of the insulating layer 30 and comprising a second matrix resin 41 containing carbon fiber 42, wherein, when viewing the surface of the metal member 10 from vertically above, the CFRP layer 40 is positioned at the inside of a region where the insulating layer 30 is present and an outer edge of the CFRP layer 40 and an outer edge of the insulating layer 30 are 0.2 mm or more apart.
    Type: Application
    Filed: April 16, 2020
    Publication date: June 9, 2022
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Masumi KOORI, Kohei UEDA, Atsuo KOGA, Masaharu IBARAGI, Noriyuki NEGI, Masafumi USUI
  • Publication number: 20220161521
    Abstract: What is provided is a new and improved metal-carbon fiber reinforced resin material composite in which the galvanic corrosion of dissimilar materials of a metal member is suppressed and electrodeposition coatability is excellent and a method for manufacturing the metal-carbon fiber reinforced resin material composite. A metal-carbon fiber reinforced resin material composite according to the present invention has a metal member, a resin coating layer disposed on at least a part of a surface of the metal member, and a carbon fiber reinforced resin material containing a matrix resin and a carbon fiber material present in the matrix resin, the resin coating layer contains any one or more kinds selected from the group consisting of metal particles, intermetallic compound particles, conductive oxide particles, and conductive non-oxide ceramic particles as conductive particles and further contains a binder resin, and the conductive particles have a powder resistivity at 23° C. to 27° C. of 7.
    Type: Application
    Filed: April 2, 2019
    Publication date: May 26, 2022
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Kohei UEDA, Yasuaki KAWAMURA, Masumi KOORI, Masaharu IBARAGI
  • Patent number: 11331882
    Abstract: [Problem] To provide a metal/fiber-reinforced resin material composite in which a metal member and a fiber-reinforced resin material are firmly bonded, a light weight and excellent workability are obtained while the strength is enhanced, and the amount of the fiber-reinforced resin material used can be reduced.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: May 17, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Masaharu Ibaragi, Noriyuki Negi, Masafumi Usui, Masako Nakai
  • Publication number: 20210187908
    Abstract: A metal-fiber reinforced resin material composite is provided which improves the shear strength between a metallic member and a fiber reinforced material by more strongly bonding the metallic member and the fiber reinforced resin member, and which is very light and has excellent workability while increasing strength. [Solution] This metal-fiber reinforced resin material composite is provided with a metallic member and with a fiber reinforced resin material that is stacked on at least one surface of the metallic member and combined with the metallic member, wherein the fiber reinforced resin material comprises a matrix resin containing a thermoplastic resin, a reinforcing fiber material included in the matrix resin, and a resin layer interposed between the reinforcing fiber material and the metallic member and comprising a resin of the same type as the matrix resin. The shear strength of the metallic member and the fiber reinforced resin material is greater than or equal to 0.8 MPa.
    Type: Application
    Filed: December 28, 2018
    Publication date: June 24, 2021
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Masaharu IBARAGI, Noriyuki NEGI, Masafumi USUI, Masako NAKAI
  • Publication number: 20210039356
    Abstract: A composite of metal and carbon-fiber-reinforced plastic according to the present invention comprising a predetermined metal member, a resin layer positioned at a surface of at least part of the metal member and containing an inorganic filler having a thermal conductivity of 20 W/(m·K) or more, and carbon fiber reinforced plastic positioned on the resin layer and containing a predetermined matrix resin and carbon reinforcing fiber present in the matrix resin, the carbon reinforcing fiber being at least one of pitch-based carbon reinforcing fiber having a thermal conductivity of 180 to 900 W/(m·K) in range or PAN-based carbon reinforcing fiber having a thermal conductivity of 100 to 200 W/(m·K) in range, a content of the inorganic filler in the resin layer being 10 to 45 vol % in range with respect to a total volume of the resin layer, a number density of the inorganic filler present in a region of a width X ?m from an interface of the resin layer and the carbon fiber reinforced plastic in a direction of the r
    Type: Application
    Filed: April 2, 2019
    Publication date: February 11, 2021
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Masafumi USUI, Masaharu IBARAGI, Noriyuki NEGI
  • Publication number: 20200406585
    Abstract: [Problem] To bond a metal member and a fiber-reinforced resin material, which uses a thermoplastic phenoxy resin as a matrix resin, with each other without decreasing the performance of the fiber-reinforced resin material; and to suppress the occurrence of electrolytic corrosion between the metal member and the fiber-reinforced resin material. [Solution] A metal-fiber reinforced resin material composite body according to the present invention is provided with: a metal member; a fiber-reinforced resin material which is superposed on at least one surface of the metal member so as to be complexed with the metal member; and a bonding resin layer which is interposed between the metal member and the fiber-reinforced resin material.
    Type: Application
    Filed: February 27, 2019
    Publication date: December 31, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Masaharu IBARAGI, Noriyuki NEGI, Masafumi USUI, Masako NAKAI
  • Publication number: 20200316915
    Abstract: [Problem] To provide a metal/fiber-reinforced resin material composite in which a metal member and a fiber-reinforced resin material are firmly bonded, a light weight and excellent workability are obtained while the strength is enhanced, and the amount of the fiber-reinforced resin material used can be reduced.
    Type: Application
    Filed: December 28, 2018
    Publication date: October 8, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Masaharu IBARAGI, Noriyuki NEGI, Masafumi USUI, Masako NAKAI
  • Patent number: 10741802
    Abstract: A steel foil for an electrical storage device container, including a steel foil, a metal chromium layer layered on the steel foil, and a hydrated chromium oxide layer layered on the metal chromium layer, in which the concentration of Fe from a surface of the hydrated chromium oxide layer to a depth of 10 nm is less than 10% by mass, the area ratio of a site having an arithmetic mean roughness Ra of 10 nm or more in a visual field of 1 ?m at the surface of the hydrated chromium oxide layer is less than 20%, and a site having an arithmetic mean roughness Ra of less than 10 nm in a visual field of 1 ?m has an arithmetic mean roughness Ra of 3 nm or less in a visual field of 1 ?m at the surface of the hydrated chromium oxide layer, is adopted.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: August 11, 2020
    Assignees: NIPPON STEEL CORPORATION, NIPPON STEEL CHEMICAL & MATERIAL CO., LTD.
    Inventors: Masaharu Ibaragi, Koichi Nose, Yasuto Goto, Nobuo Kadowaki, Hiroto Unno
  • Patent number: 10418601
    Abstract: A steel foil for a power storage device container includes a rolled steel foil which has a thickness of 200 ?m or less, a diffusion alloy layer which is formed on a surface layer of the rolled steel foil and contains Ni and Fe, and a chromium-based surface treatment layer which is formed on the diffusion alloy layer. The <111> polar density in a reverse pole figure of the diffusion alloy layer in a rolling direction is 2.0 to 6.0, and the aspect ratio of crystal in a surface of the diffusion alloy layer is 1.0 to 5.0.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: September 17, 2019
    Assignees: NIPPON STEEL CORPORATION, NIPPON STEEL CHEMICAL & MATERIAL CO., LTD.
    Inventors: Masaharu Ibaragi, Koichi Nose, Kiyokazu Ishizuka, Yasuto Goto, Shuji Nagasaki, Hiroto Unno
  • Patent number: 10205135
    Abstract: A steel foil for a power storage device container includes a rolled steel foil, a nickel layer formed on a surface of the rolled steel foil, and a chromium-based surface treatment layer formed on a surface of the nickel layer. The nickel layer includes an upper layer portion which is in contact with the chromium-based surface treatment layer and contains Ni of 90 mass % or more among metal elements, and a lower layer portion which is in contact with the rolled steel foil and contains Ni of less than 90 mass % among the metal elements and Fe. <111> polar density in a reverse pole figure of the nickel layer in a rolling direction is 3.0 to 6.0. The nickel layer has a sub-boundary which is a boundary between two crystals having a relative orientation difference of 2° to 5°, and a large angle boundary which is a boundary between two crystals having the relative orientation difference of equal to or more than 15°.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: February 12, 2019
    Assignees: NIPPON STEEL & SUMITOMO METAL CORPORATION, NIPPON STEEL & SUMIKIN MATERIALS CO., LTD.
    Inventors: Masaharu Ibaragi, Koichi Nose, Kiyokazu Ishizuka, Yasuto Goto, Shuji Nagasaki, Hiroto Unno
  • Publication number: 20180138468
    Abstract: A steel foil for an electrical storage device container, including a steel foil, a metal chromium layer layered on the steel foil, and a hydrated chromium oxide layer layered on the metal chromium layer, in which the concentration of Fe from a surface of the hydrated chromium oxide layer to a depth of 10 nm is less than 10% by mass, the area ratio of a site having an arithmetic mean roughness Ra of 10 nm or more in a visual field of 1 ?m at the surface of the hydrated chromium oxide layer is less than 20%, and a site having an arithmetic mean roughness Ra of less than 10 nm in a visual field of 1 ?m has an arithmetic mean roughness Ra of 3 nm or less in a visual field of 1 ?m at the surface of the hydrated chromium oxide layer, is adopted.
    Type: Application
    Filed: April 7, 2016
    Publication date: May 17, 2018
    Applicants: Nippon Steel & Sumitomo Metal Corporation, Nippon Steel & Sumikin Materials Co., Ltd.
    Inventors: Masaharu IBARAGI, Koichi NOSE, Yasuto GOTO, Nobuo KADOWAKI, Hiroto UNNO
  • Patent number: 9719185
    Abstract: The present invention provides a resin-coated stainless steel foil capable of maintaining a strong adherence force to the film even in an electrolytic solution to exhibit good corrosion resistance and excellent in the workability, design property and piecing resistance, and a container and a secondary battery each using the resin-coated stainless steel foil. A resin-coated stainless steel foil having a chromate treatment layer of 2 to 200 nm in thickness on at least one surface of a stainless steel foil and having at least a polyolefin-based resin (A) layer containing a functional group having polarity on the chromate treatment layer; and a container and a secondary battery each using the resin-coated stainless steel foil are also provided.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: August 1, 2017
    Assignee: NIPPON STEEL & SUMIKIN MATERIALS CO., LTD.
    Inventors: Masaharu Ibaragi, Hiroshi Kajiro, Hiroshi Ohishi
  • Publication number: 20170170436
    Abstract: A steel foil for a power storage device container includes a rolled steel foil, a nickel layer formed on a surface of the rolled steel foil, and a chromium-based surface treatment layer formed on a surface of the nickel layer. The nickel layer includes an upper layer portion which is in contact with the chromium-based surface treatment layer and contains Ni of 90 mass % or more among metal elements, and a lower layer portion which is in contact with the rolled steel foil and contains Ni of less than 90 mass % among the metal elements and Fe. <111> polar density in a reverse pole figure of the nickel layer in a rolling direction is 3.0 to 6.0. The nickel layer has a sub-boundary which is a boundary between two crystals having a relative orientation difference of 2° to 5°, and a large angle boundary which is a boundary between two crystals having the relative orientation difference of equal to or more than 15°.
    Type: Application
    Filed: July 22, 2015
    Publication date: June 15, 2017
    Applicants: NIPPON STEEL & SUMITOMO METAL CORPORATION, NIPPON STEEL & SUMIKIN MATERIALS CO., LTD.
    Inventors: Masaharu IBARAGI, Koichi NOSE, Kiyokazu ISHIZUKA, Yasuto GOTO, Shuji NAGASAKI, Hiroto UNNO
  • Publication number: 20170162836
    Abstract: A steel foil for a power storage device container includes a rolled steel foil which has a thickness of 200 ?m or less, a diffusion alloy layer which is formed on a surface layer of the rolled steel foil and contains Ni and Fe, and a chromium-based surface treatment layer which is formed on the diffusion alloy layer. The <111> polar density in a reverse pole figure of the diffusion alloy layer in a rolling direction is 2.0 to 6.0, and the aspect ratio of crystal in a surface of the diffusion alloy layer is 1.0 to 5.0.
    Type: Application
    Filed: July 22, 2015
    Publication date: June 8, 2017
    Applicants: NIPPON STEEL & SUMITOMO METAL CORPORATION, NIPPON STEEL & SUMIKIN MATERIALS CO., LTD.
    Inventors: Masaharu IBARAGI, Koichi NOSE, Kiyokazu ISHIZUKA, Yasuto GOTO, Shuji NAGASAKI, Hiroto UNNO
  • Patent number: 9074083
    Abstract: The present invention provides a polyolefin resin composition for metal coating, which is excellent in separation resistance, weather resistance and corrosion resistance, can be industrially produced without difficulty even by an existing apparatus, and is assured of excellent scratch resistance without using a surface coating agent; a resin film using the composition; and a resin-coated metal material. The polyolefin resin composition for metal coating comprises at least (A) a polyolefin resin, (B) a layered inorganic material, (C) an olefin containing oligomer containing a functional group having polarity and (D) a rubber-like elastic material.
    Type: Grant
    Filed: September 5, 2005
    Date of Patent: July 7, 2015
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Masaharu Ibaragi, Hiroshi Kajiro, Hiroshi Ohishi, Kazushige Niki, Yoshihiro Nohmi
  • Publication number: 20090029245
    Abstract: The present invention provides a resin-coated stainless steel foil capable of maintaining a strong adherence force to the film even in an electrolytic solution to exhibit good corrosion resistance and excellent in the workability, design property and piecing resistance, and a container and a secondary battery each using the resin-coated stainless steel foil. According to the present invention, a resin-coated stainless steel foil having a chromate treatment layer of 2 to 200 nm in thickness on at least one surface of a stainless steel foil and having at least a polyolefin-based resin (A) layer containing a functional group having polarity on the chromate treatment layer; and a container and a secondary battery each using the resin-coated stainless steel foil are provided.
    Type: Application
    Filed: July 28, 2006
    Publication date: January 29, 2009
    Inventors: Masaharu Ibaragi, Hiroshi Kajiro, Hiroshi Ohishi
  • Publication number: 20080075962
    Abstract: The present invention provides a polyolefin-based resin composition for metal coating, which is excellent in separation resistance, weather resistance and corrosion resistance, can be industrially produced without difficulty even by an existing apparatus, and is assured of excellent scratch resistance without using a surface coating agent; a resin film using the composition; and a resin-coated metal material. The polyolefin-based resin composition for metal coating comprises at least (A) a polyolefin-based resin, (B) a layered inorganic material, (C) an olefin-based oligomer containing a functional group having polarity and (D) a rubber-like elastic material.
    Type: Application
    Filed: September 5, 2005
    Publication date: March 27, 2008
    Inventors: Masaharu Ibaragi, Hiroshi Kajiro, Hiroshi Ohishi, Kazushige Niki, Yoshihiro Nohmi