Patents by Inventor Keiji Izumi

Keiji Izumi 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: 10724242
    Abstract: The present invention relates to a metal roofing material 1 that is arranged on an eave-side metal roofing material in an eave-ridge direction 6 of a roof so as to overlap the metal roofing material and the eave-side metal roofing material. The metal roofing material includes a front substrate 2 made of a metal sheet and including a body portion 20 formed in a box shape; a back substrate 3 arranged on the back side of the front substrate 2 so as to cover an opening of the body portion 20; a core material 4 filled between the body portion 20 and the back substrate 3; and at least one plate reinforcing member 5 that is embedded in the core material 4 at a position closer to the back substrate 3 than a top plate of the body portion 20 or that is disposed in contact with the outer surface of the back substrate 3.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: July 28, 2020
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Kenichi Okubo, Motonori Kurotaki, Shuichi Sugita, Keiji Izumi, Tomoyuki Nagatsu, Yuugo Oota, Katsunari Norita, Keita Noguchi, Norimasa Miura
  • Publication number: 20200199875
    Abstract: A metallic roof material 1 according to the present invention comprises: a front substrate 10 made of a metal sheet, the front substrate 10 comprising a body portion 100 formed into a box shape; a back substrate 11 arranged on a back side of the front substrate 10 so as to cover an opening of the body portion 100; and a core material 12 filled between the body portion 100 and the back substrate 11, the metallic roof material 1 being tightened to a roof base by driving at least one tightening member into the body portion 100, wherein a top plate portion 101 of the body portion 100 comprises at least one protruding rib 3 comprised of at least one protrusion 30 disposed along a side of a polygon or along a circle, and wherein the metallic roof material 1 is configured such that the tightening member is driven into an inner region 3a of the protruding rib 3.
    Type: Application
    Filed: May 23, 2017
    Publication date: June 25, 2020
    Inventors: Keiji Izumi, Yuugo Oota, Tomoyuki Nagatsu, Norimasa Miura, Katsunari Norita
  • Patent number: 10597874
    Abstract: A body portion 100 of a front substrate 10 includes first side surfaces 105 and second side surfaces 106, each of the second side surfaces 106 being arranged at a position protruding toward the outer side along a width direction 100a than the first side surface 105. Each of the first side surfaces 105 includes a side flange 105a. A protruding width of the side flange 105a from the first side surface 105 is equal to or less than a protruding width of the second side surface 106 from the first side surface 105. A metal roofing member 1 is arranged on a roof base while abutting at least the second side surface 106 against a second side surface of other metal roofing member.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: March 24, 2020
    Assignee: Nippon Steel Nisshin Co., Ltd.
    Inventors: Keiji Izumi, Yuugo Oota, Tomoyuki Nagatsu, Norimasa Miura, Katsunari Norita, Kenichi Okubo, Motonori Kurotaki
  • Patent number: 10519661
    Abstract: A metal roofing material according to the present invention comprises: a front substrate 2 having a body portion 20, the body portion 20 being comprised of a metal sheet and being formed into a box shape; a back substrate disposed on a back side of the front substrate 2 so as to cover an opening of the body portion 20; a core material filled between the body portion 20 and the back substrate, the metal roofing material being arranged side by side on a roof base together with other metal roofing materials, wherein at least one edge indicator 22 in the form of protrusion is provided at an edge portion of a top plate 20a of the body portion 20.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: December 31, 2019
    Assignee: Nippon Steel Nisshin Co., Ltd.
    Inventors: Keiji Izumi, Yuugo Oota, Tomoyuki Nagatsu
  • Patent number: 10400455
    Abstract: A metal roofing member 1 is disposed side by side with another metal roofing member on a roof base. The metal roofing member 1 has a box-shaped front substrate 10 made of a metal sheet, a rear substrate 11 disposed on the rear side of the front substrate 10, so as to cover an opening of the front substrate 10, and a core material 12 made from a foam resin and filled in between the front substrate 10 and the rear substrate 11. The front substrate 10 results from forming the metal sheet into a box shape. The front substrate 10 has a side wall portion that is continuous in the circumferential direction and is formed by performing drawing or bulging processing on the metal sheet. The front substrate 10 has a height of 4 mm to 8 mm.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: September 3, 2019
    Assignee: NIPPON STEEL NISSHIN CO., LTD.
    Inventors: Keiji Izumi, Yuugo Oota, Tomoyuki Nagatsu, Norimasa Miura, Katsunari Norita, Kenichi Okubo
  • Publication number: 20190264448
    Abstract: A body portion 100 of a front substrate 10 includes first side surfaces 105 and second side surfaces 106, each of the second side surfaces 106 being arranged at a position protruding toward the outer side along a width direction 100a than the first side surface 105. Each of the first side surfaces 105 includes a side flange 105a. A protruding width of the side flange 105a from the first side surface 105 is equal to or less than a protruding width of the second side surface 106 from the first side surface 105. A metal roofing member 1 is arranged on a roof base while abutting at least the second side surface 106 against a second side surface of other metal roofing member.
    Type: Application
    Filed: March 24, 2016
    Publication date: August 29, 2019
    Inventors: Keiji Izumi, Yuugo Oota, Tomoyuki Nagatsu, Norimasa Miura, Katsunari Norita, Kenichi Okubo, Motonori Kurotaki
  • Publication number: 20190203473
    Abstract: A metal roofing material according to the present invention comprises: a front substrate 2 having a body portion 20, the body portion 20 being comprised of a metal sheet and being formed into a box shape; a back substrate disposed on a back side of the front substrate 2 so as to cover an opening of the body portion 20; a core material filled between the body portion 20 and the back substrate, the metal roofing material being arranged side by side on a roof base together with other metal roofing materials, wherein at least one edge indicator 22 in the form of protrusion is provided at an edge portion of a top plate 20a of the body portion 20.
    Type: Application
    Filed: October 3, 2016
    Publication date: July 4, 2019
    Inventors: Keiji Izumi, Yuugo Oota, Tomoyuki Nagatsu
  • Publication number: 20190173106
    Abstract: A fuel cell FC includes: a cell structure 3 including an anode electrode, a cathode electrode, and an electrolyte 5 that intervenes between the anode electrode 7 and the cathode electrode 6; and a pair of separators 4 that forms an anode gas flow area G1 and a cathode gas flow area G2 between the cell structure 3 and an anode-side separator and a cathode-side separator of the pair of separators 4, respectively. The fuel cell further includes: a first sealing portion S1 and a second sealing portion S2 that are disposed on an anode electrode side of the cell structure 3 to enclose respectively the anode gas flow area G1 and an outer periphery of the first sealing portion S1. A flow path F for oxygen-containing gas is formed between the first sealing portion S1 and the second sealing portion S2. This double sealing structure prevents leakage of the anode gas.
    Type: Application
    Filed: July 29, 2016
    Publication date: June 6, 2019
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Keiji ICHIHARA, Takao IZUMI, Keita IRITSUKI
  • Publication number: 20190119917
    Abstract: The present invention relates to a metal roofing material 1 that is arranged on an eave-side metal roofing material in an eave-ridge direction 6 of a roof so as to overlap the metal roofing material and the eave-side metal roofing material. The metal roofing material includes a front substrate 2 made of a metal sheet and including a body portion 20 formed in a box shape; a back substrate 3 arranged on the back side of the front substrate 2 so as to cover an opening of the body portion 20; a core material 4 filled between the body portion 20 and the back substrate 3; and at least one plate reinforcing member 5 that is embedded in the core material 4 at a position closer to the back substrate 3 than a top plate of the body portion 20 or that is disposed in contact with the outer surface of the back substrate 3.
    Type: Application
    Filed: July 11, 2016
    Publication date: April 25, 2019
    Inventors: Kenichi Okubo, Motonori Kurotaki, Shuichi Sugita, Keiji Izumi, Tomoyuki Nagatsu, Yuugo Oota, Katsunari Norita, Keita Noguchi, Norimasa Miura
  • Patent number: 10233645
    Abstract: A metal roofing member 1 has a front substrate 10, a rear substrate 11 and a core material 12. The front substrate 10 is made of a metal sheet. In the front substrate 10, a box-shaped body portion 100 and a flange portion 110 extending from the body portion 100 are provided. The flange portion 110 is formed by folding back, over the rear side of the front substrate 10, of a metal sheet 111 extending outwards of the body portion 100 in a direction 100b perpendicular to a height direction 100a of the body portion 100, from a lower edge of the body portion 100, in such a manner that the metal sheet 111 wraps around the rear substrate 11. The metal roofing member 1 is disposed on a roof base, with the flange portion 110 butting against a flange portion 110 of another metal roofing member.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: March 19, 2019
    Assignee: NISSHIN STEEL CO., LTD.
    Inventors: Keiji Izumi, Yuugo Oota, Tomoyuki Nagatsu, Norimasa Miura, Katsunari Norita, Kenichi Okubo
  • Publication number: 20180213631
    Abstract: There is provided a static electricity removal structure in a low-humidity space, in which static electricity can be removed with high efficiency in the low-humidity space by using a static electricity removal device. A low-humidity space is configured such that dehumidified air is supplied from one side of the low-humidity space into the low-humidity space through a blowout surface material in which ventilation pore is formed, and exhausting is performed from the other side of the low-humidity space, which opposes the blowout surface material. A static electricity removal device is disposed on a downstream side of the blowout surface material.
    Type: Application
    Filed: March 26, 2018
    Publication date: July 26, 2018
    Inventors: Taichi Sakamoto, Takashi Mukai, Yuta Ikeuchi, Masahiro Yanagida, Keiji Izumi, Teppei Taniguchi
  • Publication number: 20180080228
    Abstract: A metal roofing member 1 has a front substrate 10, a rear substrate 11 and a core material 12. The front substrate 10 is made of a metal sheet. In the front substrate 10, a box-shaped body portion 100 and a flange portion 110 extending from the body portion 100 are provided. The flange portion 110 is formed by folding back, over the rear side of the front substrate 10, of a metal sheet 111 extending outwards of the body portion 100 in a direction 100b perpendicular to a height direction 100a of the body portion 100, from a lower edge of the body portion 100, in such a manner that the metal sheet 111 wraps around the rear substrate 11. The metal roofing member 1 is disposed on a roof base, with the flange portion 110 butting against a flange portion 110 of another metal roofing member.
    Type: Application
    Filed: July 8, 2015
    Publication date: March 22, 2018
    Applicant: NISSHIN STEEL CO., LTD.
    Inventors: Keiji IZUMI, Yuugo OOTA, Tomoyuki NAGATSU, Norimasa MIURA, Katsunari NORITA, Kenichi OKUBO
  • Publication number: 20180066432
    Abstract: A metal roofing member 1 is disposed side by side with another metal roofing member on a roof base. The metal roofing member 1 has a box-shaped front substrate 10 made of a metal sheet, a rear substrate 11 disposed on the rear side of the front substrate 10, so as to cover an opening of the front substrate 10, and a core material 12 made from a foam resin and filled in between the front substrate 10 and the rear substrate 11. The front substrate 10 results from forming the metal sheet into a box shape. The front substrate 10 has a side wall portion that is continuous in the circumferential direction and is formed by performing drawing or bulging processing on the metal sheet. The front substrate 10 has a height of 4 mm to 8 mm.
    Type: Application
    Filed: July 8, 2015
    Publication date: March 8, 2018
    Applicant: NISSHIN STEEL CO., LTD.
    Inventors: Keiji IZUMI, Yuugo OOTA, Tomoyuki NAGATSU, Norimasa MIURA, Katsunari NORITA, Kenichi OKUBO
  • Publication number: 20110180141
    Abstract: [Problem] To provide a dye-sensitized solar cell having excellent photoelectric conversion efficiency and capable of saving the amount of a catalyst used, by using an inexpensive metal material showing excellent corrosion resistance in an electrolyte of a dye-sensitized solar cell for a counter electrode. [Means for Resolution] A dye-sensitized solar cell comprising a photoelectrode comprising a light-transmitting and conductive material and a semiconductor layer having a sensitizing dye supported thereon, formed on the surface of the light-transmitting and conductive material, an electrolyte and a counter electrode, wherein the counter is constituted of a material comprising a substrate comprising stainless steel containing Cr: 16% by mass or more, and Mo: 0.3% by mass or more, and a catalyst thin film layer formed on the surface of the substrate, and the semiconductor layer of the photoelectrode and the catalyst thin film, layer of the counter electrode face through the electrolyte.
    Type: Application
    Filed: October 9, 2009
    Publication date: July 28, 2011
    Applicant: NISSHIN STEEL CO., LTD.
    Inventors: Yoshikatu Nishida, Takahiro Fujii, Keiji Izumi, Hironori Arakawa, Takeshi Yamaguchi
  • Patent number: 7879508
    Abstract: A stainless steel sheet useful as a separator for a low-temperature fuel cell has the surface state that a lot of fine projections (p) stand close together around many fine pits (d) formed over a whole surface. The surface state is realized by alternating electrolytic etching in a ferric chloride solution. When the stainless steel separator is built in a fuel cell, contact resistance between the separator and a graphite electrode is kept at a lower level even in a corrosive atmosphere. Consequently, the fuel cell can be driven with high power-generating efficiency over a long term even under severely corrosive conditions without generation of massive Joule heat.
    Type: Grant
    Filed: January 14, 2009
    Date of Patent: February 1, 2011
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Tsutomu Miyano, Takeshi Shimizu, Keiji Izumi, Yoshikazu Morita, Shinichi Kamoshida, Toshiki Kingetsu
  • Patent number: 7608119
    Abstract: A stainless steel sheet useful as a separator for a low-temperature fuel cell has the surface state that a lot of fine projections (p) stand close together around many fine pits (d) formed over a whole surface. The surface state is realized by alternating electrolytic etching in a ferric chloride solution. When the stainless steel separator is built in a fuel cell, contact resistance between the separator and a graphite electrode is kept at a lower level even in a corrosive atmosphere. Consequently, the fuel cell can be driven with high power-generating efficiency over a long term even under severely corrosive conditions without generation of massive Joule heat.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: October 27, 2009
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Tsutomu Miyano, Takeshi Shimizu, Keiji Izumi, Yoshikazu Morita, Shinichi Kamoshida, Toshiki Kingetsu
  • Publication number: 20090130535
    Abstract: A stainless steel sheet useful as a separator for a low-temperature fuel cell has the surface state that a lot of fine projections (p) stand close together around many fine pits (d) formed over a whole surface. The surface state is realized by alternating electrolytic etching in a ferric chloride solution. When the stainless steel separator is built in a fuel cell, contact resistance between the separator and a graphite electrode is kept at a lower level even in a corrosive atmosphere. Consequently, the fuel cell can be driven with high power-generating efficiency over a long term even under severely corrosive conditions without generation of massive Joule heat.
    Type: Application
    Filed: January 14, 2009
    Publication date: May 21, 2009
    Applicant: NISSHIN STEEL CO., LTD.
    Inventors: Tsutomu Miyano, Takeshi Shimizu, Keiji Izumi, Yoshikazu Morita, Shinichi Kamoshida, Toshiki Kingetsu
  • Publication number: 20080169747
    Abstract: A display device has a configuration in which a translucent white filling material and a powder particle light storage material are mixed and filled in a space formed by sandwiching a spacer plate having a predetermined thickness between a display plate and a reflector plate. Light emitted by particles of the light storage material is scattered by the translucent white filling material. Thus, high luminance light can be evenly emitted from the entire surface of the display plate. Moreover, viscosity of the filling material enables manufacturing while maintaining a state where the particles of the light storage material are averagely dispersed. Accordingly, the device can be manufactured by use of the spacer plate having a large thickness. Consequently, a display device having high luminance and a long light emission time can be provided by filling a large amount of the light storage material.
    Type: Application
    Filed: December 26, 2007
    Publication date: July 17, 2008
    Applicant: Aya Izumi
    Inventor: Keiji IZUMI
  • Patent number: 7070877
    Abstract: A stainless steel separator, which is good of corrosion-resistance and low of contact-resistance, is proposed for a fuel cell. Its surface faced to a fuel electrode is pickled, which the other surface faced to an oxidizing electrode is roughened by electrolytic etching or the like. The roughening treatment may be performed before or after pickling and passivation. The roughened surface of the stainless steel separator without pickling or passivation may be faced to the oxidizing electrode.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: July 4, 2006
    Assignees: Nisshin Steel Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshikazu Morita, Shinichi Kamoshida, Takeshi Shimizu, Tsutomu Miyano, Keiji Izumi, Yuichi Yagami, Tsuyoshi Takahashi, Yoshiaki Kajikawa, Kouta Kodama
  • Patent number: D841192
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: February 19, 2019
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Keiji Izumi, Yuugo Oota, Tomoyuki Nagatsu