Patents by Inventor Kouichi Hirata

Kouichi Hirata 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: 7678448
    Abstract: The gas barrier film of the present invention is a gas barrier film comprising a base material, and an inorganic thin film composed of a silicon oxide film formed on one or both surfaces of the base material, wherein radical density of the Pb center of the silicon oxide film observed by an electron spin resonance method (ESR method) is from 1×1016 to 1×1019 spins/cm3, or a gas barrier film comprising a base material, an inorganic thin film containing silicon oxide and the other metal component formed on one or both surfaces of the base material, wherein radical density of the Pb center of the silicon oxide in the inorganic thin film observed by an ESR method is from 13×1014 to 3×1017 spins/mol, and a laminate wherein at least one paper and/or plastic film is laminated on the gas barrier film.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: March 16, 2010
    Assignee: Mitsubishi Plastics, Inc.
    Inventors: Tooru Hachisuka, Shigenobu Yoshida, Chiharu Okawara, Yoshinori Kobayashi, Kenji Ito, Hisashi Togashi, Kouichi Hirata
  • Publication number: 20080254266
    Abstract: The gas barrier film of the present invention is a gas barrier film comprising a base material, and an inorganic thin film composed of a silicon oxide film formed on one or both surfaces of the base material, wherein radical density of the Pb center of the silicon oxide film observed by an electron spin resonance method (ESR method) is from 1×1016 to 1×1019 spins/cm3, or a gas barrier film comprising a base material, an inorganic thin film containing silicon oxide and the other metal component formed on one or both surfaces of the base material, wherein radical density of the Pb center of the silicon oxide in the inorganic thin film observed by an ESR method is from 13×1014 to 3×1017 spins/mol, and a laminate wherein at least one paper and/or plastic film is laminated on the gas barrier film.
    Type: Application
    Filed: January 26, 2005
    Publication date: October 16, 2008
    Applicants: Mitsubishi Plastics, INC., National Institute of Advanced Industrial Science and Technology
    Inventors: Tooru Hachisuka, Shigenobu Yoshida, Chiharu Okawara, Yoshinori Kobayashi, Kenji Ito, Hisashi Togashi, Kouichi Hirata
  • Patent number: 6551548
    Abstract: An apparatus for producing reduced iron, and a compact drying method for application to the apparatus are disclosed. The apparatus comprises a pelletizer or a briquetter for mixing and agglomerating coal as a reducing agent and iron ore as iron oxide to form compacts, a dryer for drying the compacts, a circular rotary hearth type reducing furnace for reducing the dried compacts in a high temperature atmosphere, a first heat exchanger for performing heat exchange between a hot off-gas discharged from the reducing furnace and combustion air to be supplied to the reducing furnace, and coolers for cooling the hot off-gas. A second heat exchanger for heating drying air is disposed on an exit side of the first heat exchanger. The drying air heated by the second heat exchanger is supplied to the dryer to dry the compacts with the drying air which is scant in moisture. Consequently, highly efficient, stable drying in the dryer can be performed, and high quality reduced iron can be produced stably.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: April 22, 2003
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Susumu Kamikawa, Kouichi Hirata, Hironori Fujioka, Hideaki Mizuki, Keiichi Sato
  • Patent number: 6482351
    Abstract: An apparatus for producing reduced iron dries agglomerates, pelletized from a powdery mixture of an iron oxide powder and a reducing agent, in a drying chamber, preheats the dried agglomerates in a preheating chamber, and then reduces the preheated agglomerates in a high temperature atmosphere of a reducing furnace. In the preheating chamber, an off-gas from the reducing furnace is convected to preheat the dried agglomerates. A decrease in the fuel cost, and downsizing of the equipment can be achieved by effective use of the sensible heat of the off-gas discharged from the reducing furnace. Moreover, a downsized, simplified system for treatment of the off-gas is realized by decreasing the amount of the off-gas.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: November 19, 2002
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Susumu Kamikawa, Kouichi Hirata, Yoshimitsu Onaka
  • Patent number: 6451085
    Abstract: In the production of reduced iron by agglomerating a mixed powder of an iron material and a reducing agent to form compacts like briquettes or pellets, and reducing the compacts in a high temperature atmosphere, when the temperature of reduced compacts is 900° C. or higher, the oxide content in the reduced compacts is set at 11% or more, and the basicity of the reduced compacts is set at 0.5 or higher.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: September 17, 2002
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Susumu Kamikawa, Kouichi Hirata, Hironori Fujioka, Hideaki Mizuki, Keiichi Sato
  • Patent number: 6413471
    Abstract: An apparatus for producing reduced iron by agglomerating a mixed powder of an iron material and a reducing agent to form compacts like briquettes or pellets, and reducing the compacts in a high temperature atmosphere is disclosed. In the apparatus, a rotary hearth in an annular form is rotatably supported. Right and left furnace walls and a ceiling are provided to cover an area above the rotary hearth, thereby forming a space portion in a high temperature atmosphere. A compact supply portion, and a compact discharge portion are provided adjacently in the ceiling. Partitioning members are provided as partitions between the compact supply portion, the compact discharge portion, and the high temperature atmosphere space portion.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: July 2, 2002
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Susumu Kamikawa, Kouichi Hirata, Hironori Fujioka, Hideaki Mizuki, Keiichi Sato, Akihiro Santo
  • Patent number: 6372016
    Abstract: An apparatus for producing reduced iron, and a compact drying method for application to the apparatus are disclosed. The apparatus comprises a pelletizer or a briquetter for mixing and agglomerating coal as a reducing agent and iron ore as iron oxide to form compacts, a dryer for drying the compacts, a circular rotary hearth type reducing furnace for reducing the dried compacts in a high temperature atmosphere, a first heat exchanger for performing heat exchange between a hot off-gas discharged from the reducing furnace and combustion air to be supplied to the reducing furnace, and coolers for cooling the hot off-gas. A second heat exchanger for heating drying air is disposed on an exit side of the first heat exchanger. The drying air heated by the second heat exchanger is supplied to the dryer to dry the compacts with the drying air scant in moisture. Consequently, highly efficient, stable drying in the dryer can be performed, and high quality reduced iron can be produced stably.
    Type: Grant
    Filed: July 5, 2000
    Date of Patent: April 16, 2002
    Assignee: Mitsubishi Heavy Industries, LTD
    Inventors: Susumu Kamikawa, Kouichi Hirata, Hironori Fujioka, Hideaki Mizuki, Keiichi Sato
  • Publication number: 20020030309
    Abstract: An apparatus for producing reduced iron, and a compact drying method for application to the apparatus are disclosed. The apparatus comprises a pelletizer or a briquetter for mixing and agglomerating coal as a reducing agent and iron ore as iron oxide to form compacts, a dryer for drying the compacts, a circular rotary hearth type reducing furnace for reducing the dried compacts in a high temperature atmosphere, a first heat exchanger for performing heat exchange between a hot off-gas discharged from the reducing furnace and combustion air to be supplied to the reducing furnace, and coolers for cooling the hot off-gas. A second heat exchanger for heating drying air is disposed on an exit side of the first heat exchanger. The drying air heated by the second heat exchanger is supplied to the dryer to dry the compacts with the drying air scant in moisture. Consequently, highly efficient, stable drying in the dryer can be performed, and high quality reduced iron can be produced stably.
    Type: Application
    Filed: September 17, 2001
    Publication date: March 14, 2002
    Applicant: Mitsubishi Heavy Industries, Ltd.
    Inventors: Susumu Kamikawa, Kouichi Hirata, Hironori Fujioka, Hideaki Mizuki, Keiichi Sato
  • Publication number: 20020003324
    Abstract: An apparatus for producing reduced iron dries agglomerates, pelletized from a powdery mixture of an iron oxide powder and a reducing agent, in a drying chamber, preheats the dried agglomerates in a preheating chamber, and then reduces the preheated agglomerates in a high temperature atmosphere of a reducing furnace. In the preheating chamber, an off-gas from the reducing furnace is convected to preheat the dried agglomerates. A decrease in the fuel cost, and downsizing of the equipment can be achieved by effective use of the sensible heat of the off-gas discharged from the reducing furnace. Moreover, a downsized, simplified system for treatment of the off-gas is realized by decreasing the amount of the off-gas.
    Type: Application
    Filed: April 10, 2001
    Publication date: January 10, 2002
    Inventors: Susumu Kamikawa, Kouichi Hirata, Yoshimitsu Onaka
  • Publication number: 20010030389
    Abstract: In the production of reduced iron by agglomerating a mixed powder of an iron material and a reducing agent to form compacts like briquettes or pellets, and reducing the compacts in a high temperature atmosphere, when the temperature of reduced compacts is 900° C. or higher, the oxide content in the reduced compacts is set at 11 % or more, and the basicity of the reduced compacts is set at 0.5 or higher.
    Type: Application
    Filed: June 25, 2001
    Publication date: October 18, 2001
    Applicant: Mitsubishi Heavy Industries, Ltd.
    Inventors: Susumu Kamikawa, Kouichi Hirata, Hironori Fujioka, Hideaki Mizuki, Keiichi Sato
  • Patent number: 5900052
    Abstract: There is provided a belt coating material for a belt type continuous casting, which is capable of adsorbing the intermediate between a cast slab and the coating material to prevent the intermediate from remaining on the slab, and reducing the averaged heat flux during the casting to avoid an occurrence of cracking in a medium carbon steel. The belt coating material comprises: (1) a powder having a composition comprising 10 to 40 weight % of SiO.sub.2, 1 to 10 weight % of Al.sub.2 O.sub.3, 10 to 40 weight % of CaO, 10 to 30 weight % of Na.sub.2 O, 1 to 10 weight % of MgO, 10 to 20 weight % of F, and 1 to 5 weight % of LiO.sub.2, the powder being prepared by once melting the blended components, solidifying the melt, and crushing it into the powder to adjust the average grain diameter of the powder to be equal to or smaller than 10 .mu.m; (2) 0.1 to 10 weight % of graphite mixed into the powder to provide a mixture, the graphite having the same grain diameter with the powder; and (3) 0.
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: May 4, 1999
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Hiroshi Nakajima, Kouichi Hirata, Hironori Fujioka
  • Patent number: 5382302
    Abstract: A high tensile steel sheet excelling in workability and stretch flanging formability, which is of a composite texture composed of a ferrite phase and a 2nd phase selected from the group consisting of martensite, bainite, pearlite, retained austenite and cold-transformed ferrite, wherein the volume fraction of the 2nd phase is hoe less than about 1.3 times higher at an outer region of the steel sheet than the volume fraction of the 2nd phase in a central region of the sheet thickness.
    Type: Grant
    Filed: April 13, 1994
    Date of Patent: January 17, 1995
    Assignee: Kawasaki Steel Corporation
    Inventors: Susumu Okada, Kouichi Hirata, Susumu Sato, Masahiko Morita, Tsuguhiko Nakagawa
  • Patent number: 5372654
    Abstract: The present invention provides a steel sheet for press working that exhibits excellent stiffness and satisfactory press workability. The steel sheet for press working includes: a composition of C+N+B=0.007 to 1.0 wt % in a region from the surface of the steel sheet to a position of 5% of the thickness in a direction of the thickness in at least either of the surface layers; a pole intensity of [{321}+{211}]/{100}.gtoreq.1.2 in a vertical direction to the sheet surface realized at a 3% thickness position in the direction of the thickness from the surface; and a composition of C+N+B=0.010 wt % less than in the central portion 40% except for two 30% portions of the two surface layers in the direction of the thickness.
    Type: Grant
    Filed: September 17, 1993
    Date of Patent: December 13, 1994
    Assignee: Kawasaki Steel Corporation
    Inventors: Susumu Satoh, Susumu Okada, Kouichi Hirata, Masahiko Morita, Tsuguhiko Nakagawa
  • Patent number: 5332453
    Abstract: A high tensile steel sheet excelling in workability and stretch flanging formability, which is of a composite texture composed of a ferrite phase and a 2nd phase selected from the group consisting of martensite, bainite, pearlite, retained austenite and cold-transformed ferrite, wherein the volume fraction of the 2nd phase is not less than about 1.3 times higher at an outer region of the steel sheet than the volume fraction of the 2nd phase in a central region of the sheet thickness.
    Type: Grant
    Filed: March 5, 1993
    Date of Patent: July 26, 1994
    Assignee: Kawasaki Steel Corporation
    Inventors: Susumu Okada, Kouichi Hirata, Susumu Sato, Masahiko Morita, Tsuguhiko Nakagawa