Patents by Inventor Hideo Nitta

Hideo Nitta 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: 10207957
    Abstract: A method for producing a ceramic scintillator comprising the steps of mixing a rare earth compound with sulfuric acid and/or sulfate to cause their reaction to obtain a product; calcining the product to obtain calcined powder; reducing the calcined powder to obtain rare earth oxysulfide powder; molding the rare earth oxysulfide powder to obtain a green body; and sintering the green body; a pulverization step being conducted to adjust the particle sizes of the product and/or the calcined powder at least before the reduction step.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: February 19, 2019
    Assignee: HITACHI METALS, LTD.
    Inventors: Shinsuke Terazawa, Hideo Nitta
  • Patent number: 10053380
    Abstract: There is provided an electrolysis device configured to use unpurified water containing a small amount of ions of alkaline earth metal such as Ca and Mg as raw water, and to have a structure of supplying the raw water to a cathode chamber in which deposition of scale of the alkaline earth metal on the surface of a cathode provided in the cathode chamber can be prevented. The electrolysis device and the apparatus for producing electrolyzed ozone water are configured by an electrolysis cell formed in a manner that a membrane-electrode assembly is configured by a solid polymer electrolyte separation membrane formed by a cation exchange membrane, and an anode and a cathode which are respectively adhered to both surfaces of the solid polymer electrolyte separation membrane, and the membrane-electrode assembly is compressed from both surfaces thereof, and thus the solid polymer electrolyte separation membrane, the anode, and the cathode are adhered to each other.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: August 21, 2018
    Assignees: AQUAECOS LTD., DE NORA PERMELEC LTD
    Inventors: Hideo Nitta, Masashi Hosonuma
  • Patent number: 9899113
    Abstract: A method for producing a scintillator dual array comprising the steps of bonding first and second scintillator bar arrays having different sensitivity distributions of X-ray energy detection and pluralities of parallel grooves with equal gaps, via an intermediate resin layer, such that both scintillator bars are aligned in a lamination direction, cutting the integrally bonded bar array in a direction crossing the scintillator bars, and coating one cut surface of each bonded bar array piece with a resin.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: February 20, 2018
    Assignee: HITACHI METALS, LTD.
    Inventors: Hideo Nitta, Akira Shigekawa, Satoshi Shiota, Hiroyuki Nagatomo
  • Patent number: 9896623
    Abstract: A production method of rare earth oxysulfide comprising a step of mixing a rare earth compound with sulfuric acid and/or sulfate in such a proportion that sulfate ions are 0.75-1.75 mol to 1 mol of a rare earth element, thereby preparing a reaction solution to obtain a product; a step of calcining the product to obtain calcined powder; and a step of reducing the calcined powder to obtain rare earth oxysulfide.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: February 20, 2018
    Assignee: HITACHI METALS, LTD.
    Inventors: Shinsuke Terazawa, Hideo Nitta
  • Publication number: 20170334750
    Abstract: There is provided an electrolysis device configured to use unpurified water containing a small amount of ions of alkaline earth metal such as Ca and Mg as raw water, and to have a structure of supplying the raw water to a cathode chamber in which deposition of scale of the alkaline earth metal on the surface of a cathode provided in the cathode chamber can be prevented. The electrolysis device and the apparatus for producing electrolyzed ozone water are configured by an electrolysis cell formed in a manner that a membrane-electrode assembly is configured by a solid polymer electrolyte separation membrane formed by a cation exchange membrane, and an anode and a cathode which are respectively adhered to both surfaces of the solid polymer electrolyte separation membrane, and the membrane-electrode assembly is compressed from both surfaces thereof, and thus the solid polymer electrolyte separation membrane, the anode, and the cathode are adhered to each other.
    Type: Application
    Filed: June 30, 2016
    Publication date: November 23, 2017
    Applicant: AQUAECOS LTD.
    Inventors: Hideo NITTA, Masashi HOSONUMA
  • Publication number: 20170217784
    Abstract: A fluorescent material has a composition represented by (Gd1??????R?Ce?Tb?)3+a(Al1?u?vGauScv)5?bO12, wherein: R is at least one of Y and Lu; a, b, ?, ?, ?, u and v satisfy ranges below: 0?a?0.1, 0?b?0.1, 0???0.8, 0.0003???0.005, 0.02???0.2, 0.27?u?0.75, and 0?v?0.02; a relative density is 99% or more; and an effective atomic number is 35 or more and 60 or less.
    Type: Application
    Filed: September 30, 2015
    Publication date: August 3, 2017
    Inventor: Hideo NITTA
  • Patent number: 9702985
    Abstract: A method for producing a radiation detector comprising pluralities of first and second cells constituted by scintillators having different compositions for different detection sensitivity distributions of radiation energy, pluralities of light-receiving elements, and reflective layers, comprising a step of forming first and second cell arrays having at least m×n first and second cells via reflective layers from first and second scintillator plates, wherein m and n are natural numbers of 2 or more, which may be the same or different; a step of cutting the first and second cell arrays to obtain first and second single arrays each having at least m×1 first and second cells via reflective layers; a step of aligning the first and second single arrays with a light-receiving element array having at least m×2 light-receiving elements; and a step of adhering the first and second single arrays to the light-receiving element array.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: July 11, 2017
    Assignee: HITACHI METALS, LTD.
    Inventors: Hideo Nitta, Akira Shigekawa
  • Patent number: 9575188
    Abstract: A method for producing a scintillator array comprising fixing a scintillator substrate to a support plate via a double-coated adhesive sheet, at least an adhesive surface thereof to be in contact with the scintillator substrate being thermally peelable; providing the scintillator substrate with lattice-patterned grooves to form pluralities of scintillator cells; filling gaps between the scintillator cells with a liquid hardening reflector resin; curing the liquid hardening reflector resin by heating to form a resin-hardened scintillator cell body; and then peeling the double-coated adhesive sheet from the resin-hardened scintillator cell body by heating.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: February 21, 2017
    Assignee: HITACHI METALS, LTD.
    Inventor: Hideo Nitta
  • Publication number: 20160251573
    Abstract: A method for producing a ceramic scintillator comprising the steps of mixing a rare earth compound with sulfuric acid and/or sulfate to cause their reaction to obtain a product; calcining the product to obtain calcined powder; reducing the calcined powder to obtain rare earth oxysulfide powder; molding the rare earth oxysulfide powder to obtain a green body; and sintering the green body; a pulverization step being conducted to adjust the particle sizes of the product and/or the calcined powder at least before the reduction step.
    Type: Application
    Filed: September 10, 2014
    Publication date: September 1, 2016
    Applicant: HITACHI METALS, LTD.
    Inventors: Shinsuke TERAZAWA, Hideo NITTA
  • Publication number: 20160230085
    Abstract: A production method of rare earth oxysulfide comprising a step of mixing a rare earth compound with sulfuric acid and/or sulfate in such a proportion that sulfate ions are 0.75-1.75 mol to 1 mol of a rare earth element, thereby preparing a reaction solution to obtain a product; a step of calcining the product to obtain calcined powder; and a step of reducing the calcined powder to obtain rare earth oxysulfide.
    Type: Application
    Filed: September 10, 2014
    Publication date: August 11, 2016
    Applicant: HITACHI METALS, LTD.
    Inventors: Shinsuke TERAZAWA, Hideo NITTA
  • Publication number: 20150268357
    Abstract: A method for producing a radiation detector comprising pluralities of first and second cells constituted by scintillators having different compositions for different detection sensitivity distributions of radiation energy, pluralities of light-receiving elements, and reflective layers, comprising a step of forming first and second cell arrays having at least m×n first and second cells via reflective layers from first and second scintillator plates, wherein m and n are natural numbers of 2 or more, which may be the same or different; a step of cutting the first and second cell arrays to obtain first and second single arrays each having at least m×1 first and second cells via reflective layers; a step of aligning the first and second single arrays with a light-receiving element array having at least m×2 light-receiving elements; and a step of adhering the first and second single arrays to the light-receiving element array.
    Type: Application
    Filed: October 23, 2013
    Publication date: September 24, 2015
    Applicant: HITACHI METALS, LTD.
    Inventors: Hideo Nitta, Akira Shigekawa
  • Patent number: 9046615
    Abstract: A method for producing a dual-array-type scintillator array, comprising forming first and second scintillator sticks having cell portions by providing first and second scintillator substrates with pluralities of grooves and cutting them in directions perpendicular to the grooves; arranging and fixing plural sets of the first and second scintillator sticks with the cell portions downward on a support plate via spacers; removing base portions from the first and second scintillator sticks by grinding to form first and second cell arrays comprising the first and second cells each arranged in line; forming an integral resin-cured assembly by filling the grooves and gaps of the first and second cell arrays with a resin for a reflector, curing the resin, and then removing the support plate; and cutting a resin layer between the first and second cell arrays in adjacent sets to divide the resin-cured assembly to sets of the first and second cell arrays.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: June 2, 2015
    Assignee: HITACHI METALS, LTD.
    Inventors: Akira Shigekawa, Hideo Nitta, Satoshi Shiota
  • Publication number: 20150059963
    Abstract: A method for producing a scintillator array comprising fixing a scintillator substrate to a support plate via a double-coated adhesive sheet, at least an adhesive surface thereof to be in contact with the scintillator substrate being thermally peelable; providing the scintillator substrate with lattice-patterned grooves to form pluralities of scintillator cells; filling gaps between the scintillator cells with a liquid hardening reflector resin; curing the liquid hardening reflector resin by heating to form a resin-hardened scintillator cell body; and then peeling the double-coated adhesive sheet from the resin-hardened scintillator cell body by heating.
    Type: Application
    Filed: March 14, 2013
    Publication date: March 5, 2015
    Applicant: HITACHI METALS, LTD.
    Inventor: Hideo Nitta
  • Publication number: 20150033541
    Abstract: A method for producing a scintillator dual array comprising the steps of bonding first and second scintillator bar arrays having different sensitivity distributions of X-ray energy detection and pluralities of parallel grooves with equal gaps, via an intermediate resin layer, such that both scintillator bars are aligned in a lamination direction, cutting the integrally bonded bar array in a direction crossing the scintillator bars, and coating one cut surface of each bonded bar array piece with a resin.
    Type: Application
    Filed: March 7, 2013
    Publication date: February 5, 2015
    Applicant: HITACHI METALS, LTD.
    Inventors: Hideo Nitta, Akira Shigekawa, Satoshi Shiota, Hiroyuki Nagatomo
  • Publication number: 20130125385
    Abstract: A method for producing a dual-array-type scintillator array, comprising forming first and second scintillator sticks having cell portions by providing first and second scintillator substrates with pluralities of grooves and cutting them in directions perpendicular to the grooves; arranging and fixing plural sets of the first and second scintillator sticks with the cell portions downward on a support plate via spacers; removing base portions from the first and second scintillator sticks by grinding to form first and second cell arrays comprising the first and second cells each arranged in line; forming an integral resin-cured assembly by filling the grooves and gaps of the first and second cell arrays with a resin for a reflector, curing the resin, and then removing the support plate; and cutting a resin layer between the first and second cell arrays in adjacent sets to divide the resin-cured assembly to sets of the first and second cell arrays.
    Type: Application
    Filed: April 24, 2012
    Publication date: May 23, 2013
    Applicant: HITACHI METALS, LTD.
    Inventors: Akira Shigekawa, Hideo Nitta, Satoshi Shiota
  • Publication number: 20130032491
    Abstract: This invention is to provide a membrane-electrode assembly, an electrolytic cell using the same, a method and an apparatus for producing ozone water, a method for disinfection and a method for wastewater or waste fluid treatment, by using which allow electrolysis reaction products or decomposition products to be produced at a high efficiency, channel pressure drop to be minimized, and the apparatus to be designed compact in size without sacrificing the production capacity. This invention relates to a membrane-electrode assembly, comprising an anode having a plurality of through-holes of 0.1 mm or more in diameter; a cathode having a plurality of through-holes of 0.1 mm or more in diameter at the same sites as in the anode; and a solid polymer electrolyte membrane coated on one face or the entire face of at least one of the anode and the cathode with the through-holes being maintained, wherein the anode, the solid polymer electrolyte membrane and the cathode are tightly adhered.
    Type: Application
    Filed: November 29, 2010
    Publication date: February 7, 2013
    Applicants: PERMELEC ELECTRODE LTD., AQUAECOS LTD.
    Inventors: Hideo Nitta, Masashi Hosonuma
  • Publication number: 20130026096
    Abstract: This invention is to provide a membrane-electrode assembly, an electrolytic cell using the same, a method and an apparatus for producing ozone water, a method for disinfection and a method for wastewater or waste fluid treatment, by using which electrolysis reaction products or decomposition products obtained at the anode are produced at a high efficiency; channel pressure drop is minimized; and the apparatus is designed in compact size without sacrificing the production capacity. This invention relates to a membrane-electrode assembly comprising a solid polymer electrolyte membrane having a cation exchange membrane, an anode and a cathode tightly adhered to the respective surfaces of the solid polymer electrolyte membrane, with a plurality of through-holes with 0.
    Type: Application
    Filed: November 29, 2010
    Publication date: January 31, 2013
    Applicants: PERMELEC ELECTRODE LTD., AQUAECOS LTD.
    Inventors: Hideo Nitta, Masashi Hosonuma
  • Patent number: 7932499
    Abstract: Disclosed is a multi-channel array radiation detector that can provide high-definition and high-resolution CT photo-images. The radiation detector has semiconductor photo-detecting elements arranged lengthwise and breadth-wise in a lattice manner and scintillator elements arranged on them one-to-one. The scintillator elements have thin metal light-reflecting material layers formed on side surfaces of the scintillator elements, and a radiation shielding material layer composed of resin blended with heavy metal element particles is filled in between adjacent metal light-reflecting material layers.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: April 26, 2011
    Assignee: Hitachi Metals, Ltd.
    Inventors: Shinji Furuichi, Hideo Nitta
  • Publication number: 20100219349
    Abstract: Disclosed is a multi-channel array radiation detector that can provide high-definition and high-resolution CT photo-images. The radiation detector has semiconductor photo-detecting elements arranged lengthwise and breadth-wise in a lattice manner and scintillator elements arranged on them one-to-one. The scintillator elements have thin metal light-reflecting material layers formed on side surfaces of the scintillator elements, and a radiation shielding material layer composed of resin blended with heavy metal element particles is filled in between adjacent metal light-reflecting material layers.
    Type: Application
    Filed: March 13, 2006
    Publication date: September 2, 2010
    Applicant: Hitachi Metals, Ltd.
    Inventors: Shinji Furuichi, Hideo Nitta
  • Patent number: 5736255
    Abstract: A sealing material having excellent resistance to attack by molten metals, such as molten zinc, comprising aluminum phosphate/silicon dioxide-based material. The invention also relates to a method for coating articles with such sealing material.
    Type: Grant
    Filed: October 28, 1993
    Date of Patent: April 7, 1998
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: Satoshi Sasaki, Hideo Nitta