Patents by Inventor Hajime Kuwabara

Hajime Kuwabara 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: 9255899
    Abstract: A method of non-destructive inspection of a subject body including an element is comprised of irradiating the subject body with a neutron ray through a first measurement point and a second measurement point; measuring an elapsed time after a first time point when a resonant neutron specific to the element passes through the first measurement point and before a second time point when a prompt gamma ray made emitted by the resonant neutron from the subject body is detected at the second measurement point; and determining a location of the element in the subject body by the first measurement point, the second measurement point, a relative position toward a surface of the subject body, and the elapsed time.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: February 9, 2016
    Assignee: IHI Corporation
    Inventors: Hiroyuki Nose, Hajime Kuwabara, Tetsuya Kobayashi
  • Patent number: 9000402
    Abstract: An LPP EUV light source includes a vacuum chamber 12 that is maintained in a vacuum environment; a gas jet device 14 that forms a hypersonic steady gas jet 1 of the target substance inside the vacuum chamber so as to be collected; and a laser device 16 that collects and radiates a laser beam 3 to the hypersonic steady gas jet, wherein plasma is produced by exciting the target substance at the light collecting point 2 of the laser beam and EUV light 4 is emitted therefrom.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: April 7, 2015
    Assignees: IHI Corporation, Tokyo Institute of Technology
    Inventors: Hajime Kuwabara, Kazuhiko Horioka
  • Patent number: 8907567
    Abstract: A plasma light source includes a pair of coaxial electrodes 10 facing each other, a radiation environment sustaining device 20 that supplies a plasma medium into the insides of the coaxial electrodes and holds the coaxial electrodes at a temperature and a pressure suitable for plasma generation, and a voltage application device 30 that applies a discharge voltage of an inverted polarity to each of the coaxial electrodes. Tubular discharge 4 is formed between the pair of coaxial electrodes and plasma 3 is confined in an axial direction of the coaxial electrodes.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: December 9, 2014
    Assignees: IHI Corporation, Tokyo Institute of Technology
    Inventors: Hajime Kuwabara, Kazuhiko Horioka
  • Patent number: 8680477
    Abstract: A method of non-destructive inspection of a subject body including one or more elements comprises irradiating the subject body with a neutron ray along an axis line passing through a reference point; synchronously detecting gamma rays from directions inclined at equal angles to the axis line at a plurality of measurement points disposed to have equivalent intervals radially from the axis line, respectively; measuring the detected gamma rays in a plurality of energy ranges; determining whether measured values in the respective energy ranges are beyond thresholds; determining energy ranges where all the measured values are beyond the thresholds; analyzing a type of an element from the determined energy ranges; and detecting a location of the analyzed type of the element in the subject body on the basis of the reference point, the respective measurement points, a relative position relative to a surface of the subject body, and the directions.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: March 25, 2014
    Assignee: IHI Corporation
    Inventors: Hiroyuki Nose, Hajime Kuwabara, Tetsuya Kobayashi
  • Patent number: 8648536
    Abstract: A pair of coaxial electrodes 10 that face each other, a discharge-environment-maintaining device 20, and a voltage-applying device 30 are provided. Each coaxial electrode 10 includes a center electrode 12, a guide electrode 14 which surrounds the front end portion of the facing center electrode, and an insulation member 16 which insulates the center electrode and the guide electrode from each other. The insulation member 16 is formed of partially porous ceramics including an insulative dense portion 16a and a porous portion 16b. The insulative dense portion 16a includes a reservoir 18 which holds a plasma medium therein, and by the porous portion 16b, the inner surface of the reservoir 18 communicates with a gap between the center electrode 12 and the guide electrode 14 through the inside of the insulative dense portion 16a.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: February 11, 2014
    Assignee: IHI Corporation
    Inventor: Hajime Kuwabara
  • Publication number: 20130277202
    Abstract: A method for manufacturing ozone ice that is improved for its storage stability is provided. In the method, ice 11 including oxygen gas g2 as gas bubbles b is produced and the produced ice 11 is irradiated with ultraviolet radiation, then the oxygen gas g2 in the ice 11 is ozonized to manufacture ozone ice 1.
    Type: Application
    Filed: June 21, 2013
    Publication date: October 24, 2013
    Applicant: IHI CORPORATION
    Inventors: Junichi Okuyama, Yasunori Hamano, Takahiro Matsuo, Yuka Yoshida, Hajime Kuwabara, Nobuhiko Kubota, Kazuo Uematsu, Kouichiro Wazumi
  • Patent number: 8535489
    Abstract: A method for manufacturing ozone ice that is improved for its storage stability is provided. In the method, ice 11 including oxygen gas g2 as gas bubbles b is produced and the produced ice 11 is irradiated with ultraviolet radiation, then the oxygen gas g2 in the ice 11 is ozonized to manufacture ozone ice 1.
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: September 17, 2013
    Assignee: IHI Corporation
    Inventors: Junichi Okuyama, Yasunori Hamano, Takahiro Matsuo, Yuka Yoshida, Hajime Kuwabara, Nobuhiko Kubota, Kazuo Uematsu, Kouichiro Wazumi
  • Publication number: 20120199746
    Abstract: A method of non-destructive inspection of a subject body including an element is comprised of irradiating the subject body with a neutron ray through a first measurement point and a second measurement point; measuring an elapsed time after a first time point when a resonant neutron specific to the element passes through the first measurement point and before a second time point when a prompt gamma ray made emitted by the resonant neutron from the subject body is detected at the second measurement point; and determining a location of the element in the subject body by the first measurement point, the second measurement point, a relative position toward a surface of the subject body, and the elapsed time.
    Type: Application
    Filed: October 13, 2010
    Publication date: August 9, 2012
    Applicant: IHI Corporation
    Inventors: Hiroyuki Nose, Hajime Kuwabara, Tetsuya Kobayashi
  • Publication number: 20120199754
    Abstract: A method of non-destructive inspection of a subject body including one or more elements comprises irradiating the subject body with a neutron ray along an axis line passing through a reference point; synchronously detecting gamma rays from directions inclined at equal angles to the axis line at a plurality of measurement points disposed to have equivalent intervals radially from the axis line, respectively; measuring the detected gamma rays in a plurality of energy ranges; determining whether measured values in the respective energy ranges are beyond thresholds; determining energy ranges where all the measured values are beyond the thresholds; analyzing a type of an element from the determined energy ranges; and detecting a location of the analyzed type of the element in the subject body on the basis of the reference point, the respective measurement points, a relative position relative to a surface of the subject body, and the directions.
    Type: Application
    Filed: October 8, 2010
    Publication date: August 9, 2012
    Applicant: IHI Corporation
    Inventors: Hiroyuki Nose, Hajime Kuwabara, Tetsuya Kobayashi
  • Publication number: 20120161631
    Abstract: A plasma light source system includes a plurality of plasma light source 10 that periodically emits plasma light 8 from respective predetermined light emitting points 1a and a light collecting device 40 that collects the plasma light emitted from the plurality of light emitting points of the plasma light sources to a single light collecting point 9.
    Type: Application
    Filed: August 25, 2010
    Publication date: June 28, 2012
    Applicant: IHI CORPORATION
    Inventor: Hajime Kuwabara
  • Publication number: 20120146511
    Abstract: A pair of coaxial electrodes 10 that face each other, a discharge-environment-maintaining device 20, and a voltage-applying device 30 are provided. Each coaxial electrode 10 includes a center electrode 12, a guide electrode 14 which surrounds the front end portion of the facing center electrode, and an insulation member 16 which insulates the center electrode and the guide electrode from each other. The insulation member 16 is formed of partially porous ceramics including an insulative dense portion 16a and a porous portion 16b. The insulative dense portion 16a includes a reservoir 18 which holds a plasma medium therein, and by the porous portion 16b, the inner surface of the reservoir 18 communicates with a gap between the center electrode 12 and the guide electrode 14 through the inside of the insulative dense portion 16a.
    Type: Application
    Filed: August 31, 2010
    Publication date: June 14, 2012
    Applicant: IHI CORPORATION
    Inventor: Hajime Kuwabara
  • Publication number: 20120145930
    Abstract: An LPP EUV light source includes a vacuum chamber 12 that is maintained in a vacuum environment; a gas jet device 14 that forms a hypersonic steady gas jet 1 of the target substance inside the vacuum chamber so as to be collected; and a laser device 16 that collects and radiates a laser beam 3 to the hypersonic steady gas jet, wherein plasma is produced by exciting the target substance at the light collecting point 2 of the laser beam and EUV light 4 is emitted therefrom.
    Type: Application
    Filed: August 27, 2010
    Publication date: June 14, 2012
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, IHI CORPORATION
    Inventors: Hajime Kuwabara, Kazuhiko Horioka
  • Publication number: 20110248635
    Abstract: A plasma light source includes a pair of coaxial electrodes 10 facing each other, a radiation environment sustaining device 20 that supplies a plasma medium into the insides of the coaxial electrodes and holds the coaxial electrodes at a temperature and a pressure suitable for plasma generation, and a voltage application device 30 that applies a discharge voltage of an inverted polarity to each of the coaxial electrodes. Tubular discharge 4 is formed between the pair of coaxial electrodes and plasma 3 is confined in an axial direction of the coaxial electrodes.
    Type: Application
    Filed: December 4, 2009
    Publication date: October 13, 2011
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, IHI CORPORATION
    Inventors: Hajime Kuwabara, Kazuhiko Horioka
  • Publication number: 20110198209
    Abstract: A method for manufacturing ozone ice that is improved for its storage stability is provided. In the method, ice 11 including oxygen gas g2 as gas bubbles b is produced and the produced ice 11 is irradiated with ultraviolet radiation, then the oxygen gas g2 in the ice 11 is ozonized to manufacture ozone ice 1.
    Type: Application
    Filed: October 23, 2009
    Publication date: August 18, 2011
    Applicant: IHI Corporation
    Inventors: Junichi Okuyama, Yasunori Hamano, Takahiro Matsuo, Yuka Yoshida, Hajime Kuwabara, Nobuhiko Kubota, Kazuo Uematsu, Kouichiro Wazumi
  • Patent number: 6900434
    Abstract: A hollow exciting current pathway in the form of a conductor is arranged outside of an ion deflection casing with a curved contour and having an inlet and an outlet. The conductor is composed of a widthwise spiral formation of conductors running through the inlet and outlet and along the curved contour with a result that a magnetic field which is uniform widthwise is formed in the ion deflection casing. An ion beam is introduced through between the conductors at the inlet into the hollow exciting current pathway. By the action of the magnetic field through the hollow exciting current pathway, the ion beam is bent depending upon mass of ions. The ion beam with desired mass is taken out through between the conductors at the outlet with a result that an ion beam greater in size can be ion mass separated uniformly.
    Type: Grant
    Filed: December 27, 2001
    Date of Patent: May 31, 2005
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventor: Hajime Kuwabara
  • Publication number: 20040113069
    Abstract: A hollow exciting current pathway in the form of conductor means is arranged outside of an ion deflection casing with a curved contour and having an inlet and an outlet. The conductor means is composed of a widthwise spiral formation of conductors running through the inlet and outlet and along the curved contour with a result that a magnetic field which is uniform widthwise is formed in the ion deflection casing. An ion beam is introduced through between the conductors at the inlet into the hollow exciting current pathway. By the action of the magnetic field through the hollow exciting current pathway, the ion beam is bent depending upon mass of ions; the ion beam with desired mass is taken out through between the conductors at the outlet with a result that the ion beam greater in size can be ion mass separated uniformly.
    Type: Application
    Filed: January 29, 2004
    Publication date: June 17, 2004
    Inventor: Hajime Kuwabara