Patents by Inventor Yoshie OTAKE

Yoshie OTAKE 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: 11841335
    Abstract: A nondestructive inspection apparatus makes a neutron beam incident on an inspection target, detects a specific gamma ray deriving from a target component in the inspection target, among gamma rays generated by the neutron beam, and determines a depth at which the target component exists, based on a result of the detecting. The nondestructive inspection apparatus includes a neutron source that emits a neutron beam to a surface of the inspection target, a gamma ray detection device that detects, as detection intensities, intensities of a plurality of types of specific gamma rays whose energy differs from each other, and a ratio calculation unit that determines a ratio between the detection intensities of a plurality of types of the specific gamma rays.
    Type: Grant
    Filed: October 9, 2020
    Date of Patent: December 12, 2023
    Assignee: RIKEN
    Inventors: Yasuo Wakabayashi, Yoshie Otake, Yujiro Ikeda
  • Publication number: 20230393082
    Abstract: A nondestructive inspecting device (10) includes a neutron emission device (2) that emits a neutron beam to a local irradiation location on a surface (la) of an inspection target (1), a detection device (3) that detects, at each of inspection positions facing the surface (la), scattered neutrons returned from the inspection target (1) as a result of emission of the neutron beam to the irradiation location, and measures the detected number of the scattered neutrons at each of the detection positions, and a ratio calculation unit (5) that calculates, for each of the detection positions, a ratio of the detected number at the detection position to a reference value for the detection position, and outputs the ratios. The reference value is set as the detected number at each of the detection positions in an assumed case of no defects existing in the inspection target (1).
    Type: Application
    Filed: October 15, 2021
    Publication date: December 7, 2023
    Applicant: RIKEN
    Inventors: Kunihiro FUJITA, Chihiro IWAMOTO, Takaoki TAKANASHI, Yoshie OTAKE
  • Patent number: 11754516
    Abstract: A neutron emission unit is configured to emit neutrons such that a center axis (Nh) of a neutron emission intersects a center axis direction of collimators (23a to 23e). A calculation unit is capable of generating information about an inspection object in the center axis direction of the collimators, based on position information of a neutron detector and/or position information of the neutron emission unit, information about an angle (?1) at which the center axis of the neutron emission intersects the center axis direction of the collimators, and a neutron amount detected by the neutron detector.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: September 12, 2023
    Assignees: Topcon Corporation, RIKEN
    Inventors: Hisashi Tsukada, Shigenori Nagano, Yoshie Otake, Hideyuki Sunaga, Yuichi Yoshimura, Koji Ikado
  • Patent number: 11747288
    Abstract: A non-destructive inspection system 1 includes a neutron radiation source 3 capable of emitting neutrons N, and a neutron detector 14 capable of detecting neutrons Nb produced via an inspection object 6a among neutrons N emitted from the neutron radiation source 3. The neutron radiation source 3 includes a linear accelerator 11 capable of emitting charged particles P accelerated; a first magnet section 12 including magnets 12a and 12b facing each other, the magnets 12a and 12b being capable of deflecting the charged particles P in a direction substantially perpendicular to a direction of emission of the charged particles P from the linear accelerator 11; and a target section 13 capable of producing neutrons N by being irradiated with the charged particles P that have passed through the first magnet section 12.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: September 5, 2023
    Assignees: Topcon Corporation, RIKEN
    Inventors: Shigenori Nagano, Hisashi Tsukada, Yoshie Otake, Koji Ikado, Yuichi Yoshimura, Hideyuki Sunaga
  • Publication number: 20230213462
    Abstract: A cable inspection device non-destructively inspects a cable used for supporting a bridge. The cable inspection device includes a neutron source and a neutron detection device. The neutron source emits neutrons to the cable. The neutron detection device includes a detection surface arranged outside the cable, and detects target neutrons and measures the number of the detected target neutrons when neutrons are emitted to the cable. The target neutrons are among the neutrons released from the cable and incident on the detection surface, and each have an energy equal to or lower than a predetermined value that is lower than an energy of a fast neutron.
    Type: Application
    Filed: June 18, 2021
    Publication date: July 6, 2023
    Applicant: RIKEN
    Inventors: Yoshie OTAKE, Yoshimasa IKEDA, Yuichi YOSHIMURA, Takao HASHIGUCHI, Maki MIZUTA, Hirokazu KITAGAWA, Kenta KATO
  • Publication number: 20230152250
    Abstract: A concentration detector includes: a neutron source emitting neutrons to a target; a gamma ray detector detecting and determining an amount of specific gamma rays that are among gamma rays generated in the target by interactions with the neutrons; and a concentration calculator calculating a concentration of the target at selected depths in the inspection target, based on the detected amount. A relational expression expressing a relation between a plurality of concentrations of the target in a plurality of virtual layers and a detected amount of the specific gamma rays is predetermined for each type of the specific gamma rays or each detection condition. The concentration calculator applies the detected amount for each gamma ray type or each detection condition, to the relational expression for the type or the detection condition, and calculates a concentration of the target component in the layer at each depth or the specific depth.
    Type: Application
    Filed: May 10, 2021
    Publication date: May 18, 2023
    Applicant: RIKEN
    Inventors: Yasuo WAKABAYASHI, Yoshie OTAKE, Yujiro IKEDA
  • Patent number: 11614415
    Abstract: A non-destructive inspection system includes: a neutron emission unit 12 capable of emitting neutrons pulsed; a neutron detector capable of detecting the neutrons emitted from the neutron emission unit and penetrating through an inspection object; a storage unit storing attenuation information indicating a relationship between a material of the inspection object and attenuation of the neutrons; and a calculation unit capable of calculating distance information indicating a position of a specific portion in the inspection object in accordance with time change information which is information on a change over time in an amount of the neutrons detected by the neutron detector. The calculation unit is capable of generating information related to an amount of the specific portion from information based on the amount of the neutrons according to the time change information, using the distance information and the attenuation information.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: March 28, 2023
    Assignees: Topcon Corporation, RIKEN
    Inventors: Shigenori Nagano, Satoru Ishiguro, Yoshie Otake, Hideyuki Sunaga, Yuichi Yoshimura, Koji Ikado
  • Patent number: 11609190
    Abstract: The non-destructive inspection method includes: a water absorbing or drying step of changing a water-content state of a test piece; a transmission image capturing step of irradiating, with a radiation, the test piece absorbed water or dried for a predetermined time in the water absorbing or drying step and capturing a transmission image created by visualizing the radiation transmitted through the test piece; and an evaluation step of evaluating the test piece on the basis of the water-content state of the test piece determined from the transmission image captured in the transmission image capturing step.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: March 21, 2023
    Assignees: Topcon Corporation, RIKEN
    Inventors: Yuichi Yoshimura, Maki Mizuta, Hideyuki Sunaga, Yoshie Otake
  • Patent number: 11513084
    Abstract: A non-destructive inspection system 1 includes a neutron detecting unit 4 and an arithmetic unit 60. The neutron detecting unit 4 includes a collimator 30 and a neutron detector 20 integrated together. The collimator 30 has a wall defining a through passage P. The wall is made from a material that absorbs neutrons produced via an inspection object. The neutron detector 20 is capable of detecting neutrons that have passed through the collimator 30. The arithmetic unit 60 generates information on a position and composition of the inspection object, based on information on the neutrons detected by the neutron detector 20, positional information indicating the position of the neutron detecting unit 4, and posture information indicating the posture of the neutron detecting unit 4. The positional information and the posture information are detected by a position and posture detecting unit 5.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: November 29, 2022
    Assignees: Topcon Corporation, RIKEN
    Inventors: Shigenori Nagano, Hanako Aikoh, Yoshie Otake, Yuichi Yoshimura, Hideyuki Sunaga
  • Publication number: 20220128489
    Abstract: The neutron emission unit is configured to emit neutrons such that a center axis (Nh) of neutron emission intersects a center axis direction of collimators (23a to 23e). A calculation unit is capable of generating information about an inspection object in the center axis direction of the collimators, based on position information of the neutron detector and/or position information of the neutron emission unit, information about an angle (?1) at which the center axis of the neutron emission intersects the center axis direction of the collimators, and a neutron amount detected by the neutron detector.
    Type: Application
    Filed: February 27, 2020
    Publication date: April 28, 2022
    Applicants: Topcon Corporation, RIKEN
    Inventors: Hisashi TSUKADA, Shigenori NAGANO, Yoshie OTAKE, Hideyuki SUNAGA, Yuichi YOSHIMURA, Koji IKADO
  • Patent number: 11307153
    Abstract: In order to increase reproducibility of a reconstructed tomographic image without increasing the computational load, detection is performed by oversampling in (N+n) directions during imaging for detection by N detection elements. A vector having N×(N+n) elements is obtained, and vector decimation step is performed in which a total of n×N elements corresponding to a sequence {k} 30 denoting a decimation order are removed. In a discrete Radon transform step, a corresponding discrete Radon inverse matrix WSQ?140 is operated, and in an image data generation step, de-vectoring is performed, thereby tomographic image data are acquired. When oversampling is used, a discrete Radon inverse matrix WSQ?1 is obtained. Therefore, a tomographic image is obtained by matrix computation without resorting to iterative approximation.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: April 19, 2022
    Assignees: RIKEN, Nissan Chemical Corporation
    Inventors: Takaoki Takanashi, Shigeho Noda, Masaru Tamura, Yoshie Otake
  • Publication number: 20220082514
    Abstract: A non-destructive inspection system includes: a neutron emission unit 12 capable of emitting neutrons pulsed; a neutron detector capable of detecting the neutrons emitted from the neutron emission unit and penetrating through an inspection object; a storage unit storing attenuation information indicating a relationship between a material of the inspection object and attenuation of the neutrons; and a calculation unit capable of calculating distance information indicating a position of a specific portion in the inspection object in accordance with time change information which is information on a change over time in an amount of the neutrons detected by the neutron detector. The calculation unit is capable of generating information related to an amount of the specific portion from information based on the amount of the neutrons according to the time change information, using the distance information and the attenuation information.
    Type: Application
    Filed: February 27, 2020
    Publication date: March 17, 2022
    Applicants: Topcon Corporation, RIKEN
    Inventors: Shigenori NAGANO, Satoru ISHIGURO, Yoshie OTAKE, Hideyuki SUNAGA, Yuichi YOSHIMURA, Koji IKADO
  • Publication number: 20220003690
    Abstract: A non-destructive inspection system 1 includes a neutron detecting unit 4 and an arithmetic unit 60. The neutron detecting unit 4 includes a collimator 30 and a neutron detector 20 integrated together. The collimator 30 has a wall defining a through passage P. The wall is made from a material that absorbs neutrons produced via an inspection object. The neutron detector 20 is capable of detecting neutrons that have passed through the collimator 30. The arithmetic unit 60 generates information on a position and composition of the inspection object, based on information on the neutrons detected by the neutron detector 20, positional information indicating the position of the neutron detecting unit 4, and posture information indicating the posture of the neutron detecting unit 4. The positional information and the posture information are detected by a position and posture detecting unit 5.
    Type: Application
    Filed: September 25, 2019
    Publication date: January 6, 2022
    Applicants: Topcon Corporation, RIKEN
    Inventors: Shigenori NAGANO, Hanako AIKOH, Yoshie OTAKE, Yuichi YOSHIMURA, Hideyuki SUNAGA
  • Publication number: 20210396688
    Abstract: A non-destructive inspection system 1 includes a neutron radiation source 3 capable of emitting neutrons N, and a neutron detector 14 capable of detecting neutrons Nb produced via an inspection object 6a among neutrons N emitted from the neutron radiation source 3. The neutron radiation source 3 includes a linear accelerator 11 capable of emitting charged particles P accelerated; a first magnet section 12 including magnets 12a and 12b facing each other, the magnets 12a and 12b being capable of deflecting the charged particles P in a direction substantially perpendicular to a direction of emission of the charged particles P from the linear accelerator 11; and a target section 13 capable of producing neutrons N by being irradiated with the charged particles P that have passed through the first magnet section 12.
    Type: Application
    Filed: September 25, 2019
    Publication date: December 23, 2021
    Applicants: Topcon Corporation, RIKEN
    Inventors: Shigenori NAGANO, Hisashi TSUKADA, Yoshie OTAKE, Koji IKADO, Yuichi YOSHIMURA, Hideyuki SUNAGA
  • Publication number: 20210262947
    Abstract: In order to increase reproducibility of a reconstructed tomographic image without increasing the computational load, detection is performed by oversampling in (N+n) directions during imaging for detection by N detection elements. A vector having N×(N+n) elements is obtained, and vector decimation step is performed in which a total of n×N elements corresponding to a sequence {k} 30 denoting a decimation order are removed. In a discrete Radon transform step, a corresponding discrete Radon inverse matrix WSQ?140 is operated, and in an image data generation step, de-vectoring is performed, thereby tomographic image data are acquired. When oversampling is used, a discrete Radon inverse matrix WSQ?1 is obtained. Therefore, a tomographic image is obtained by matrix computation without resorting to iterative approximation.
    Type: Application
    Filed: May 28, 2019
    Publication date: August 26, 2021
    Inventors: Takaoki TAKANASHI, Shigeho NODA, Masaru TAMURA, Yoshie OTAKE
  • Publication number: 20210168925
    Abstract: A target structure includes a target and a cooling portion. The target generates neutrons by being irradiated with a charged particle beam. The cooling portion includes a front surface and a back surface that face to sides opposite to each other. The target is joined directly or indirectly to the front surface. A flow path for flowing of cooling liquid including hydrogen elements is formed in the cooling portion. When viewed in a thickness direction of the cooling portion from the front surface to the back surface, the flow path is positioned off a center portion of the target.
    Type: Application
    Filed: August 1, 2019
    Publication date: June 3, 2021
    Applicant: RIKEN
    Inventors: Tomohiro KOBAYASHI, Yoshie OTAKE, Hideyuki SUNAGA, Xiaobo LI
  • Publication number: 20210131981
    Abstract: The non-destructive inspection method includes: a water absorbing or drying step of changing a water-content state of a test piece; a transmission image capturing step of irradiating, with a radiation, the test piece absorbed water or dried for a predetermined time in the water absorbing or drying step and capturing a transmission image created by visualizing the radiation transmitted through the test piece; and an evaluation step of evaluating the test piece on the basis of the water-content state of the test piece determined from the transmission image captured in the transmission image capturing step.
    Type: Application
    Filed: September 27, 2018
    Publication date: May 6, 2021
    Applicants: Topcon Corporation, RIKEN
    Inventors: Yuichi YOSHIMURA, Maki MIZUTA, Hideyuki SUNAGA, Yoshie OTAKE
  • Publication number: 20210033542
    Abstract: A nondestructive inspection apparatus makes a neutron beam incident on an inspection target, detects a specific gamma ray deriving from a target component in the inspection target, among gamma rays generated by the neutron beam, and determines a depth at which the target component exists, based on a result of the detecting. The nondestructive inspection apparatus includes a neutron source that emits a neutron beam to a surface of the inspection target, a gamma ray detection device that detects, as detection intensities, intensities of a plurality of types of specific gamma rays whose energy differs from each other, and a ratio calculation unit that determines a ratio between the detection intensities of a plurality of types of the specific gamma rays.
    Type: Application
    Filed: October 9, 2020
    Publication date: February 4, 2021
    Applicant: RIKEN
    Inventors: Yasuo WAKABAYASHI, Yoshie OTAKE, Yujiro IKEDA
  • Patent number: 10241061
    Abstract: A non-destructive inspection device 10 using backscattering of neutrons includes a neutron source 3 that radiates a pulse neutron beam to a surface 1a of an inspection target 1, a neutron detection device 5 that detects scattered neutrons scattered in the inspection target 1 and returned, and a measurement device 7 that measures the detection number of scattered and returned neutrons detected by the neutron detection device 5 and generates detection number data expressing the detection number with respect to time.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: March 26, 2019
    Assignee: RIKEN
    Inventors: Yoshie Otake, Yoshimasa Ikeda
  • Publication number: 20180259462
    Abstract: A non-destructive inspection device 10 using backscattering of neutrons includes a neutron source 3 that radiates a pulse neutron beam to a surface 1a of an inspection target 1, a neutron detection device 5 that detects scattered neutrons scattered in the inspection target 1 and returned, and a measurement device 7 that measures the detection number of scattered and returned neutrons detected by the neutron detection device 5 and generates detection number data expressing the detection number with respect to time.
    Type: Application
    Filed: March 2, 2018
    Publication date: September 13, 2018
    Applicant: RIKEN
    Inventors: Yoshie OTAKE, Yoshimasa IKEDA