Patents Assigned to Japan Atomic Energy Agency
  • Publication number: 20220034327
    Abstract: Provided is a vacuum component capable of evacuation by a getting effect, which has a large maximum number of captured molecules and a long working life. It is provided, in an area around its central axis, with a hollow cylindrical electrode 20 having an electrode surface 20A that is sufficiently smaller than an inner surface 10A of the vacuum container 10, along the central axis. In the vacuum container 10, it is possible to realize any one of states among a first state of generating DC discharge by introducing Ar into the inside and setting the electrode surface 20A at a positive potential, a second state of setting the electrode surface 20A at a ground potential without introducing Ar, and a third state of generating DC discharge by introducing Ar into the inside and setting the electrode surface 20A at a negative potential. Evacuation by the vacuum component 1 is performed in the second state.
    Type: Application
    Filed: July 28, 2021
    Publication date: February 3, 2022
    Applicant: JAPAN ATOMIC ENERGY AGENCY
    Inventor: Junichiro KAMIYA
  • Patent number: 11051390
    Abstract: To provide a functional membrane for ion beam transmission capable of enhancing ion beam transmittance and improving beam emittance. A functional membrane for ion beam transmission according to the present invention is used in a beam line device through which an ion beam traveling in one direction passes and has a channel. The axis of the channel is substantially parallel to the travel direction of the ion beam.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: June 29, 2021
    Assignees: Japan Atomic Energy Agency, PESCO Co., Ltd.
    Inventors: Natsuko Fujita, Akihiro Matsubara
  • Publication number: 20200215513
    Abstract: A carbonate apatite highly containing carbonate groups, having excellent heavy metal adsorption capacity is provided. The carbonate apatite contains not less than 15.6% by weight carbonate groups, preferably contains at least one of copper (Cu), zinc (Zn), strontium (Sr), magnesium (Mg), potassium (K), iron (Fe), and sodium (Na), and preferably has a Ca/P molar ratio of not less than 1.5.
    Type: Application
    Filed: December 31, 2019
    Publication date: July 9, 2020
    Applicant: JAPAN ATOMIC ENERGY AGENCY
    Inventors: Yurina SEKINE, Takuya NANKAWA, Naofumi KOZAI
  • Publication number: 20200216318
    Abstract: An efficient method of producing a carbonate apatite is provided. The method comprises: a first step of calcining animal bone; and a second step of reacting a bone calcined product obtained in the first step with a basic carbonate compound.
    Type: Application
    Filed: January 2, 2020
    Publication date: July 9, 2020
    Applicant: JAPAN ATOMIC ENERGY AGENCY
    Inventors: Yurina SEKINE, Takuya NANKAWA, Naofumi KOZAI
  • Patent number: 10652488
    Abstract: An optical-detection element includes a p-type supporting-layer, an n-type buried charge-generation region to implement a photodiode with the supporting-layer, a p-type shield region buried in the buried charge-generation region, a gate insulating-film contacted with the shield region, a transparent electrode on the gate insulating-film, a p-type well region buried in the supporting-layer, and an n+-type charge-readout region buried in the supporting-layer at an edge of the well region toward the buried charge-generation region.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: May 12, 2020
    Assignees: BROOKMAN TECHNOLOGY, INC., IKEGAMI TSUSHINKI CO., LTD., JAPAN ATOMIC ENERGY AGENCY
    Inventors: Takashi Watanabe, Osamu Ozawa, Kunihiko Tsuchiya, Tomoaki Takeuchi
  • Publication number: 20200102625
    Abstract: A process of producing a fine-grained austenitic stainless steel, said process comprising a step of subjecting a fine-grained austenitic stainless steel comprising: C: 0.15 wt % or less, Si: 1.00 wt % or less, Mn: 2.0 wt % or less, Ni: 6.0 to 14.0 wt %, Cr: 16.0 to 22.0 wt %, and Mo: 3.0 wt % or less, with the balance being Fe and inevitable impurities, and having an average grain size of 10 ?m or lower, to an annealing treatment at a temperature from 600° C. to 700° C. for 48 hours or longer.
    Type: Application
    Filed: September 23, 2019
    Publication date: April 2, 2020
    Applicant: JAPAN ATOMIC ENERGY AGENCY
    Inventors: Noriaki HIROTA, Tomoaki TAKEUCHI, Hiroko NAKANO, Atsushi KIKUCHI
  • Publication number: 20200029417
    Abstract: To provide a functional membrane for ion beam transmission capable of enhancing ion beam transmittance and improving beam emittance. A functional membrane for ion beam transmission according to the present invention is used in a beam line device through which an ion beam traveling in one direction passes and has a channel. The axis of the channel is substantially parallel to the travel direction of the ion beam.
    Type: Application
    Filed: March 9, 2018
    Publication date: January 23, 2020
    Applicants: Japan Atomic Energy Agency, PESCO Co., Ltd.
    Inventors: Natsuko Fujita, Akihiro Matsubara
  • Patent number: 10494329
    Abstract: In synthesis of a compound represented by the General Formula (1) or a salt thereof, nitrilotriacetic acid as its raw material is reacted with a dehydrating agent to allow dehydration, and the resulting nitrilotriacetic acid anhydride is reacted with a dialkylamine to obtain a reaction intermediate product. The reaction intermediate product is then similarly reacted with a dehydrating agent to allow dehydration, and the resulting reaction intermediate anhydride is reacted with a dialkylamine to synthesize a tetraalkylnitriloacetic acid diacetamide compound. In Formula (1), R1, R2, R3 and R4 independently represent the same or different hydrocarbon group, with the proviso that the total number of carbon atoms in the hydrocarbon groups R1, R2, R3, and R4 is 8 to 64.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: December 3, 2019
    Assignee: JAPAN ATOMIC ENERGY AGENCY
    Inventors: Kojiro Shimojo, Hirochika Naganawa
  • Publication number: 20190333653
    Abstract: A radiation shielding material that is lighter and has lower installation restrictions than conventional methods, and that exhibits excellent shielding efficiency against radiation in the high energy region. The radiation shielding material comprises a complex containing a fibrous nanocarbon material, a primary radiation shielding particle, and a binder, wherein the fibrous nanocarbon material and the primary radiation shielding particle are dispersed in the binder.
    Type: Application
    Filed: August 9, 2018
    Publication date: October 31, 2019
    Applicants: SUN-TECH LIMITED, JAPAN ATOMIC ENERGY AGENCY
    Inventors: Oji KOIZUMI, Shogo NASU, Junichiro KAMIYA
  • Publication number: 20190092718
    Abstract: In synthesis of a compound represented by the General Formula (1) or a salt thereof, nitrilotriacetic acid as its raw material is reacted with a dehydrating agent to allow dehydration, and the resulting nitrilotriacetic acid anhydride is reacted with a dialkylamine to obtain a reaction intermediate product. The reaction intermediate product is then similarly reacted with a dehydrating agent to allow dehydration, and the resulting reaction intermediate anhydride is reacted with a dialkylamine to synthesize a tetraalkylnitriloacetic acid diacetamide compound. In Formula (1), R1, R2, R3 and R4 independently represent the same or different hydrocarbon group, with the proviso that the total number of carbon atoms in the hydrocarbon groups R1, R2, R3, and R4 is 8 to 64.
    Type: Application
    Filed: September 14, 2018
    Publication date: March 28, 2019
    Applicant: JAPAN ATOMIC ENERGY AGENCY
    Inventors: Kojiro SHIMOJO, Hirochika NAGANAWA
  • Publication number: 20180302581
    Abstract: An optical-detection element includes a p-type supporting-layer, an n-type buried charge-generation region to implement a photodiode with the supporting-layer, a p-type shield region buried in the buried charge-generation region, a gate insulating-film contacted with the shield region, a transparent electrode on the gate insulating-film, a p-type well region buried in the supporting-layer, and an n+-type charge-readout region buried in the supporting-layer at an edge of the well region toward the buried charge-generation region.
    Type: Application
    Filed: March 30, 2018
    Publication date: October 18, 2018
    Applicants: BROOKMAN TECHNOLOGY, INC., IKEGAMI TSUSHINKI CO., LTD., JAPAN ATOMIC ENERGY AGENCY
    Inventors: Takashi Watanabe, Osamu Ozawa, Kunihiko Tsuchiya, Tomoaki Takeuchi
  • Patent number: 9923006
    Abstract: A radiation tolerant optical detection element includes: a p-type base-body region; a gate insulating film provided on an upper surface of the base-body region; an n-type buried charge-generation region buried in an upper portion of the base-body region; an n-type charge-readout region buried in an upper portion of the base-body region on the inner-contour side of the buried charge-generation region; an n-type reset-drain region buried on the inner-contour side of the charge-readout region; a transparent electrode provided on the gate insulating film above the buried charge-generation region; and a reset-gate electrode provided on a portion of the gate insulating film between the charge-readout region and the reset-drain region.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: March 20, 2018
    Assignees: BROOKMAN TECHNOLOGY, INC., IKEGAMI TSUSHINKI CO., LTD., JAPAN ATOMIC ENERGY AGENCY
    Inventors: Takashi Watanabe, Tomohiro Kamiyanagi, Kunihiko Tsuchiya, Tomoaki Takeuchi
  • Patent number: 9884989
    Abstract: To provide Zinc Sulfide activated with Silver (ZnS:Ag) based fluorescent material for detecting particle beams, having lower gamma-ray sensitivity and providing lower afterglow, and being specialized for the purpose of detecting particle beams, and its manufacturing method. Zinc Sulfide activated with Silver (ZnS:Ag) based fluorescent material for detecting particle beams emits fluorescence with wavelengths from 320 nm to 580 nm in response to alpha-ray irradiation, and has a fluorescence spectrum with a peak wavelength from 395 nm to 410 nm.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: February 6, 2018
    Assignee: Japan Atomic Energy Agency
    Inventors: Tatsuya Nakamura, Masaki Katagiri, Yasunobu Noguchi, Hirofumi Ooguri
  • Publication number: 20170133419
    Abstract: A radiation tolerant optical detection element includes: a p-type base-body region; a gate insulating film provided on an upper surface of the base-body region; an n-type buried charge-generation region buried in an upper portion of the base-body region; an n-type charge-readout region buried in an upper portion of the base-body region on the inner-contour side of the buried charge-generation region; an n-type reset-drain region buried on the inner-contour side of the charge-readout region; a transparent electrode provided on the gate insulating film above the buried charge-generation region; and a reset-gate electrode provided on a portion of the gate insulating film between the charge-readout region and the reset-drain region.
    Type: Application
    Filed: January 23, 2017
    Publication date: May 11, 2017
    Applicants: BROOKMAN TECHNOLOGY, INC., IKEGAMI TSUSHINKI CO., LTD., JAPAN ATOMIC ENERGY AGENCY
    Inventors: Takashi WATANABE, Tomohiro KAMIYANAGI, Kunihiko TSUCHIYA, Tomoaki TAKEUCHI
  • Patent number: 9640213
    Abstract: A perpendicular magnetic recording medium includes a perpendicular magnetic layer provided above a nonmagnetic substrate, and a protection layer provided on the perpendicular magnetic layer. The perpendicular magnetic layer has an hcp structure, and includes stacked layers having a (0002) crystal plane oriented parallel to a surface of the nonmagnetic substrate. An uppermost layer amongst the stacked layers includes polycrystal grains selected from a CoCr-base alloy, a CoPt-base alloy, a CoCrPt-base alloy, and a CoPtCr-base alloy. The protection layer makes contact with the uppermost layer of the perpendicular magnetic layer, and includes a single graphene layer or a graphene stack, and an amorphous carbon layer. The single graphene layer or the graphene stack is bonded in parallel to a (0002) crystal plane of the polycrystal grains.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: May 2, 2017
    Assignees: SHOWA DENKO K.K., JAPAN ATOMIC ENERGY AGENCY
    Inventors: Kota Hasegawa, Takahiro Ukai, Eishin Yamakawa, Shiro Entani, Seiji Sakai
  • Patent number: 9625586
    Abstract: [Problem] To provide a scintillator plate capable of improving the accuracy of radiation detection, and expanding the surface area for practical use while suppressing manufacturing costs, and also provide a radiation measuring apparatus, a radiation imaging apparatus, and a scintillator plate manufacturing method. [Solution] A scintillator plate (1) includes a scintillator (2) that generates scintillation light when excited by incident radiation. The scintillator plate (1) includes a scintillator layer (22) covered with scintillator powder (21) having an average particle diameter equal to or greater than the range of the radiation within the scintillator (2) when the radiation to be measured is either alpha rays, electron beams, or ion beams.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: April 18, 2017
    Assignee: JAPAN ATOMIC ENERGY AGENCY
    Inventors: Junichi Kaneko, Mikio Higuchi, Takehiro Shimaoka, Youichi Tsubota, Kenji Izaki
  • Publication number: 20160201163
    Abstract: Problem is to selectively and inexpensively recover a metal ion in a liquid. Solution is a metal ion recovery device, in which a permselective membrane for selectively permeating Li is used, and on both main faces of the plate-like permselective membrane, a mesh-like negative electrode and a positive electrode are formed, respectively. This structure is provided in a treatment tank, and in the treatment tank, the permselective membrane partitions between a stock solution containing a Li ion, and a recovery solution into which Li is recovered. As the permselective membrane, lithium nitride (Li3N), Li10GeP2S12, (Lax, Liy) TiOz, Li1+x+yAlx (Ti, Ge)2?xSiyP3?yO12, and the like, which are super lithium ion conductors, can be used.
    Type: Application
    Filed: August 7, 2014
    Publication date: July 14, 2016
    Applicant: JAPAN ATOMIC ENERGY AGENCY
    Inventor: Tsuyoshi HOSHINO
  • Patent number: 9382367
    Abstract: Provision of, and a method for production of, a polymer electrolyte membrane, which is characterized by introducing a vinyl monomer into an aromatic polymer membrane substrate, typified by polyether ether ketone, polyether imide, or polysulfone, as graft chains by graft polymerization, and then chemically converting some of the graft chains or/and part of the aromatic polymer chain into sulfonic groups.
    Type: Grant
    Filed: August 24, 2007
    Date of Patent: July 5, 2016
    Assignee: JAPAN ATOMIC ENERGY AGENCY
    Inventors: Yasunari Maekawa, Shin Hasegawa, Yasuyuki Suzuki
  • Patent number: 9379402
    Abstract: An anion conducting electrolyte membrane with high performance where the electric conductivity and the water uptake are balanced, and a method of manufacturing the same are disclosed. The anion conducting electrolyte membrane comprises: a polymeric material which consists of fluorine polymer, olefinic polymer, or aromatic polymer; weak base quaternary salt obtained by the reaction of grafts introduced by graft polymerizing vinyl monomer which contains halogenated alkyl groups using radiation and strong organic bases.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: June 28, 2016
    Assignees: Japan Atomic Energy Agency, Daihatsu Motor Co., Ltd.
    Inventors: Kimio Yoshimura, Hiroshi Koshikawa, Tetsuya Yamaki, Masaharu Asano, Yasunari Maekawa, Hideyuki Shishitani, Hirohisa Tanaka, Susumu Yamaguchi, Koichiro Asazawa, Kazuya Yamamoto, Fumihiro Sanpei
  • Patent number: 9268045
    Abstract: A neutron detector with a unique neutron detecting element is disclosed. The neutron detecting element has an inner cylindrical neutron scintillator where a neutron detection body including a ZnS phosphor, and a neutron converter material which contains 6Li or 10B is arranged outside of the cylindrical substrate; a scintillator fluorescence detection body made by placing coiled wavelength shift fibers where two wavelength shift fibers are wound in parallel along the cylindrical substrate on said inner cylindrical neutron scintillator; and an outer cylindrical neutron scintillator where a neutron detection body is arranged inside of the cylindrical substrate, the outer cylindrical neutron scintillator being arranged on the scintillator fluorescence detection body. The fluorescence signals converted into pulse signals by two optical detectors are led to a coincidence circuit, and when two fluorescence signals are measured simultaneously during the predetermined period of time, a neutron signal is output.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: February 23, 2016
    Assignees: Japan Atomic Energy Agency, Chichibu Fuji Co., Ltd.
    Inventors: Tatsuya Nakamura, Noriaki Tsutsui, Atsushi Sakaue, Masaki Katagiri