Challenge and renovation
Our History

  • 1956
    Launched an external personal radiation monitoring service with “film badges” in the Technical Division of Chiyoda Roentgen (currently Fujifilm Medical Co., Ltd.) (May)
  • 1958
    • Founded Chiyoda Appliance to manufacture and sell various radiation protective equipment for the prevention of radiation damage, and to maintain the film badge business (June).
    • Established a representative office (currently Ibaraki Office) in Tokai-mura (September)
  • 1967
    Established "Film Badge Center" in Nihonbashi (Edobashi), Chuo-ku, Tokyo and started external personal dose measuring service using "fluorescent glass dosemeters" (January)
  • 1972
    Oarai Reserch LaboratoryEstablished "Oarai Research Laboratory" in Oarai, Ibaraki
    Installed X-ray generators and Co-60 irradiators, and started operation of the standard radiation dose measurement/irradiation system (June)
  • 1979
    Completed the "Film Badge Full Automatic System (FAS)" that fully automates film development, concentration determination, dose assessment, form output, etc. in the film badge measurement operation (June)
  • 1985
    Enhanced various irradiation facilities for standard irradiation in the Oarai Research Laboratory and constructed new "Research Building" (May)
  • 1989
    • Established the Medical Equipment Supply Department for expansion of business into the medical device industry (April)
    • Concluded a general domestic agency contract on the after-loading radiotherapy device "microSelectron HDR" with Nucletron B.V. (the Netherlands) and started sales (April)
    • Established the "Monitoring Service System (MOS)" on the basis of the revision of laws related to radiation protection and started operation (April)
  • 1995
    Oarai Research Laboratory certified by the Japan Calibration Service System (business division: radiation) (December)
  • 1996
    Renamed as Chiyoda Technol Corporation (April)
  • 1999
    Concluded a sales contract on radioisotopes and equipment with AEA Technology Plc (currently QSA Global Inc. [USA] etc.), and started sales (April)
  • 2000
    • Concluded a written agreement on the manufacturing and distribution of radioisotopes with the Japan Atomic Energy Research Institute (currently Japan Atomic Energy Agency) (March)

    Mr.Takahashi and HosodaLeft, Mr. Takahashi, Vice President of the Japan Atomic Energy Research Institute (currently Japan Atomic Energy Agency); Right, Hosoda, President of Chiyoda Technol Corporation (April 1, 2000)

    • Started manufacturing and sales of radioisotopes (April)
    • Established Technol Dose Center in Oarai, Ibaraki to specialize in personal dose measurement service (April)
    • Radiation Monitoring CenterCompleted "Radiation Monitoring Center," which is a measuring facility using new-type glass dosemeters, in Oarai, Ibaraki (July)
    • glass dosimetersStarted measuring service using new glass dosemeters (October)
  • 2001
    Relocated work environment measuring facilities from Tokyo to Oarai (July)
  • 2003
    • Concluded a general domestic agency contract on the mobile intraoperative irradiator "MOBETRON" with Intra Op Medical Corporation (USA) and started sales (January)
    • Purchased 15,310 land from the Japan Atomic Energy Agency and Oarai (February)
  • 2004
    • Concluded a general domestic agency contract on the head and neck stereotactic radiotherapy device "Cyber Knife II" with Accuray Incorporated (USA) (January), which was later changed to a domestic distributor contract in October 2009
    • Accomplished assembly/shipment of 10 million glass badges (February)
    • Accomplished dose determination of 10 million glass badges (August)
    • Concluded a general domestic agency contract on QA products for radiotherapy with Standard Imaging Inc. (USA) (October)
  • 2005
    Held a ceremony for the 5th anniversary of the Radiation Monitoring Center (July)
  • 2006
    • Concluded a sales contract on the "Glass Dosemeter Monitoring Service System" with the Institut de radioprotection et de sûreté nucléaire (IRSN), France (July)
    • Transferred personal dose measuring service from Technol Dose Center to Chiyoda Technol (July)
    • Accomplished assembly/shipment of 20 million glass badges (December)
  • 2007
    Accomplished dose determination of 20 million glass badges (October)
  • 2008
    • Treatment area of Accuray's stereotactic radiotherapy device "Cyber Knife II" expanded from the head and neck to the trunk (whole body) (with pharmaceutical approval) (June)
    • Started using a new system of customer information management for personal monitoring service (September)
  • 2009
    • Concluded a sales agency contract on glass dosemeters with the China Institute of Atomic Energy (March)
    • Accomplished assembly/shipment of 30 million glass badges (September)
  • 2010
    Accomplished dose determination of 30 million glass badges (September)
  • 2012
    Accomplished assembly/shipment of 40 million glass badges (April)
  • 2013
    • Oarai Onukidai FacilityCompleted "Oarai Onukidai Facility," which is a measuring facility using next-generation "glass dosemeters" (July)
    • glass badgesStarted measurement service using next-generation glass dosemeters (December)
  • 2016
    Concluded an import and sales agreement with JSC Isotope (Russia) for isotope produced in Russia (February)
  • 2017
    • Signed a Memorandum of Understanding for research cooperation on radiation safety utilization technology with the Institute of Nuclear Physics of the Republic of Kazakhstan (March)
    • Launched measurement service with eye lens dosemeter “DOSIRIS®” (October)
    • Constructed the “Radiation Monitoring Center Aomori” to improve radiation measurement service in the Tohoku region using new glass dosemeters (October).
  • 2018
    Started radiation measurement services at the “Radiation Monitoring Center Aomori” (April).
  • 2020
    • The function of "Monitoring Service System (MOS)" has been substantially strengthened (January)
    • "Exhibition building for nuclear disaster prevention machinery" has been built at Onukidai office, Oarai-machi, Ibaraki prefecture (June)


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