• September 25, 2000

    Established  Satoshi Nishioka takes office as President and Representative Director Headquarters is located at 2-10-51 Shimbashi, Minato-ku, Tokyo

  • December 11, 2000

    Hiroyuki Tosaka becomes Chairman of the Board

  • March 8, 2001

    Registered as a construction consultant

  • June 11, 2001

    Headquarters moved to “8th floor of 17th Mori Building”, 26-5 Toranomon, Minato-ku, Tokyo

  • July 17, 2003

    Headquarters moved to Nihonbashi Heiwa Building 3rd floor, 1-20-8 Nihonbashi, Chuo-ku, Tokyo

  • April 26, 2008

    Headquarters relocated to 2-chome, Kanda Ogawamachi, Chiyoda-ku, “Hinoki Building 6F”

  • June 2, 2012

    Headquarters relocated to 2-chome, Kanda-Awaji-cho, Chiyoda-ku “NCO Kanda-Awaji-cho, 3rd floor”

  • July 1, 2016

    Satoshi Nishioka, Representative Director and President, retires (currently a consultant), Hiroyuki Tosaka becomes President and Representative Director

  • October 1, 2018

    Hiroyuki Tosaka was appointed as Chairman of the Board and Yasuhiro Tawara was appointed as President.

Company Information

  • Corporate Message

    Message from President Yasuhiro Tahara

  • About us

    Introducing the corporate profile of Geosphere Environmental Technology Corp.

  • Vision

    We tried contributed to the realization of a safe and secure society through scientific solutions to water problems.

  • History

    Introducing the history of our company.

  • Access

    Introducing access to our company.


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