Patents by Inventor Yuichi TACHIWADA

Yuichi TACHIWADA 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).

  • Artificial ground freezing method and artificial ground freezing system
    Patent number: 10221537
    Abstract: The purpose of the present invention is to provide an artificial ground freezing method having good coolant thermal efficiency without a gas-phase coolant being released into the ground or into the air.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: March 5, 2019
    Assignee: CHEMICAL GROUTING CO., LTD.
    Inventors: Yuichi Tachiwada, Tsutomu Tsuchiya, Takeru Ariizumi, Hiroshi Soma
  • ARTIFICIAL GROUND FREEZING METHOD AND ARTIFICIAL GROUND FREEZING SYSTEM
    Publication number: 20170350087
    Abstract: The purpose of the present invention is to provide an artificial ground freezing method having good coolant thermal efficiency without a gas-phase coolant being released into the ground or into the air.
    Type: Application
    Filed: April 22, 2015
    Publication date: December 7, 2017
    Applicant: CHEMICAL GROUTING CO., LTD.
    Inventors: Yuichi TACHIWADA, Tsutomu TSUCHIYA, Takeru ARIIZUMI, Hiroshi SOMA