Patents by Inventor Koudai MAE

Koudai MAE 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).

  • Subsurface soil purification method
    Patent number: 11084075
    Abstract: A subsurface soil purification method includes a first process of injecting a cleaning liquid, that separates a contaminant in subsurface soil from the subsurface soil and that has been warmed to a higher temperature than a groundwater temperature, into an injection well provided in the ground, and a second process of pumping up groundwater containing the cleaning liquid, in which the contaminant separated from the subsurface soil has been dissolved, from a pumping well that is provided in the ground so as to be spaced apart from the injection well.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: August 10, 2021
    Assignees: TAKENAKA CORPORATION, TAKENAKA CIVIL ENGINEERING & CONSTRUCTION CO., LTD.
    Inventors: Yuji Yamazaki, Takaaki Shimizu, Nobuyasu Okuda, Yasuhide Furukawa, Tomohiro Nakashima, Haruka Kiyotomo, Kazuhiro Mukai, Kaoru Inaba, Koudai Mae, Masafumi Funakawa, Ai Hasegawa, Keisuke Omura, Kota Tanabe
  • SUBSURFACE SOIL PURIFICATION METHOD
    Publication number: 20190193129
    Abstract: A subsurface soil purification method includes a first process of injecting a cleaning liquid, that separates a contaminant in subsurface soil from the subsurface soil and that has been warmed to a higher temperature than a groundwater temperature, into an injection well provided in the ground, and a second process of pumping up groundwater containing the cleaning liquid, in which the contaminant separated from the subsurface soil has been dissolved, from a pumping well that is provided in the ground so as to be spaced apart from the injection well.
    Type: Application
    Filed: August 29, 2017
    Publication date: June 27, 2019
    Inventors: Yuji YAMAZAKI, Takaaki SHIMIZU, Nobuyasu OKUDA, Yasuhide FURUKAWA, Tomohiro NAKASHIMA, Haruka KIYOTOMO, Kazuhiro MUKAI, Kaoru INABA, Koudai MAE, Masafumi FUNAKAWA, Ai HASEGAWA, Keisuke OMURA, Kota TANABE