Patents Assigned to Raita Kogyo Co. Ltd.
  • Apparatus for soil purification and remediation method for contaminated soil
    Patent number: 6250846
    Abstract: An apparatus for soil remediation to remedy a soil contaminated with a pollutant less affecting the environment, which includes a soil borer having a rotatable drilling form or portion capable of agitating the soil, introducing into the soil at least one agent selected from the group consisting of a microorganism capable of degrading the pollutant, a nutrient for the microorganism and an inducer to make the microorganism express the pollutant-degrading activity, and measuring pollutant concentration in the soil.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: June 26, 2001
    Assignees: Canon Kabushiki Kaisha, Raita Kogyo Co. Ltd.
    Inventors: Yuji Kawabata, Masatoshi Iio, Yuri Senshu, Takeshi Handa