Patents by Inventor Soichi Yatagi

Soichi Yatagi 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).

  • Iron particles for purifying contaminated soil or ground water
    Patent number: 7022256
    Abstract: Iron particles for purifying soil or ground water of the present invention comprise a mixed phase of ?-Fe phase and Fe3O4 phase, and having a BET specific surface area of 5 to 60 m2/g, an Fe content of not less than 75% by weight based on the weight of the iron particles and a sulfur content of not less than 1,000 ppm. The iron particles are capable of decomposing or insolubilizing harmful substances such as organohalogen compounds and/or heavy metals, cyanogen, etc. contained in the soil or ground water in efficient, continuous and economical manners.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: April 4, 2006
    Assignee: Toda Kogyo Corporation
    Inventors: Masayuki Uegami, Junichi Kawano, Tomoko Okita, Yasuhiko Fujii, Kenji Okinaka, Koji Kakuya, Soichi Yatagi