Patents by Inventor Junji Igawa

Junji Igawa 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).

  • Remediation agent for contaminated soil and method for the remediation of soil
    Patent number: 6596190
    Abstract: A method for the remediation of contaminated soil directly and effectively removes the contaminants such as organic halides from the contaminated soil, using remediation agents for soil. In more detail, the agents include a slurry of fine iron particles in which the fine iron particles having average particle size less than 10 &mgr;m are dispersed in water; and an aqueous suspended liquid that contains fine iron particles having average particle size less of 1 to 200 &mgr;m and a hydrophilic binder; and these agents are employable for the method for the remediation of contaminated soil.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: July 22, 2003
    Assignees: Hazama Corp., Toyo Ink Mfg.
    Inventors: Junji Igawa, Yasunori Kimura, Terunobu Maeda