Patents by Inventor Darakhshan Ahmad

Darakhshan Ahmad 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).

  • Method and apparatus for remediation of contaminated soil
    Patent number: 6027284
    Abstract: A method of treating a selected volume of soil comprising the steps of providing a pipe network including at least one layer of perforated fluid conduits, inserting the layer of perforated fluid conduits below the selected volume of soil, introducing a selected soil treatment fluid in the selected volume of soil via the perforated fluid conduits, and successively raising and lowering fluid level through the selected volume of soil, thereby ensuring higher extraction and removal efficiencies.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: February 22, 2000
    Assignee: McGill University
    Inventors: Shiv Om Prasher, Darakhshan Ahmad, Benjamin Ugwuegbua