Patents by Inventor Dimitris Dermatas

Dimitris Dermatas 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 of treatment, stabilization and heave control for chromite ore processing residues (COPR) and chromium contaminated soils
    Patent number: 7452163
    Abstract: A process for stabilizing chromium in a chromite ore processing residue (COPR) comprises the steps of adding an acid to consume the excess alkalinity of the COPR, resulting in a pH of less than 10; and adding a chemical reductant to the COPR to convert any hexavalent chromium present to trivalent chromium. A source of sulfate may be added to the COPR to reduce heave potential and improve its geotechnical stability. Treated COPR may be encapsulated in a material suitable to prevent contact between the COPR and water, such as an asphalt.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: November 18, 2008
    Assignee: The Trustees of Stevens Institute of Technology
    Inventors: Mahmoud Wazne, Dimitris Dermatas, Dilhan M. Kalyon, Xiaoguang Meng, Maria Kaouris, John J. Morris
  • Method of treatment, stabilization and heave control for chromite ore processing residues (COPR) and chromium contaminated soils
    Publication number: 20070088188
    Abstract: A process for stabilizing chromium in a chromite ore processing residue (COPR) comprises the steps of adding an acid to consume the excess alkalinity of the COPR, resulting in a pH of less than 10; and adding a chemical reductant to the COPR to convert any hexavalent chromium present to trivalent chromium. A source of sulfate may be added to the COPR to reduce heave potential and improve its geotechnical stability. Treated COPR may be encapsulated in a material suitable to prevent contact between the COPR and water, such as an asphalt.
    Type: Application
    Filed: March 31, 2006
    Publication date: April 19, 2007
    Inventors: Mahmoud Wazne, Dimitris Dermatas, Dilhan Kalyon, Xiaoguang Meng, Maria Kaouris, John Morris