Patents by Inventor Dana K. Elliott

Dana K. Elliott 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).

  • Process for removing mercury from soil
    Patent number: 5785935
    Abstract: Heavy metals are efficiently removed from contaminated soil by a process which comprises leaching or washing the soil with a mild leachant solution comprised of an aqueous solution of an acid and a salt. Heavy metals are also efficiently removed from paint chips by washing with an aqueous acid. The heavy metals are recovered from the leachant be cementation.
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: July 28, 1998
    Inventors: William E. Fristad, Michael J. Virnig, Dana K. Elliott
  • Process for removing lead from sandblasting wastes containing paint chips
    Patent number: 5660806
    Abstract: Heavy metals are efficiently removed from contaminated soil by a process which comprises leaching or washing the soil with a mild leachant solution comprised of an aqueous solution of an acid and a salt. Heavy metals are also efficiently removed from paint chips by washing with an aqueous acid. The heavy metals are recovered from the leachant be cementation.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 26, 1997
    Assignee: Henkel Corporation
    Inventors: William E. Fristad, Michael J. Virnig, Dana K. Elliott