Patents by Inventor Kurt Whitfield

Kurt Whitfield 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).

  • Hazardous waste stabilization methods, products and testing procedures
    Patent number: 6991593
    Abstract: A process for the stabilization of metal bearing waste is provided that is based upon the discovery that landfills have anaerobic environments. This process includes adjusting the pH of the waste and adding a sulfide containing reducing agent to the waste to achieve a reducing environment. In one embodiment, electric arc furnace dust is stabilized for landfill disposal. Also provided is a method for a determination of landfilled waste leachability. This method is performed under conditions that simulate the chemical characteristics of landfills. In one embodiment, stabilized metal bearing waste is deoxygenated and a simulated leachate is prepared under anaerobic conditions.
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: January 31, 2006
    Assignee: Heritage Environmental Services, LLC
    Inventors: Kenneth S. Price, Joe Kurek, Kurt Whitfield, Herbert I. Wissel
  • Hazardous waste stabilization methods, products and testing procedures
    Publication number: 20030185630
    Abstract: A process for the stabilization of metal bearing waste is provided that is based upon the discovery that landfills have anaerobic environments. This process includes adjusting the pH of the waste and adding a sulfide containing reducing agent to the waste to achieve a reducing environment. In one embodiment, electric arc furnace dust is stabilized for landfill disposal. Also provided is a method for a determination of landfilled waste leachability. This method is performed under conditions that simulate the chemical characteristics of landfills. In one embodiment, stabilized metal bearing waste is deoxygenated and a simulated leachate is prepared under anaerobic conditions.
    Type: Application
    Filed: December 4, 2002
    Publication date: October 2, 2003
    Inventors: Kenneth S. Price, Joe Kurek, Kurt Whitfield, Herbert I. Wissel