Patents by Inventor Desmond L. Shields

Desmond L. Shields 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).

  • Patent number: 5695543
    Abstract: A method and system for recovering metal from steel waste products is disclosed. This method and system works on such hazardous and/or toxic wastes as mill scale, flue dust and slag. This method and system operates by mixing the steel waste produce with a flux composition and then melting the mix in a single phase two electrode electric arc furnace. Once the mixture is melted by the heat from the electrodes, the electro-magnetic field induced in the melted mixture serves to enhance the recovery from the steel waste product of useful steel material. Furthermore, this method and system provide a cost effective solution to the hazardous waste disposal problems impacting steel refineries around the world and does so in a manner that removes the toxicity of the waste while producing a variety of useful products, including high grade steel and neutralized fill.
    Type: Grant
    Filed: May 10, 1996
    Date of Patent: December 9, 1997
    Assignee: D & S Technologies, Inc.
    Inventor: Desmond L. Shields