Patents by Inventor William Derek Jones

William Derek Jones 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).

  • Extraction of coal
    Patent number: 4101413
    Abstract: Coal can be extracted with high boiling aromatic oils produced by extracting the aromatic constituents of a heavy petroleum material, e.g. a bitumen residue, using a selective solvent, mixing the extract with a low-boiling aromatic solvent, adding water and separating the aromatic-containing phase and recovering said aromatic constituents. The resulting coal extract is particularly suitable for the production of electrode coke.
    Type: Grant
    Filed: February 23, 1977
    Date of Patent: July 18, 1978
    Assignee: Coal Industry (Patents) Limited
    Inventors: William Derek Jones, Geoffrey Michael Kimber, James McLaren, David Watkin Price