Patents by Inventor Colin E. Snape

Colin E. Snape 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).

  • Coal extraction
    Patent number: 4521291
    Abstract: Coal is extracted using a mixed solvent which includes a substantially aromatic component and a substantially naphthenic component, at a temperature of 400.degree. to 500.degree. C. Although neither component is an especially good solvent for coal by itself, the use of mixed solvent gives greater flexibility to the process and offers efficiency gains.
    Type: Grant
    Filed: April 4, 1984
    Date of Patent: June 4, 1985
    Assignee: Coal Industry (Patents) Limited
    Inventors: James W. Clarke, Geoffrey M. Kimber, Terry D. Rantell, Colin E. Snape