Patents Represented by Attorney H. W. Coryell

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  • Reduction of sodium in coal by water wash and ion exchange with a weak electrolyte
    Patent number: 4705530
    Abstract: Coal can be freed of ion-exchangeable sodium by contacting it with aqueous solutions of CO.sub.2 or formic or acetic acids at a mine mouth or contacting it with aqueous CO.sub.2 while transporting it in a pipeline.
    Type: Grant
    Filed: March 6, 1987
    Date of Patent: November 10, 1987
    Assignee: Shell Oil Company
    Inventors: George C. Blytas, Frank J. Trogus
  • Reduction of sodium in coal by water wash followed by ion exchange within a pipeline
    Patent number: 4705531
    Abstract: A coal or similar carbonaceous fuel is selectively freed of sodium by water washing it and ion exchanging the washed coal with a strong aqueous electrolyte solution which is substantially free of sodium ions and contains a kind and concentration of ions which are correlated with the composition of the coal to cause a selective removal of ion-exchangeable sodium from the coal, with at least a significant proportion of the ion-exchanging being conducted within a pipeline.
    Type: Grant
    Filed: September 24, 1985
    Date of Patent: November 10, 1987
    Assignee: Shell Oil Company
    Inventor: George C. Blytas
  • Well treating process for consolidating particles with aqueous emulsions of epoxy resin components
    Patent number: 4000781
    Abstract: Particles are resin-coated in a remote location, such as a subterranean reservoir or a sand or gravel pack, by contacting them with a cationic aqueous emulsion which contains a resin-forming mixture of a polyepoxide and a relatively water-soluble tertiary-amine that is capable of both catalyzing the polymerization of the polyepoxide and oil-wetting of solid surfaces.
    Type: Grant
    Filed: November 13, 1975
    Date of Patent: January 4, 1977
    Assignee: Shell Oil Company
    Inventor: Randolph H. Knapp