Patents by Inventor Lois L. McCorriston

Lois L. McCorriston 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).

  • Process using carbonate reagent for recovering vanadium from cokes and ashes derived from heavy oils
    Patent number: 4536374
    Abstract: Vanadium values are recovered from sulphur-containing cokes and ashes derived from heavy oils by a novel process comprising heating in the presence of alkali metal carbonate, contacting the resulting solid residue with water to form a leach and recovering the vanadium values dissolved therein. The heating step solubilizes only alkali metal vanadate and thus the leach solution is substantially free of contaminating substances.
    Type: Grant
    Filed: May 8, 1984
    Date of Patent: August 20, 1985
    Assignee: Gulf Canada Limited
    Inventor: Lois L. McCorriston
  • Process using carbonate reagent for recovering vanadium from cokes and ashes derived from heavy oils
    Patent number: 4472360
    Abstract: Vanadium values are recovered from sulphur-containing cokes and ashes derived from heavy oils by a novel process comprising heating in the presence of alkali metal carbonate, contacting the resulting solid residue with water to form a leach and recovering the vanadium values dissolved therein. The amount of alkali metal carbonate used is at least sufficient to convert the vanadium values present in the raw material into alkali metal vanadate, but insufficient to react in addition with all of the sulphur values therein. The heating step solubilizes only alkali metal vanadate and thus the leach solution is substantially free of contaminating substances.
    Type: Grant
    Filed: July 25, 1983
    Date of Patent: September 18, 1984
    Assignee: Gulf Canada Limited
    Inventor: Lois L. McCorriston
  • Process using sulphate reagent for recovering vanadium from cokes derived from heavy oils
    Patent number: 4389378
    Abstract: Vanadium values are recovered from cokes and ashes derived from heavy oils by a novel process comprising heating in the presence of alkali metal sulphate, contacting the resulting solid residue with water and recovering the vanadium values dissolved therein.
    Type: Grant
    Filed: December 24, 1981
    Date of Patent: June 21, 1983
    Assignee: Gulf Canada Limited
    Inventor: Lois L. McCorriston