Patents Represented by Attorney Cliff Dougherty, Jr.

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  • Methods of reducing precipitation from acid solutions
    Patent number: 5264141
    Abstract: Methods and compositions for reducing the precipitation of metal sulfides from acid solutions are provided. The methods basically comprise reducing the precipitation of metal sulfide compounds from an aqueous acid solution when the solution dissolves sulfide and metal ions by combining at least one oxime with the acid solution in an amount whereby the oxime preferentially reacts with sulfide ions in the solution and thereby prevents the sulfide ions from reacting with metal ions therein.
    Type: Grant
    Filed: June 8, 1992
    Date of Patent: November 23, 1993
    Assignee: Halliburton Company
    Inventors: Michael M. Brezinski, Rick D. Gdanski