Patents Represented by Attorney Richard D. Elden

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  • Oxidation of sulfides in polymer-thickened aqueous solution
    Patent number: 4552668
    Abstract: A method for preferentially oxidizing sulfide in a viscous, aqueous solution of a hydratable polymeric material suitable for use in hydraulically treating subterranean formations.
    Type: Grant
    Filed: July 30, 1984
    Date of Patent: November 12, 1985
    Assignee: FMC Corporation
    Inventors: Richard A. Brown, Robert D. Norris