Patents Represented by Attorney Clark DeLarvin

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  • Recovery of metallic compounds from geothermal brine
    Patent number: 5254225
    Abstract: A geothermal brine containing recoverable metals is contacted with at least two electrodes, across which an electrical potential is applied to cause the metals to deposit upon said electrodes. The invention is particularly useful for the recovery of iron, zinc, lead, and manganese from a brine from a geothermal aquifer such as is found at the Salton Sea in California.
    Type: Grant
    Filed: August 29, 1991
    Date of Patent: October 19, 1993
    Assignee: Union Oil Company of California
    Inventor: Darrell L. Gallup
  • Plant control composition and methods of use
    Patent number: 5221659
    Abstract: Compositions and methods for vegetation control comprise synergistic combinations of a thiazol-urea abscission agent and an adduct formed by the reaction of sulfuric acid with an amide. The synergistic combinations are particularly useful for the defoliation of cotton.
    Type: Grant
    Filed: October 28, 1991
    Date of Patent: June 22, 1993
    Assignee: Union Oil Company of California
    Inventor: Mark L. Atwater