Patents Represented by Attorney R. L. Andersen
  • Patent number: 4590286
    Abstract: The present invention concerns a process for epoxidizing an olefin to an oxirane by forming a monopercarboxylic acid in-situ by reacting a cyclic anhydride of a polybasic acid with hydrogen peroxide in the presence of a basic catalyst and recovering the oxirane as a distillate.
    Type: Grant
    Filed: October 28, 1985
    Date of Patent: May 20, 1986
    Assignee: FMC Corporation
    Inventor: Randy A. Bull
  • Patent number: 4588506
    Abstract: The present invention is a process to stimulate the biooxidation of a contaminant in a subterranean formation by introducing an aqueous solution into the formation. The concentration of the hydrogen peroxide is increased thereby acclimating the biota to higher concentrations of hydrogen peroxide. Periodically the concentration of the hydrogen peroxide is increased for a short time sufficiently to be toxic to the biota at or relatively adjacent to the site of introduction, thereby increasing the permeability of the formation at or adjacent to the site of introduction.
    Type: Grant
    Filed: November 8, 1984
    Date of Patent: May 13, 1986
    Assignee: FMC Corporation
    Inventors: Richard L. Raymond, Richard A. Brown, Robert D. Norris, Eugene T. O'Neill
  • Patent number: 4552892
    Abstract: Difluoroethenylcyclopropanecarboxylates of the formula ##STR1## in which R is a selected biphenylmethyl, bridged biphenylmethyl or 4-phenyl-2-indanyl group, having a high level of activity against acarids are disclosed.
    Type: Grant
    Filed: April 25, 1985
    Date of Patent: November 12, 1985
    Assignee: FMC Corporation
    Inventors: Ernest L. Plummer, John F. Engel, Richard B. Phillips