Patents Represented by Attorney R. L. Hansen

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  • Process to insecticide intermediate
    Patent number: 4465879
    Abstract: A 3-halo-2-methylphenylmagnesium halide is cross-coupled with a halobenzene under heterogeneous conditions using palladium metal as catalyst, producing a 3-halo-2-methyl[1,1'-biphenyl].
    Type: Grant
    Filed: August 19, 1983
    Date of Patent: August 14, 1984
    Assignee: FMC Corporation
    Inventor: Eric G. DelMar
  • Nematicidal 2-chloro-5-aryl-1,3,4-thiadiazoles
    Patent number: 4454147
    Abstract: 2-Chloro-5-aryl-1,3,4-thiadiazoles of the formula ##STR1## wherein X and Y are independently hydrogen, lower alkyl, lower alkoxy, aryl, substituted aryl, halogen, isothiocyano, trifluoromethylthio, or nitro exhibit nematicidal activity when applied to or incorporated into nematode-infested soil.
    Type: Grant
    Filed: May 27, 1982
    Date of Patent: June 12, 1984
    Assignee: FMC Corporation
    Inventors: William S. DiMenna, Carmine P. DiSanzo
  • Insecticidal 2,2'-bridged[1,1'-biphenyl]-3-ylmethyl esters
    Patent number: 4433182
    Abstract: 2,2'-Bridged[1,1'-biphenyl]-3-ylmethyl cyclopropanecarboxylates and insecticidal compositions containing these esters are useful for the control of a broad range of insects and acarids.
    Type: Grant
    Filed: December 17, 1981
    Date of Patent: February 21, 1984
    Assignee: FMC Corporation
    Inventor: Ernest L. Plummer
  • Copper-catalyzed biaromatic coupling process
    Patent number: 4423234
    Abstract: Improved yields of biaromatic compounds, e.g., unsymmetrical biphenyl compounds, result by incorporating metallic copper in a non-aqueous diazonium-type coupling reaction.
    Type: Grant
    Filed: May 17, 1982
    Date of Patent: December 27, 1983
    Assignee: FMC Corporation
    Inventors: Ernest L. Plummer, David E. Seelye
  • Insecticidal (1,1'-biphenyl)-3-ylmethyl esters
    Patent number: 4402973
    Abstract: [1,1'-Biphenyl]-3-ylmethyl pyrethroid esters, as well as processes, uses, and intermediates thereto, are disclosed. The [1,1'-biphenyl]-3-ylmethyl pyrethroid esters control a broad spectrum of insects as well as acarids.
    Type: Grant
    Filed: May 21, 1981
    Date of Patent: September 6, 1983
    Assignee: FMC Corporation
    Inventor: Ernest L. Plummer
  • Insecticidal (2,6-dimethyl-3-substituted phenyl)methyl cyclopropanecarboxylates
    Patent number: 4375476
    Abstract: (2,6-Dimethyl-3-substituted phenyl)methyl cyclopropanecarboxylates and insecticidal compositions containing these esters are useful for the control of a broad range of insects and acarids.
    Type: Grant
    Filed: September 14, 1981
    Date of Patent: March 1, 1983
    Assignee: FMC Corporation
    Inventor: Angeline B. Cardis
  • Preparation of esters
    Patent number: 4323685
    Abstract: Certain alpha-cyano esters are prepared by reacting an acyl halide with an aldehyde in a substantially water-immiscible aprotic solvent and an aqueous solution of water-soluble cyanide salt in the presence of a rate-promoting agent selected from acid salts of tertiary amines.
    Type: Grant
    Filed: February 12, 1981
    Date of Patent: April 6, 1982
    Assignee: FMC Corporation
    Inventor: Jonathan S. Baum
  • Preparation of esters
    Patent number: 4322535
    Abstract: Certain alpha-cyano esters are prepared by reacting an acyl halide with an aldehyde in a substantially water-immiscible aprotic solvent and an aqueous solution of water-soluble cyanide salt in the presence of an amphoteric surfactant rate-promoting agent.
    Type: Grant
    Filed: February 12, 1981
    Date of Patent: March 30, 1982
    Assignee: FMC Corporation
    Inventor: Jonathan S. Baum
  • Preparation of esters
    Patent number: 4322534
    Abstract: Certain alpha-cyano esters are prepared by reacting an acyl halide with an aldehyde in a substantially water-immiscible aprotic solvent and an aqueous solution of water-soluble cyanide salt in the presence of an amine or cryptate rate-promoting agent.
    Type: Grant
    Filed: February 12, 1981
    Date of Patent: March 30, 1982
    Assignee: FMC Corporation
    Inventor: Jonathan S. Baum
  • Herbicidal 5-pyrimidinecarbonitriles
    Patent number: RE31136
    Abstract: 5-Pyrimidinecarbonitriles, having amino substituents in the 2 and 6 positions and an alkoxy substituent in the 4 position, exhibit herbicidal activity. The preparation of novel active compounds and intermediates in this class is described; herbicidal compositions containing the active compounds are illustrated; and methods for utilizing the herbicidal compositions to control plant growth are disclosed.
    Type: Grant
    Filed: August 8, 1980
    Date of Patent: February 1, 1983
    Assignee: FMC Corporation
    Inventor: Gino R. Treves