Patents Represented by Attorney G. F. Sieckmann

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  • N-Arylsulfinyl N-phosphonomethylglycinonitriles
    Patent number: 4407764
    Abstract: Ester derivatives of N-arylsulfinyl-N-phosphonomethylglycinonitriles useful as herbicides. Also described is a process for preparing the same, herbicidal compositions containing the same, and herbicidal methods employing such glycinonitriles and herbicidal compositions.
    Type: Grant
    Filed: August 31, 1981
    Date of Patent: October 4, 1983
    Assignee: Monsanto Company
    Inventors: James A. Sikorski, Mary A. Hoobler
  • Amide and hydrazide derivatives of N-trifluoroacetyl-N-phosphonomethylglycine
    Patent number: 4353731
    Abstract: This disclosure relates to alkyl N-trifluoroacetyl-N-phosphonomethylglycine amide and hydrazide derivatives, to herbicidal compositions containing same and to the herbicidal use thereof. These amide and hydrazide derivatives are useful as pre-emergent and/or post-emergent herbicides.
    Type: Grant
    Filed: April 2, 1981
    Date of Patent: October 12, 1982
    Assignee: Monsanto Company
    Inventors: John E. Franz, Robert J. Kaufman