Patents by Inventor David M. Weighton

David M. Weighton has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4517201
    Abstract: Pesticidal compositions containing amitraz and the synthetic pyrethroid cypermethrin are described. The compositions which preferably contain the active ingredients in a ratio of from 250:1 to 1:10 by weight, are synergistic and have activity against a wide range of insect and acarid pests. They are particularly useful in controlling pests on cotton and fruit crops.
    Type: Grant
    Filed: July 22, 1983
    Date of Patent: May 14, 1985
    Assignee: FBC Limited
    Inventors: John C. Kerry, David M. Weighton
  • Patent number: 4255435
    Abstract: 1(2)-(N,N-disubstituted carbamoyl)-3,5-substituted-1,2,4-triazoles, with insecticidal and nematicidal properties, are described.
    Type: Grant
    Filed: January 4, 1980
    Date of Patent: March 10, 1981
    Assignee: The Boots Company Limited
    Inventors: Thomas I. Watkins, David M. Weighton
  • Patent number: 4239774
    Abstract: Pesticidal compositions containing amitraz and a pesticidal tin compound selected from cyhexatin and fenbutatin oxide, are described. The compositions, which preferably comprise the active ingredients in the ratio of 1:10 to 10:1 by weight, are synergistic and have activity against a wide range of insect and acarid pests. They are particularly useful in controlling pests on fruit crops.
    Type: Grant
    Filed: November 16, 1979
    Date of Patent: December 16, 1980
    Assignee: The Boots Company Limited
    Inventors: John C. Kerry, David M. Weighton
  • Patent number: 4166130
    Abstract: Pesticidal compositions containing amitraz and camphechlor are described. The compositions, which comprise the active ingredients in the ratio of from 2:1 to 1:150 by weight, are synergistic and have activity against a wide range of insect and acarid pests. They are particularly useful in controlling insects on cotton crops.
    Type: Grant
    Filed: May 31, 1978
    Date of Patent: August 28, 1979
    Assignee: The Boots Company Limited
    Inventors: John C. Kerry, David M. Weighton
  • Patent number: 4154945
    Abstract: 1-(N,N-disubstituted carbamoyl and thiocarbamoyl)-imidazoles, useful as fungicidal compounds, and their preparation, are described.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: May 15, 1979
    Assignee: The Boots Company Limited
    Inventors: Robert F. Brookes, David H. Godson, Anthony F. Hams, David M. Weighton, Wilfred H. Wells
  • Patent number: 4081540
    Abstract: Novel imidazole compounds, pesticidal compositions and methods of using them, and their preparation are described. The compounds have the formula ##STR1## in which X is oxygen or sulphur, R.sup.3 is hydrogen, alkyl, alkenyl or optionally substituted alkylthio, alkenylthio, aralkylthio, alkoxyalkyl or alkylthioalkyl, R.sup.4 is alkyl or cycloalkyl, and R.sup.1 and R.sup.2 are each lower alkyl or alkenyl, R.sup.1 is lower alkyl and R.sup.2 is alkoxyalkyl or haloalkyl, or R.sup.1 and R.sup.2 together with the nitrogen atom to which they are attached, form an optionally substituted heterocyclic ring; and salts thereof. Novel compounds are of particular value against insects e.g. aphids, and against other pests, e.g. acarids.
    Type: Grant
    Filed: September 27, 1976
    Date of Patent: March 28, 1978
    Assignee: The Boots Company Limited
    Inventors: Maurice W. Baker, John C. Kerry, Antonin Kozlik, John R. Marshall, Kenneth J. Nichol, David M. Weighton
  • Patent number: 4080462
    Abstract: 1-(N,N-disubstituted carbamoyl and thiocarbamoyl)-imidazoles, useful as fungicidal compounds, and their preparation, are described.
    Type: Grant
    Filed: September 7, 1976
    Date of Patent: March 21, 1978
    Assignee: The Boots Company Limited
    Inventors: Robert F. Brookes, David H. Godson, Anthony F. Hams, David M. Weighton, Wilfred H. Wells
  • Patent number: 4054664
    Abstract: 1(2)-(N,N-disubstituted carbamoyl)-3,5-substituted-1,2,4-triazoles, useful as insecticidal compounds, and their preparation, are described.
    Type: Grant
    Filed: July 8, 1975
    Date of Patent: October 18, 1977
    Assignee: The Boots Company Limited
    Inventors: Thomas I. Watkins, David M. Weighton
  • Patent number: 4048188
    Abstract: New imidazole compounds, pesticidal compositions and methods of using them, and their preparation are described. The compounds have the formula ##STR1## in which X is oxygen or sulphur, R.sup.3 is hydrogen, alkyl or alkenyl, R.sup.4 is alkyl or cycloalkyl, and R.sup.1 and R.sup.2 are each lower alkyl or alkenyl, R.sup.1 is lower alkyl and R.sup.2 is alkoxyalkyl or haloalkyl, or R.sup.1 and R.sup.2 together with the nitrogen atom to which they are attached, from a heterocyclic ring. Novel compounds are of particular value against insects e.g. aphids, and against other pests, e.g. acarids.
    Type: Grant
    Filed: January 22, 1975
    Date of Patent: September 13, 1977
    Assignee: The Boots Company Limited
    Inventors: Maurice W. Baker, John C. Kerry, Kenneth J. Nichol, John R. Marshall, David M. Weighton, Antonin Kozlik
  • Patent number: 3996366
    Abstract: Novel imidazole compounds, pesticidal compositions and methods of using them, and their preparation are described. The compounds have the formula ##STR1## in which X is oxygen or sulphur, R.sup.3 is hydrogen, alkyl, alkenyl or optionally substituted alkylthio, alkenylthio, aralkylthio, alkoxyalkyl or alkylthioalkyl, R.sup.4 is alkyl or cycloalkyl, and R.sup.1 and R.sup.2 are each lower alkyl or alkenyl, R.sup.1 is lower alkyl and R.sup.2 is alkoxyalkyl or haloalkyl, or R.sup.1 and R.sup.2 together with the nitrogen atom to which they are attached, form an optionally substituted heterocyclic ring; and salts thereof. Novel compounds are of particular value against insects e.g. aphids, and against other pests, e.g. acarids.
    Type: Grant
    Filed: November 14, 1974
    Date of Patent: December 7, 1976
    Assignee: The Boots Company Limited
    Inventors: Maurice W. Baker, John C. Kerry, Antonin Kozlik, John R. Marshall, Kenneth J. Nichol, David M. Weighton
  • Patent number: 3991071
    Abstract: 1-(N,N-disubstituted carbamoyl and thiocarbamoyl)-imidazoles, useful as fungicidal compounds, and their preparation, are described.
    Type: Grant
    Filed: December 13, 1974
    Date of Patent: November 9, 1976
    Assignee: The Boots Company Limited
    Inventors: Robert F. Brookes, David H. Godson, Anthony F. Hams, David M. Weighton, Wilfred H. Wells
  • Patent number: 3940484
    Abstract: Insecticidal composition comprising a compound of the formula ##SPC1##In which X is selected from the group consisting of oxygen and sulphur, R.sup.3 is selected from the group consisting of hydrogen and alkyl of 1 to 4 carbon atoms, R.sup.4 is selected from the group consisting of alkyl of 1 to 10 carbon atoms and cycloalkyl of 3 to 10 carbon atoms, form a morpholino group optionally containing 1 to 4 methyl substituents attached to carbon atoms of the ring, together with a suitable carrier. The insecticidal compositions are of particular vaule against insects, e.g., aphids, and against other pests, e.g., acarids.
    Type: Grant
    Filed: November 21, 1973
    Date of Patent: February 24, 1976
    Assignee: The Boots Company Limited
    Inventors: Maurice W. Baker, John C. Kerry, Kenneth J. Nichol, John R. Marshall, David M. Weighton, Antonin Kozlik