Patents by Inventor Peter T. Roberts

Peter T. Roberts 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: 4863966
    Abstract: Compounds of formula (I) are pesticides having activity against arthropods: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are H, alkyl, alkoxy, halo, cyano or trifluoromethyl, or two of R.sup.1, R.sup.2 and R.sup.3 are linked to form a 3 or 4 carbon atom group;X is O or NA where A is H or alkyl;R is H or alkyl; andR.sup.4 and R.sup.5 are H, alkenyl or haloalkenyl or optionally substituted alkyl, aryl or aralkyl, or NR.sup.4 R.sup.5 represents a heterocyclic ring; or an acid addition salt thereof.The invention further provides methods for the preparation of the compounds, pesticidal formulations containing them, and their use in controlling arthropod pests.
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: September 5, 1989
    Assignee: Burroughs Wellcome Co.
    Inventors: Malcolm H. Black, Alexander D. Frenkel, Peter T. Roberts
  • Patent number: 4414223
    Abstract: 1-Phenoxyalkyl- and 1-anilinoalkyl imidazolines, methods for the preparation thereof, the use thereof as intermediates and pesticides and pesticidal formulations containing such compounds.
    Type: Grant
    Filed: May 18, 1981
    Date of Patent: November 8, 1983
    Assignee: Burroughs Wellcome Co.
    Inventors: Frederick C. Copp, Peter T. Roberts, Alexander D. Frenkel, David Collard
  • Patent number: 4320142
    Abstract: Compounds of formula (I) are pesticides active against arthropods. ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 are H, alkyl, alkoxy, halo, CN or CF.sub.3 or two are linked to form a 3 or 4 carbon atom group;X is O or NA where A is H or alkyl;R is H or alkyl;R.sup.4 is H or optionally substituted alkyl, aryl, aralkyl, alkenyl or alkynyl; andR.sup.5 is --CB. R.sup.6 where B is O, S or NR.sup.7 where R.sup.7 is H, alkyl, alkoxy, or optionally substituted aryl or aralkyl;R.sup.6 is H, R.sup.8, OR.sup.8, SR.sup.8 or NR.sup.9 R.sup.10 where R.sup.8 is alkyl, alkenyl or optionally substituted aryl, aralkyl or aryloxyalkyl; and R.sup.9 and R.sup.10 are H, alkyl or optionally substituted aryl or aralkyl;The invention also comprises processes for the preparation of compounds (I), formulations containing them, and their use as pesticides.
    Type: Grant
    Filed: May 15, 1980
    Date of Patent: March 16, 1982
    Inventors: Malcolm H. Black, Alexander D. Frenkel, Peter T. Roberts
  • Patent number: 4238497
    Abstract: Imidazoline compounds of formula (I): ##STR1## wherein Ar is selected from a phenyl or a mono-, di- or tri-substituted phenyl radical in which the substituents are selected from alkyl, alkoxy, halogen, hydroxy, cyano, amino, trihalomethyl and nitro and in which any two adjacent carbon atoms of the phenyl ring may be joined by a carbon chain containing 3 or 4 carbon atoms;X.sup.1 is S, NR.sup.3 or NZ.sup.1 ;R.sup.1 and R.sup.2 are selected from hydrogen or alkyl;R.sup.3 is alkyl or aryl;m is 0 or 1; andZ.sup.1 and Z.sup.2 are a group SO.sub.n R.sup.9 or a group ##STR2## in which X.sup.2 is O, S or NR.sup.5 ; R.sup.4 is alkyl, aryl, alkoxy, aryloxy, amino or amido;R.sup.5 is alkyl, aryl, alkoxy, aryloxy, alkylthio, arylthio, amino or amido;the alkyl or alkoxy radicals containing from 1 to 4 carbon atoms each; or an acid addition salt of the imidazoline compound.Methods of preparing the compounds are provided, as are pesticidal formulations containing them.
    Type: Grant
    Filed: October 26, 1978
    Date of Patent: December 9, 1980
    Assignee: Burroughs Wellcome Co.
    Inventors: Malcolm H. Black, Alexander D. Frenkel, Peter T. Roberts
  • Patent number: 4226876
    Abstract: Compounds of formula (I): ##STR1## wherein Ar is an unsubstituted or mono-, di or tri-substituted phenyl radical in which the substituents are the same or different and are selected from alkyl, alkoxy, halogen, hydroxy, cyano, amino, trifluoromethyl or nitro and in which any two adjacent carbon atoms on the phenyl ring may optionally be joined by a carbon chain having 3 or 4 carbon atoms;X.sup.1 is O or NH;R.sup.1 and R.sup.2 are the same or different and are hydrogen or alkyl; andZ is a group SO.sub.n R.sup.8 or a group ##STR2## in which X.sup.2 is O, S or NR.sup.4 ; R.sup.3 is alkyl, aryl, alkyloxy, aryloxy or NR.sup.5 R.sup.6 ;R.sup.4 is alkyl, aryl, alkyloxy, aryloxy, alkylthio, arylthio or NR.sup.5 R.sup.6 ;R.sup.5 and R.sup.6 are the same or different and are hydrogen, alkyl, aryl, COR.sup.7 or SO.sub.2 R.sup.7 ;R.sup.7 is alkyl, aryl, alkoxy or aryloxy;n is 1 or 2;R.sup.8 is alkyl, aryl or NR.sup.9 R.sup.10 ; andR.sup.9 and R.sup.
    Type: Grant
    Filed: December 11, 1978
    Date of Patent: October 7, 1980
    Assignee: Burroughs Wellcome Co.
    Inventors: Frederick C. Copp, Peter T. Roberts, Alexander D. Frenkel, David Collard