Patents by Inventor Mohamed A. H. Fahmy

Mohamed A. H. Fahmy 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).

  • N-acylated pyrazolines
    Patent number: 5591764
    Abstract: N-sulfenylated and N-acylated pyrazoline arthropodicides, compositions containing them and methods for controlling arthropods by applying compounds of the invention to them or to their environment. The pyrazolines are selected from those of Formulae I to III wherein R.sub.1, R.sub.2, R.sub.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: January 7, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Mohamed A. H. Fahmy, deceased, Charles R. Harrison, George P. Lahm, Thomas M. Stevenson
  • N-acylated pyrazolines, compositions and use
    Patent number: 5491162
    Abstract: N-sulfenylated and N-acylated pyrazoline arthropodicides, compositions containing them and methods for controlling arthropods by applying compounds of the invention to them or to their environment. The pyrazolines are selected from those of Formulae I to III wherein R.sub.1, R.sub.2, R.sub.
    Type: Grant
    Filed: July 22, 1994
    Date of Patent: February 13, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Mohamed A. H. Fahmy, Charles R. Harrison, George P. Lahm, Thomas M. Stevenson
  • N-sulfenylated pyrazolines, compositions and use
    Patent number: 5196408
    Abstract: N-sulfenylated and N-acrylated pyrazoline arthropodicides, compositions containing them and methods for controlling arthropods by applying compounds of the invention to them or to their environment. The pyrazolines are selected from those of Formulae I to III wherein R.sub.1, R.sub.2, R.sub.
    Type: Grant
    Filed: March 12, 1991
    Date of Patent: March 23, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Mohamed A. H. Fahmy, deceased, Charles R. Harrison, George P. Lahm, Thomas M. Stevenson
  • N-acyl phosphonamidothioates and dithioates
    Patent number: 4900733
    Abstract: Certain N-acyl phosphonamidothioates and dithioates are useful as insecticides, acaricides and nematocides.
    Type: Grant
    Filed: October 13, 1987
    Date of Patent: February 13, 1990
    Assignee: E. I. DuPont De Nemours & Co.
    Inventor: Mohamed A. H. Fahmy
  • Process for production of phosphorothioic dichlorides
    Patent number: 4855474
    Abstract: The aldehyde RCHO is reacted with PCl.sub.3 and sulfur monochloride in the presence of chloride ion and under anhydrous conditions to give RCHClO(S)PCl.sub.2.
    Type: Grant
    Filed: March 18, 1987
    Date of Patent: August 8, 1989
    Assignee: E. I. Du Pont De Nemours and Company
    Inventors: Mohamed H. Fahmy, James R. Sanborn
  • Certain N-(R-sulfonyl) phosphonamidothioates and dithioates
    Patent number: 4804654
    Abstract: Compounds of the formula ##STR1## wherein the symbols have assigned meanings, and their use as insecticides and/or miticides.
    Type: Grant
    Filed: March 4, 1987
    Date of Patent: February 14, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Mohamed A. H. Fahmy
  • Certain N-(substituted-aminosulfinyl)phosphonamidothioate and dithioate pesticides
    Patent number: 4686209
    Abstract: Compounds of the formula ##STR1## wherein the symbols have assigned meanings, and their use for controlling insects and mites.
    Type: Grant
    Filed: January 10, 1986
    Date of Patent: August 11, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Mohamed A. H. Fahmy
  • N-formyl phosphonamidothioates as pesticides
    Patent number: 4683224
    Abstract: Compounds of the formula ##STR1## wherein the symbols have assigned meanings, and their use as insecticides, miticides and/or nematicides.
    Type: Grant
    Filed: July 21, 1986
    Date of Patent: July 28, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Mohamed A. H. Fahmy
  • O-ethyl S,S-dialkyl phosphorodithioates for use as pesticides
    Patent number: 4535077
    Abstract: O-ethyl S,S-dialkyl phosphorodithioates of the formula: ##STR1## in which one of R and R.sup.1 is an s-butyl group and the other of R and R.sup.1 is s-butyl or t-butyl, exhibiting high levels of activity against soil borne insects and nematodes and low phytotoxicity, are described and exemplified.
    Type: Grant
    Filed: December 8, 1983
    Date of Patent: August 13, 1985
    Assignee: FMC Corporation
    Inventor: Mohamed A. H. Fahmy
  • O-Ethyl S-propyl S-s-butyl phosphorodithioate
    Patent number: 4532235
    Abstract: An O-ethyl S,S-dialkyl phosphorodithioate of the formula: ##STR1## in which one of R and R.sup.1 is an s-butyl group and the other of R and R.sup.1 is n-propyl, exhibiting high levels of activity against soil borne insects and nematodes and low phytotoxicity, is described and exemplified.
    Type: Grant
    Filed: December 14, 1983
    Date of Patent: July 30, 1985
    Assignee: FMC Corporation
    Inventor: Mohamed A. H. Fahmy
  • O-Halophenyl O-alkyl S-tert-butyl phosphorothioates as pesticides
    Patent number: 4496552
    Abstract: Compounds of the formula ##STR1## in which R.sup.1 is tertiary butyl, R.sub.a and R.sub.b are each bromine or chlorine, and R.sub.c and R.sub.d are each hydrogen, bromine or chlorine, having superior residual activity against foliar feeding insects and acarids are disclosed and exemplified.
    Type: Grant
    Filed: April 22, 1983
    Date of Patent: January 29, 1985
    Assignee: FMC Corporation
    Inventor: Mohamed A. H. Fahmy
  • S-Alkyls-(tertiary alkyl) alkylphosphonodithioate insecticides and nematocides
    Patent number: 4472390
    Abstract: Compounds having the formula ##STR1## in which R is an alkyl of 1 to 8 carbon atoms, haloalkyl of 1 to 8 carbon atoms, alkenyl of 2 to 8 carbon atoms, haloalkenyl of 2 to 8 carbon atoms, alkynyl of 2 to 8 carbon atoms, or haloalkynyl of 2 to 8 carbon atoms;R.sub.1 is an alkyl of 1 to 8 carbon atoms; andR.sub.2 is tertiary alkyl of 4 to 8 carbon atoms; are disclosed as well as their use as insecticides and nematocides, e.g. in controlling Corn rootworm and Southern Armyworm.
    Type: Grant
    Filed: March 5, 1982
    Date of Patent: September 18, 1984
    Assignee: Rhone-Poulenc Agrochimie
    Inventor: Mohamed A. H. Fahmy
  • O-Aryl-s-(tertiary alkyl) alkylphosphonothioate insecticides and nematocides
    Patent number: 4472391
    Abstract: Compounds having the formula ##STR1## in which R is alkyl of 1 to 8 carbon atoms, haloalkyl of 1 to 8 carbon atoms, alkenyl of 2 to 8 carbon atoms, haloalkenyl of 2 to 8 carbon atoms, alkynyl of 2 to 8 carbon atoms or haloalkynyl of 2 to 8 carbon atoms;R.sub.1 is aryl;R.sub.2 is tertiary alkyl of 4 to 8 carbon atoms; are disclosed as well as their use as insecticides and nematocides, e.g., in controlling corn rootworm and Southern Armyworm.
    Type: Grant
    Filed: April 19, 1982
    Date of Patent: September 18, 1984
    Assignee: Rhone-Poulenc Agrochimie
    Inventor: Mohamed A. H. Fahmy
  • O-Trihaloethyl phosphorodithioate pesticides
    Patent number: 4457923
    Abstract: Compounds of the formula ##STR1## in which X is halogen and R.sup.1 and R.sup.2 are each alkyl groups, insecticidal, acaricidal and nematicidal compositions thereof, and a method for controlling such pests are disclosed.
    Type: Grant
    Filed: March 31, 1982
    Date of Patent: July 3, 1984
    Assignee: FMC Corporation
    Inventor: Mohamed A. H. Fahmy
  • S-Tertiary alkyl phosphoroamidodithioate pesticides
    Patent number: 4450158
    Abstract: Compounds of the formula ##STR1## in which R and R.sup.1 are alkyl of 1 to 4 carbon atoms, R.sup.2 is a tertiary alkyl group of 4 to 8 carbon atoms, and R.sup.3 is an alkyl group of 1 to 8 carbon atoms, insecticidal and nematicidal compositions thereof, and a method for controlling such pests are disclosed.
    Type: Grant
    Filed: May 13, 1982
    Date of Patent: May 22, 1984
    Assignee: FMC Corporation
    Inventor: Mohamed A. H. Fahmy
  • Pyridylalkoxysulfinyl derivatives of carbamate esters
    Patent number: 4350699
    Abstract: A novel class of chemical compounds useful as pesticides consists of pyridylalkoxysulfinyl derivatives of carbamate esters. The preparation of these compounds and their formulation to control insects are exemplified.
    Type: Grant
    Filed: March 30, 1981
    Date of Patent: September 21, 1982
    Assignee: The Regents of the University of California
    Inventors: Mohamed A. H. Fahmy, Tetsuo R. Fukuto, Teruomi Jojima
  • Production of N-chlorosulfinylcarbamate esters
    Patent number: 4344883
    Abstract: N-chlorosulfinylcarbamate esters are produced by the reaction of thionyl chloride with carbamate esters having one unsubstituted hydrogen on the carbamate nitrogen atom, preferably in the presence of a hydrogen chloride acceptor. The resulting N-chlorosulfinylcarbamate esters are useful intermediates in the preparation of pesticides having relatively low mammalian toxicity.
    Type: Grant
    Filed: October 6, 1980
    Date of Patent: August 17, 1982
    Assignee: The Regents of the University of California
    Inventors: Mohamed A. H. Fahmy, Tetsuo R. Fukuto
  • Pesticidal symmetrical and asymmetrical sulfinyldicarbamates containing a heterocyclic group
    Patent number: 4315027
    Abstract: A novel class of chemical compounds useful as pesticides consists of symmetrical and asymmetrical N,N'-sulfinyldicarbamate esters. The preparation of these compounds and their formulation to control insects are exemplified.
    Type: Grant
    Filed: May 9, 1980
    Date of Patent: February 9, 1982
    Assignee: The Regents of the University of California
    Inventors: Mohamed A. H. Fahmy, Tetsuo R. Fukuto
  • Alkylpolyoxysulfinyl and alkylpolythiosulfinyl derivatives of carbamate esters
    Patent number: 4315026
    Abstract: A novel class of chemical compounds useful as pesticides consists of alkylpolyoxysulfinyl and alkylpolythiosulfinyl derivatives of carbamate esters. The preparation of these compounds and their formulation to control insects are exemplified.
    Type: Grant
    Filed: April 11, 1980
    Date of Patent: February 9, 1982
    Assignee: The Regents of the University of California
    Inventors: Mohamed A. H. Fahmy, Tetsuo R. Fukuto, Teruomi Jojima
  • N-Alkylsulfonyl-, N-arylsulfonyl-, and N-aminosulfonylaminosulfinylcarbamate esters
    Patent number: 4308274
    Abstract: A novel class of chemical compounds useful as pesticides consists of N-alkylsulfonyl-, N-arylsulfonyl-, and N-aminosulfonylaminosulfinylcarbamate esters. The preparation of these compounds and their formulation to control insects are exemplified.
    Type: Grant
    Filed: April 2, 1979
    Date of Patent: December 29, 1981
    Assignee: The Regents of the University of California
    Inventors: Mohamed A. H. Fahmy, Tetsuo R. Fukuto