Patents by Inventor David I. Randall

David I. Randall 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: 4451278
    Abstract: A method of inhibiting the growth of weeds is provided by applying to the situs to be treated, an effective herbicidal amount of a compound containing the 1-anthraquinonyloxy moiety, such as 1-hydroxyanthraquinone.
    Type: Grant
    Filed: July 28, 1972
    Date of Patent: May 29, 1984
    Assignee: GAF Corporation
    Inventor: David I. Randall
  • Patent number: 4293505
    Abstract: A process for producing .beta.-haloethylphosphonic acids, by cleaving bis(alkyl or haloalkyl) .beta.-haloethylphosphonate with anhydrous hydrogen halide at a temperature of 140.degree.-175.degree. C.
    Type: Grant
    Filed: January 31, 1980
    Date of Patent: October 6, 1981
    Inventor: David I. Randall
  • Patent number: 3994970
    Abstract: Plant growth regulating compound is 2-chloroethanephosphonic diamide of the formula: ##EQU1## where the compound is prepared by the reaction of ammonia with 2-chloroethylphosphonyl dihalide and subsequently purified to remove ammonium halide by reaction with a secondary amine in chloroform.
    Type: Grant
    Filed: November 16, 1971
    Date of Patent: November 30, 1976
    Assignee: GAF Corporation
    Inventors: David I. Randall, Robert W. Wynn
  • Patent number: 3988350
    Abstract: A low molecular weight complex of a lactam and a substituted phenolic compound having the formula ##SPC1##Wherein n is an integer of 3 to 5; W is hydrogen or alkyl having from 1 to 8 carbon atoms including cycloalkyl substituents; each R and R', R.sub.2 and R'.sub.2 is alkoxy of from 1 to 3 carbon atoms, nitro, cyano, hydrogen, halogen or alkyl having from 1 to 12 carbon atoms and at least one R, R', R.sub.2 and R'.sub.2 is a substituent other than hydrogen, and wherein R.sub.2 and R'.sub.2 can also be alaninyl.
    Type: Grant
    Filed: October 10, 1974
    Date of Patent: October 26, 1976
    Assignee: GAF Corporation
    Inventors: Joseph P. Copes, David I. Randall
  • Patent number: 3988351
    Abstract: A complex of a polylactam and a phenolic compound having the formula: ##SPC1##Wherein m is an integer from 2 to 5; z and y are expressed as a ratio of z:y and is 1:1, 1:2, 2:3 or 1:4; W is alkylene having from 3 to 20 carbon atoms and each R and R.sub.2 is hydrogen, halogen, hydroxyl, alkoxy of 1 to 4 carbon atoms, amido, alkyl hydroxy of from 1 to 4 carbon atoms, cyano or alkyl having from 1 to 12 carbon atoms, and wherein R.sub.2 can also be alaninyl, or ##SPC2##Where each R' is hydrogen, hydroxyl, halo, cyano, alkyl having from 1 to 6 carbon atoms or nitro. The complexes are useful as germicides, insecticides, wood preservatives, plasticizers, and anti-oxidants.
    Type: Grant
    Filed: October 10, 1974
    Date of Patent: October 26, 1976
    Assignee: GAF Corporation
    Inventors: Joseph P. Copes, David I. Randall
  • Patent number: 3988318
    Abstract: A low molecular weight complex of a lactam and a hydroxy phenolic compound having the formula: ##SPC1##Wherein n is an integer of 3 to 5; W is hydrogen or alkyl having from 1 to 8 carbon atoms including cycloalkyl substituents; each R or R.sub.2 is alkoxy of from 1 to 4 carbon atoms, hydrogen, halogen, hydroxyl, nitro, cyano, carboxylamino, alkylhydroxy having from 1 to 4 carbon atoms or alkyl having from 1 to 10 carbon atoms, and wherein R.sub.2 can also be alaninyl or a hydroxy benzyl radical having the formula ##SPC2##Where R' is hydroxyl, cyano, alkyl having from 1 to 6 carbon atoms, hydrogen or halogen and wherein at least one R or R.sub.2 is hydroxy when R.sub.2 is other than a hydroxy benzyl radical.
    Type: Grant
    Filed: October 10, 1974
    Date of Patent: October 26, 1976
    Assignee: GAF Corporation
    Inventors: Joseph P. Copes, David I. Randall
  • Patent number: 3956313
    Abstract: N-(Substituted-thiomethyl)-2-pyrrolidinones of the structural formula: ##SPC1##Wherein R represents hydrocarbon or substituted hydrocarbon groups such as alkyl, aryl, alkenyl, alkynyl, cycloalkyl, aralkyl and alkaryl, are useful as organic solvents and dyestuff intermediates. They are prepared by the reaction of N-hydroxymethyl-2-pyrrolidinone with a hydrocarbyl or substituted hydrocarbyl mercaptan in the presence of an acid catalyst.
    Type: Grant
    Filed: April 13, 1970
    Date of Patent: May 11, 1976
    Assignee: GAF Corporation
    Inventors: Harlan B. Freyermuth, David I. Randall
  • Patent number: 3951969
    Abstract: Plant growth regulating compounds are N-substituted-P-(2-chloroethyl)-phosphonamidic esters of the formula: ##EQU1## wherein R is cycloalkyl, R.sub.1 is hydrogen or cycloalkyl or R and R.sub.1 together form a heterocyclic ring such as morpholine, piperidine or pyrrolidine and R.sub.2 is alkyl or haloalkyl. They are prepared by the reaction of 2-chloroethylphosphonohalidic esters with the appropriate secondary amine.
    Type: Grant
    Filed: February 12, 1974
    Date of Patent: April 20, 1976
    Assignee: GAF Corporation
    Inventors: David I. Randall, Robert W. Wynn
  • Patent number: 3947594
    Abstract: Fungicidally active compounds, compositions containing the same and methods for making and using such compounds wherein the fungicidally active compounds include 1-substituted anthraquinones (and the acyl esters, carbamates and carbonates thereof), the 1-substituted anthraquinone having the formula: ##SPC1##Wherein R is hydrogen or acyl, X is halo such as chloro, fluoro or bromo, Z is hydrogen, halo such as chloro, fluoro or bromo, nitro, sulfo or lower alkyl, Y is hydrogen, halo or lower alkyl, and W is hydrogen, hydroxy, halo or lower alkyl. Preferably R is hydrogen, X is halo, Z is hydrogen, halo such as chloro, fluoro or bromo or lower alkyl, Y is hydrogen, chloro or lower alkyl, and W is hydrogen, alkyl or chloro.
    Type: Grant
    Filed: December 18, 1974
    Date of Patent: March 30, 1976
    Assignee: GAF Corporation
    Inventor: David I. Randall
  • Patent number: 3938983
    Abstract: Plant growth regulating compounds are N-substituted-P-(2-chloroethyl)-phosphonamidic esters of the formula: ##EQU1## wherein R is cycloalkyl, R.sub.1 is hydrogen or cycloalkyl or R and R.sub.1 together form a heterocyclic ring such as morpholine, piperidine or pyrrolidine and R.sub.2 is alkyl or haloalkyl. They are prepared by the reaction of 2-chloroethylphosphonohalidic esters with the appropriate secondary amine.
    Type: Grant
    Filed: February 12, 1974
    Date of Patent: February 17, 1976
    Assignee: GAF Corporation
    Inventors: David I. Randall, Robert W. Wynn
  • Patent number: 3931303
    Abstract: Method of preparing 5-halo-2,3-phenylenediamine-1-carboxylic acids having the following formula: ##SPC1##Wherein X is Cl, Br or F by reacting a 2,5-dihalo-3-nitrobenzoic acid with ammonium hydroxide to yield 5-halo-3-nitro anthranilic acid followed by a reduction of the resultant product. The 5-halo-2,3-phenylenediamine-1-carboxylic acids are useful as herbicides and as intermediates for use in the preparation of dyestuffs, photographic developers, pharmaceuticals, antioxidants and the like.
    Type: Grant
    Filed: June 28, 1973
    Date of Patent: January 6, 1976
    Assignee: GAF Corporation
    Inventors: Charles H. Chang, David I. Randall