Patents by Inventor Eirlys R. Isaac

Eirlys R. Isaac 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).

  • Compositions and methods of combatting weeds in crops with 2,6-dihalobenzyl ether
    Patent number: 4042369
    Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is alkyl; R.sub.2 is alkyl, aryl or aralkyl; R.sub.3 is hydrogen or alkyl or R.sub.2 and R.sub.3 together is polymethylene; and R.sub.4 is 2,6-dihalobenzyl are useful as herbicides.
    Type: Grant
    Filed: April 28, 1975
    Date of Patent: August 16, 1977
    Assignee: Shell Oil Company
    Inventors: Michael D. Barker, Eirlys R. Isaac, Peter Kirby, Graham C. Smith
  • Trihydric alcohol derivatives
    Patent number: 4004911
    Abstract: Certain novel trihydric alcohol derivatives, useful as herbicides and fungicides.
    Type: Grant
    Filed: April 18, 1975
    Date of Patent: January 25, 1977
    Assignee: Shell Oil Company
    Inventors: Eirlys R. Isaac, Michael D. Barker
  • Herbicidal amide derivatives
    Patent number: 4000149
    Abstract: New compounds of the formula ##STR1## wherein R.sub.1 and R.sub. 2 each is alkyl; R.sub.3 is a nitrogen-containing heterocyclic group; and R.sub. 4 is optionally substituted phenyl, are useful as herbicides.
    Type: Grant
    Filed: August 4, 1975
    Date of Patent: December 28, 1976
    Assignee: Shell Oil Company
    Inventors: Eirlys R. Isaac, Peter Kirby
  • Cyclic acetals of alpha-oxocarboxylic acid derivatives
    Patent number: 3986860
    Abstract: Cyclic acetals of the formula ##EQU1## where R.sub. 1 is hydroxy, alkoxy, or NHZ, Z is hydrogen, alkyl, cycloalkyl, benzyl, or optionally substituted phenyl, R.sub. 2 is hydrogen or alkyl, R.sub.3 is alkyl, and R.sub.4 is aralkyl, are useful as herbicides.
    Type: Grant
    Filed: November 8, 1974
    Date of Patent: October 19, 1976
    Assignee: Shell Oil Company
    Inventors: Peter Kirby, Eirlys R. Isaac
  • Herbicidal amide derivatives
    Patent number: 3959299
    Abstract: New compounds of the formula ##EQU1## wherein R.sub.1 and R.sub.2 each is alkyl; R.sub.3 is a nitrogen-containing heterocyclic group; and R.sub.4 is optionally substituted phenyl, are useful as herbicides.
    Type: Grant
    Filed: August 4, 1975
    Date of Patent: May 25, 1976
    Assignee: Shell Oil Company
    Inventors: Eirlys R. Isaac, Peter Kirby