Patents by Inventor Barry R. J. Devlin

Barry R. J. Devlin 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).

  • Method for sterilizing male parts of plants
    Patent number: 4755210
    Abstract: 3-Carboxyazetidine or a hydrate, salt or lower alkyl ester thereof is used to sterilize male parts of plants.
    Type: Grant
    Filed: May 31, 1985
    Date of Patent: July 5, 1988
    Assignee: Shell Oil Company
    Inventor: Barry R. J. Devlin
  • Method for sterilizing male parts of plants
    Patent number: 4560401
    Abstract: 3-Substituted-2-carboxyazetidines, their esters and salts are used to sterilize male parts in plants.
    Type: Grant
    Filed: August 15, 1983
    Date of Patent: December 24, 1985
    Assignee: Shell Oil Company
    Inventor: Barry R. J. Devlin
  • Method for sterilizing male parts of plants
    Patent number: 4555260
    Abstract: 3-Carboxyazetidine or a hydrate, salt or lower alkyl ester thereof is used to sterilize male parts of plants.
    Type: Grant
    Filed: August 15, 1983
    Date of Patent: November 26, 1985
    Assignee: Shell Oil Company
    Inventor: Barry R. J. Devlin
  • Process for preparing 3-azabicyclo(3.1.0)hexane-2-carboxylic acid
    Patent number: 4279821
    Abstract: 3-Azabicyclo(3.1.0)hexane-2-carboxylic acid, a plant gametocide, is prepared by effecting reaction between cis 2-aminomethylcyclopropyl-1,1-dimethyl acetal and a cyanide in the presence of a liquid lower-alkanecarboxylic acid; treating the resulting N-alkanoyl-3-azabicyclo(2.1.0)hexane-2-carbonitrile with a strong acid; treating the resulting 3-alkanoyl-3-azabicyclo(3.1.0)hexane-2-carboxylic acid with strong acid to form the desired 3-azabicyclo(3.1.0)hexane-2-carboxylic acid.
    Type: Grant
    Filed: July 7, 1980
    Date of Patent: July 21, 1981
    Assignee: Shell Oil Company
    Inventors: Janet A. Day, Barry R. J. Devlin, Robert J. G. Searle
  • Process for preparing 3-azabicyclo(3.1.0)hexane-2-carboxylic acid
    Patent number: 4255334
    Abstract: 3-Azabicyclo(3.1.0)hexane-2-carboxylic acid, a plant gametocide, is prepared by effecting reaction between cis 2-aminomethylcyclopropyl-1,1-dimethyl acetal and a cyanide in the presence of a liquid lower-alkanecarboxylic acid; treating the resulting N-alkanoyl-3-azabicyclo(2.1.0)hexane-2-carbonitrile with a strong acid; treating the resulting 3-alkanoyl-3-azabicyclo(3.1.0)hexane-2-carboxylic acid with strong acid to form the desired 3-azabicyclo(3.1.0)hexane-2-carboxylic acid.
    Type: Grant
    Filed: June 18, 1979
    Date of Patent: March 10, 1981
    Assignee: Shell Oil Company
    Inventors: Janet A. Day, Barry R. J. Devlin, Robert J. G. Searle
  • 2-Aminomethylcyclopropyl-1,1-dialkylacetals
    Patent number: 4254057
    Abstract: 3-azabicyclo(3.1.0)hexane-2-carboxylic acid, a plant gametocide, is prepared by effecting reaction between cis 2-aminomethylcyclopropyl-1,1-dimethyl acetal and a cyanide in the presence of a liquid lower-alkanecarboxylic acid; treating the resulting N-alkanoyl-3-azabicyclo(2.1.0)hexane-2-carbonitrile with a strong acid; treating the resulting 3-alkanoyl-3-azabicyclo(3.1.0)hexane-2-carboxylic acid with strong acid to form the desired 3-azabicyclo(3.1.0)hexane-2-carboxylic acid.
    Type: Grant
    Filed: January 24, 1980
    Date of Patent: March 3, 1981
    Assignee: Shell Oil Company
    Inventors: Janet A. Day, Barry R. J. Devlin, Robert J. G. Searle
  • 3-Azabicyclo(3.1.0)hexane-2-carbonitrile
    Patent number: 4222936
    Abstract: Certain 3-azabicyclo(3.1.0)hexane-2-carbonitriles, and a method for their preparation.
    Type: Grant
    Filed: April 2, 1979
    Date of Patent: September 16, 1980
    Assignee: Shell Oil Company
    Inventors: Ronald F. Mason, Barry R. J. Devlin
  • 3-Azabicyclo(3.1.0)hexan-4-one-2-carbonitrile
    Patent number: 4217283
    Abstract: 3-Azabicyclo(3.1.0)hexan-4-one-2-carbonitriles, and a method for their synthesis.
    Type: Grant
    Filed: February 23, 1979
    Date of Patent: August 12, 1980
    Assignee: Shell Oil Company
    Inventors: Ronald F. Mason, Barry R. J. Devlin
  • Certain benzotriazole-4,7-dione derivatives
    Patent number: 3952003
    Abstract: Novel 1H-indazole-4,7-diones, benzo(d)isoxazole-4,7-diones, benzo(d)triazole-4,7-diones, and benzimidazole-4,7-diones substituted in the 5- and 6- positions, are used for the control of weeds.
    Type: Grant
    Filed: September 4, 1973
    Date of Patent: April 20, 1976
    Assignee: Shell Oil Company
    Inventors: Ian D. Entwistle, Peter J. Williams, Barry R. J. Devlin