Patents by Inventor Kurt H. Pilgram

Kurt H. Pilgram 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-Cyclopyopyl-N-(fluorophenyl)-N-acylureas and their herbidical use
    Patent number: 4313755
    Abstract: Certain N'-cyclopropyl-N-(fluorophenyl)-N-acylureas, useful as selective herbicides.
    Type: Grant
    Filed: February 2, 1981
    Date of Patent: February 2, 1982
    Assignee: Shell Oil Company
    Inventor: Kurt H. Pilgram
  • Spiro-.DELTA..sup.3 -1,2,3-thiadiazolines and a method for the preparation thereof
    Patent number: 4308389
    Abstract: Spiro-.DELTA..sup.3 -1,2,3-thiadiazolines of the formula: ##STR1## wherein R.sub.F represents a perfluoroalkyl group having from 1 to 6 carbon atoms, each X and each Y is independently selected from the class consisting of hydrogen, halogens, lower alkyl, and halogen-substituted lower alkyl, Z is fluorine, chlorine, or bromine, p is an integer from 2 to 6, and n is either 1 or 2; and a method for the preparation of such compounds comprising the reaction of certain acylated perfluorinated aliphatic aldehyde hydrazones with a thionyl halide.
    Type: Grant
    Filed: December 31, 1980
    Date of Patent: December 29, 1981
    Assignee: Shell Oil Company
    Inventors: Kurt H. Pilgram, Richard D. Skiles
  • N'Cyclopropyl-N-(fluorophenyl)-N-hydroxyureas
    Patent number: 4299778
    Abstract: N'-cyclopropyl-N-(2-fluorophenyl)-2-hydroxyurea and its 2,5-difluorophenyl congener, useful as selective herbicides.
    Type: Grant
    Filed: July 21, 1980
    Date of Patent: November 10, 1981
    Assignee: Shell Oil Company
    Inventor: Kurt H. Pilgram
  • Herbicidal (4-substituted-phenylamino)-3-(trifluoromethyl)phenyl)ureas
    Patent number: 4257805
    Abstract: Certain (4-(substituted-phenylamino)-3-(trifluoromethyl)phenyl)ureas, and their use as herbicides.
    Type: Grant
    Filed: January 10, 1980
    Date of Patent: March 24, 1981
    Assignee: Shell Oil Company
    Inventor: Kurt H. Pilgram
  • Certain herbicidal (2-oxo-3-oxazolidinyl)phenylureas
    Patent number: 4226612
    Abstract: Certain N'-(3-halo-4-(oxazolidinyl)phenyl)-N-alkyl-N-alkyl(oxy)ureas, and their use as herbicides.
    Type: Grant
    Filed: July 2, 1979
    Date of Patent: October 7, 1980
    Assignee: Shell Oil Company
    Inventor: Kurt H. Pilgram