Patents by Inventor Thekla Hulsen

Thekla Hulsen 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).

  • Herbicidal 2, 6-disubstituted pyridines and 2, 4-disubstituted pyrimidines
    Patent number: 5849758
    Abstract: New herbicidal pyrimidine derivatives of general formula (I), ##STR1## wherein Z represents a nitrogen atom; A represents a substituted aryl group or an optionally substituted pyridyl or pyrazolyl group; n represents an integer from 0 to 2 and R.sup.1 or each R.sup.1 independently represents a hydrogen atom or an optionally substituted alkyl, alkoxy, alkylthio or dialkylamino group; m represents an integer from 0 to 5 and R.sup.2 or each R.sup.2 independently represents a hydrogen or a halogen atom or an optionally substituted alkyl, haloalkyl, haloalkoxy, alkoxy, alkylthio group or a nitro, cyano or a halosulphonyl group; and X represents an oxygen or sulphur atom.
    Type: Grant
    Filed: August 7, 1996
    Date of Patent: December 15, 1998
    Assignee: American Cyanamid Company
    Inventors: Axel Kleemann, Helmut Siegfried Baltruschat, Thekla Hulsen, Thomas Maier, Stefan Scheiblich