Patents by Inventor Thekla Haselwander

Thekla Haselwander 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-(hetero)aryloxy-6-arylpyridines and 2-aryl-4-(hetero)aryloxy-6-arylpyridines and 2-aryl-4-(hetero)aryloxypyrimidines
    Patent number: 6066597
    Abstract: New herbicidal pyridine and pyrimidine derivatives of general formula (I), ##STR1## wherein Z represents a nitrogen atom or a C--H group; A represents an optionally substituted aryl group or an optionally substituted 5- or 6-membered nitrogen-containing heteroaromatic 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: July 27, 1999
    Date of Patent: May 23, 2000
    Assignee: American Cyanamid Company
    Inventors: Axel Kleemann, Helmut Siegfried Baltruschat, Thekla Haselwander
  • Herbicidal 2-(hetero)aryloxy-6-arylpyridines and 2-aryl-4-(hetero) aryloxypyrimidines
    Patent number: 6008161
    Abstract: Herbicidal 2-(hetero)aryloxy-6-arylpyridines and 2-Aryl-4-(hetero)aryloxypyrimidinesNew herbicidal pyridine and pyrimidine derivatives of general formula (1), ##STR1## wherein Z represents a nitrogen atom or a C--H group; A represents an optionally substituted aryl group or an optionally substituted 5- or 6-membered nitrogen-containing heteroaromatic 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.1 or each R.sup.1 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: July 14, 1998
    Date of Patent: December 28, 1999
    Assignee: American Cyanamid Company
    Inventors: Axel Kleemann, Helmut Siegfried Baltruschat, Thekla Haselwander, Thomas Maier, Stefan Scheiblich