Patents Examined by Patricica L. Morris
  • Substituted spiroheterocyclic 1H-3-arylpyrrolidine-2,4-dione derivatives, methods of preparing them and their use as pest-control agents
    Patent number: 6479489
    Abstract: Pesticidal and herbicidal substituted spirocyclic 1-H-3-aryl-pyrrolidine-2,4-dione derivatives of the formula (I) is which A and B together with the carbon atom to which they are bonded represent an unsubstituted or substituted 5-6-membered cycle which is interrupted by at least one hetero atom, n represents a number 0, 1, 2, or 3, G represents hydrogen (a) or the groups E represents a metal ion equivalent or an ammonium ion, and the other radicals have various definitions.
    Type: Grant
    Filed: June 3, 1999
    Date of Patent: November 12, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Reiner Fischer, Thomas Bretschneider, Bernd-Wieland Krüger, Hans-Joachim Santel, Markus Dollinger, Christoph Erdelen, Ulrike Wachendorff-Neumann