Patents by Inventor Hermann Bierigner

Hermann Bierigner 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).

  • Heterocyclically substituted sulfonylureas, and their use as herbicides or plant growth regulators
    Patent number: 5129941
    Abstract: Sulfonylureas of the formula ##STR1## where A is a bond or a C.sub.1 -C.sub.10 -hydrocarbon radical,R.sup.1 is an optionally unsaturated hydrocarbon radical which is optionally substituted by halogen, optionally unsaturated alkoxy, alkylthio, alkylsulfonyl or alkylsulfinyl, cycloalkyl, optionally substituted phenyl or a heterocycle, or is optionally substituted phenyl, NRR' with R and R' being alkyl, alkoxy or alkylene (cyclic with N),Y is S, SO or SO.sub.2,R.sup.1 is optionally unsaturated alkoxy which is optionally substituted, or is cycloalkoxy, cycloalkenyloxy, cyclopropylmethyloxy, epoxypropyloxy, furfuryloxy, tetrahydrofurfuryloxy or optionally substituted phenoxyalkoxy or phenoxy,R.sup.3 is alkyl which is optionally unsaturated, or is alkoxy,R.sup.4 is optionally substituted pyrimidinyl, pyrimidinylmethyl, pyrimidinyl with a fused-on cyclopentane, oxolane, oxolene, oxane, pyridine or pyrazine ring or purinyl or triazolyl, andZ is O or S,have herbicidal and/or plant-growth-regulatory properties.
    Type: Grant
    Filed: July 17, 1990
    Date of Patent: July 14, 1992
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Heinz-Josef Loher, Lothar Willms, Michael Frey, Klaus Bauer, Hermann Bierigner