Patents by Inventor Hans Jurgen Nestler

Hans Jurgen Nestler 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).

  • Optically active D-pyridyloxy phenoxy propionate herbicides
    Patent number: 5712226
    Abstract: Opticalls active enantiomers of the formula I ##STR1## where R is a group of the formulae ##STR2## R.sub.1 and R.sub.2, among others, are halogen or CF.sub.3 and Z is a carboxyl, carboxylate, carboxylic acid ester, thioester, carbonamide, carboxylic acid anilide, carbohydrazide or thioamide group, are interesting herbicides the effect of which is considerably superior to that of the optically inactive racemates.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: January 27, 1998
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hans Jurgen Nestler, Gerhard Horlein, Reinhard Handte, Hermann Bieringer, Friedhelm Schwerdtle, Peter Langeluddeke, Peter Frisch
  • 4-Stilbenyl-5-cyano-1,2,3-triazoles
    Patent number: 4001221
    Abstract: Compounds of the formula (I) ##STR1## in which R is hydrogen, or lower alkyl, which may be substituted by phenyl, hydroxy, lower carbalkoxy or cyano, X is hydrogen, chlorine, methyl, methoxy, cyano or lower carbalkoxy, n is 1 to 3, and A is an aromatic carboxylic group or an aromatic hetero-cyclic 5- or 6-membered group as well as their N-alkylated quaternary reaction products. These compounds are useful as optical brighteners for lacquers, natural or synthetic fibers and films, foils or other shaped forms made therefrom.
    Type: Grant
    Filed: September 12, 1975
    Date of Patent: January 4, 1977
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Dieter Gunther, Hans Jurgen Nestler, Gunter Rosch, Erich Schinzel