Patents by Inventor Rainer Liebl

Rainer Liebl 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).

  • 1,2-disubstituted piperidines, processes for their preparation and their use in plant protection
    Patent number: 4838931
    Abstract: 1,2-Disubstituted piperidines of the general formula I ##STR1## in which X denotes oxygen or sulfur; R denotes alkyl, R.sup.1 and R.sup.2 denote hydrogen, alkyl or benzyl, R.sup.3 denotes hydrogen, (substituted) alkyl, (substituted) benzyl or a radical of the formulae ##STR2## Y and X denote S or O; Z denotes S, O or NR.sup.1 ; R.sup.4 denotes hydrogen, (substituted) alkyl, (substituted) phenyl, (substituted) naphthyl or (substituted) pyridyl, A denotes (substituted) phenyl or (substituted) naphthyl and m denotes 0, 1 or 2, possess advantageous herbicidal properties.
    Type: Grant
    Filed: January 14, 1987
    Date of Patent: June 13, 1989
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Rainer Liebl, Michael Frey, Hilmar Mildenberger, Klaus Bauer, Hermann Bieringer
  • Herbicidal derivatives of imidazolidinone and imidazolidine thione
    Patent number: 4749403
    Abstract: The compounds of formula I ##STR1## in which the substituents X, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, and R.sup.6, are defined hereinbelow. The compounds have advantageous herbicidal properties and are useful, for example, for combating undesired plants.
    Type: Grant
    Filed: February 6, 1987
    Date of Patent: June 7, 1988
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Rainer Liebl, Reinhard Handte, Hilmar Mildenberger, Klaus Bauer, Hermann Bieringer
  • Herbicidal imidazolinones
    Patent number: 4614535
    Abstract: Imidazolinones of the formula ##STR1## in which A denotes N or C--R.sup.4 ; B denotes halogenoalkyl, alkoxymethyl, cyanomethyl or thiocyanatomethyl; X denotes alkyl; and Y denotes alkyl, cycloalkyl, alkenyl, phenyl or benzyl; or X and Y, together with C, denote a spiro-cycloalkyl group; Z denotes H, (substituted) alkyl, alkenyl, propargyl or an alkyl, carboxylic acid ester or sulfonic acid ester group; and R.sup.1 -R.sup.4 denote H, halogen, alkyl, alkoxy, alkoxycarbonyl, halogenoalkyl, NO.sub.2, CN, (substituted) phenoxy or (substituted) phenyl, or in each case two adjacent radicals together denote the radical --CH.dbd.CH--CH--CH--, are active herbicides and growth regulators.
    Type: Grant
    Filed: November 8, 1984
    Date of Patent: September 30, 1986
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Roland Schmierer, Reinhard Handte, Rainer Liebl, Hilmar Mildenberger, Klaus Bauer, Hermann Bieringer, Helmut Burstell
  • Phenoxyalkanoyl derivatives and their use in plant protection
    Patent number: 4564382
    Abstract: Compounds of the formula I ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 independently of one another denote hydrogen, F, Cl, Br or (C.sub.1 -C.sub.4)-alkyl, and R.sup.1 also denotes CF.sub.3, CN, NO.sub.2 or alkoxycarbonyl, A denotes a direct bond, --CH.sub.2 --CH.sub.2 -- or --CH.dbd.CH--, X denotes O, S or N--R.sup.8, R.sup.4 denotes H or alkyl, R.sup.5 and R.sup.6 denote alkyl, R.sup.7 denotes alkyl, (substituted) benzyl and/or (substituted) phenethyl and R.sup.8 denotes H or alkyl or, together with NR.sup.7, denotes a heterocyclic ring, are active herbicides and antidotes.
    Type: Grant
    Filed: November 8, 1984
    Date of Patent: January 14, 1986
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Rainer Liebl, Reinhard Handte, Hilmar Mildenberger, Klaus Bauer, Hermann Bieringer