Patents by Inventor Martina Otten

Martina Otten 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).

  • Patent number: 6372693
    Abstract: The invention relates to 2-(3-alkenylbenzoyl)cyclohexane-1,3-diones of the formula I where the variables have the following meanings: R1, R2 are hydrogen, nitro, halogen, cyano, thiocyanato, alkyl, haloalkyl, alkoxyalkyl, alkenyl, alkynyl, —OR6, —OCOR7, —OSO2R7, —SH, —S(O)nR8, —SO2OR6, —SO2NR6R9, —NR9SO2R7 or —NR9COR7; R3 is hydrogen, halogen, alkyl, haloalkyl, alkoxy, alkenyl, alkynyl; R4, R5 are hydrogen, nitro, halogen, cyano, thiocyanato, alkyl, haloalkyl, cycloalkyl, alkenyl, cycloalkenyl, alkynyl, alkoxy, alkylthio, haloalkoxy, —COR10, —CO2R10, —COSR10, —CONR10R11, —C(R12)═NR13, —PO(OR10)(OR11); unsubstituted or substituted alkyl, heterocyclyl, heterocyclylalkyl, phenyl, phenylalkyl, hetaryl or hetarylalkyl; or R4 and R5 together form an alkanediyl chain which can be substituted and/or can be interrupted by a hetero atom; Q is an unsubstituted or substituted cyclohexane-1,3-dione ring wh
    Type: Grant
    Filed: November 2, 1999
    Date of Patent: April 16, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Ernst Baumann, Wolfgang von Deyn, Stefan Engel, Regina Luise Hill, Uwe Kardorff, Guido Mayer, Martina Otten, Michael Rack, Joachim Rheinheimer, Matthias Witschel, Karl-Otto Westphalen, Ulf Misslitz, Helmut Walter
  • Patent number: 6352959
    Abstract: Thiochromanoylpyrazolone derivatives of the formula I where: A is an unsubstituted or substituted, saturated or unsaturated alkyl chain; R1 is cyano, thiocyanato, nitro, OR4, SR5, SOR6, S02R6, ONR6NR7, ON═CR6R8, NR9R10, P(O)R11R12, P(S)R11R12, COR, CO2R6, unsubstituted or substituted phenyl or heterocyclyl; R2 is alkyl, haloalkyl, alkoxy or haloalkoxy; R3 is hydrogen, alkyl or halogen; X is oxygen, sulfur, S═O, S(═O)2, CR13R14, C═O or C═NR15; m is 0, 1 or 2; n is 0, 1, 2, 3 or 4; R16 is substituted pyrazol-4-yl-carbonyl or substituted (4,5-dihydro-5-oxo-pyrazol-4-yl)methylidene; and their agriculturally useful salts; Processes for preparing the thiochromanoylpyrazolone derivatives, compositions comprising them, and the use of these derivatives or of the compositions comprising them for controlling undesirable plants are described.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: March 5, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Langemann, Ernst Baumann, Wolfgang von Deyn, Steffen Kudis, Guido Mayer, Ulf Misslitz, Ulf Neidlein, Matthias Witschel, Norbert Götz, Martina Otten, Karl-Otto Westphalen, Helmut Walter
  • Publication number: 20020025910
    Abstract: Benzoyl derivatives of the formula I 1
    Type: Application
    Filed: December 27, 2000
    Publication date: February 28, 2002
    Inventors: Wolfgang von Deyn, Regina Luise Hill, Uwe Kardorff, Ernst Baumann, Stefan Engel, Guido Mayer, Matthias Witschel, Michael Rack, Norbert Gotz, Joachim Gebhardt, Ulf MiBlitz, Helmut Walter, Karl-Otto Westphalen, Martina Otten, Joachim Rheinheimer
  • Patent number: 6326333
    Abstract: Pyrazolyldioxothiochromanoyl derivatives of the formula I where: X is oxygen, sulfur, S═O, S(═O)2, CR4R5, C═O or C═NR6, R1 is hydrogen, nitro, halogen, cyano, alkyl, haloalkyl, alkoxy, haloalkoxy, alkylthio, haloalkylthio, alkylsulfinyl, haloalkylsulfinyl, alkylsulfonyl, haloalkylsulfonyl, aminosulfonyl with or without substitution or sulfonylamino with or without substitution; R2 is alkyl, haloalkyl, alkoxy or haloalkoxy; R3 is hydrogen, alkyl or halogen; R4, R5 are hydrogen, nitro, halogen, cyano, alkyl, haloalkyl, alkoxy, haloalkoxy, alkylthio, haloalkylthio, alkylsulfinyl, haloalkylsulfinyl, alkylsulfonyl, haloalkylsulfonyl or substituted amino; or R4 and R5 together form a chain which may be substituted and/or interrupted by oxygen or sulfur; or a methylidene group with or without substitution; l is 0 to 4; R7 is substituted pyrazol-4-ylcarbonyl or substituted pyrazol-4-ylmethylidene; and agriculturally useful salts thereof.
    Type: Grant
    Filed: November 8, 2000
    Date of Patent: December 4, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Matthias Witschel, Klaus Langemann, Wolfgang von Deyn, Ulf Misslitz, Ernst Baumann, Stefan Engel, Guido Mayer, Ulf Neidlein, Oliver Wagner, Martina Otten, Karl-Otto Westphalen, Helmut Walter
  • Patent number: 6310245
    Abstract: The invention relates to 2-benzoylcyclohexane-1,3-diones of the formula I where R1, R2 are hydrogen, nitro, halogen, cyano, thiocyanato, alkyl, haloalkyl, alkoxyalkyl, alkenyl, alkynyl, —OR5, —OCOR6, —OSO2R6, —SH, —S(O)nR7, —SO2OR5, —SO2NR5R8, —NR8SO2R6 or —NR8COR6; R3 is hydrogen, alkyl, haloalkyl, alkenyl or alkynyl; R4 is hydrogen, unsubstituted or substituted alkyl, cycloalkyl, alkenyl, cycloalkenyl, alkynyl, —COR9, —CO2R9, —COSR9 or —CONR8R9; X is oxygen or sulfur; Z is oxygen or NR8; m is 0 or 1; n is 0, 1 or 2; R5 is hydrogen, alkyl, haloalkyl, alkoxyalkyl, alkenyl or alkynyl; R6 is alkyl or haloalkyl; R7 is alkyl, haloalkyl, alkoxyalkyl, alkenyl or alkynyl; R8 is hydrogen or alkyl; R9 is alkyl, alkenyl, alkynyl, phenyl or benzyl; R10 is alkyl, haloalkyl, alkenyl or alkynyl; Q is an unsubstituted or substituted cyclohexane-1,3-dione ring which is linked in the 2-position; where m is 1 if R3 is
    Type: Grant
    Filed: June 23, 1999
    Date of Patent: October 30, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Uwe Kardorff, Regina Luise Hill, Michael Rack, Wolfgang von Deyn, Stefan Engel, Martina Otten, Matthias Witschel, Ernst Baumann, Joachim Rheinheimer, Guido Mayer, Ulf Misslitz, Karl-Otto Westphalen, Helmut Walter
  • Patent number: 6291682
    Abstract: Pyrazol-4-ylbenzoyl derivatives where the substituents L, M, X, Y and n have the meanings given in claim 1 and Q is a pyrazole ring, linked in the 4-position, of the formula II where R15 is C1-C4-alkyl, R16 is hydrogen, C1-C4-alkyl or C1-C4-haloalkyl and R17 is hydrogen, C1-C4-alkylsulfonyl, phenylsulfonyl or alkylphenylsulfonyl, where, in the event that Y=C═O, X is other than NR23, agriculturally useful salts, a process for their preparation, and their use as herbicides.
    Type: Grant
    Filed: February 24, 1998
    Date of Patent: September 18, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Martina Otten, Wolfgang von Deyn, Stefan Engel, Regina Luise Hill, Uwe Kardorff, Marcus Vossen, Peter Plath, Norbert Götz, Helmut Walter, Karl-Otto Westphalen, Ulf Misslitz
  • Patent number: 6277790
    Abstract: Tetrazolinonecarboxamides of formula I wherein Het is oxetan-3-yl, thietan-3-yl, tetrahydrofuran-3-yl, furan-3-yl, tetrahydrothiophen-3-yl, thiophen-3-yl, tetrahydro-2H-pyran-3-yl, tetrahydro-2H-thiopyran-3-yl, tetrahydro-2H-pyran-4-yl or tetrahydro-2H-thiopyran-4-yl, in each case with or without substitution; R1 is optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, phenyl, or 3- to 7-membered heterocyclyl; R2 is hydrogen, alkyl, haloalkyl, alkenyl, haloalkenyl, alkynyl, or is optionally substituted cycloalkyl, cycloalkylalkyl, phenyl, phenylalkyl, 3- to 7-membered heterocyclyl, or 3- to 7-membered heterocyclylalkyl, their preparation and herbicidal compositions comprising them.
    Type: Grant
    Filed: February 1, 2000
    Date of Patent: August 21, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Cyrill Zagar, Gerhard Hamprecht, Markus Menges, Olaf Menke, Robert Reinhard, Peter Schäfer, Karl-Otto Westphalen, Martina Otten, Helmut Walter
  • Patent number: 6271179
    Abstract: Benzylidenepyrazolones of the formula I, Useful as herbicides.
    Type: Grant
    Filed: May 11, 2000
    Date of Patent: August 7, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Joachim Rheinheimer, Matthias Witschel, Stefan Engel, Ernst Baumann, Wolfgang von Deyn, Regina Luise Hill, Guido Mayer, Ulf Misslitz, Oliver Wagner, Martina Otten, Karl-Otto Westphalen, Helmut Walter
  • Patent number: 6262074
    Abstract: Hetaroyl derivatives of the formula I where: R1 and R2 are each hydrogen, nitro, halogen, cyano, thiocyanato, hydroxyl, mercapto, C1-C6-alkyl, C1-C6-alkoxy, C1-C6-alkylthio, C1-C6-alkylsulfinyl, C1-C6-alkylsulfonyl or C1-C6-alkoxysulfonyl, where the last 6 radicals may be substituted and/or functionalized; phenyl, phenoxy, phenylthio, phenylsulfinyl or phenylsulfonyl, where the last 5 radicals may be substituted; Z is an unsubstituted or substituted four-membered unsaturated, partially or fully saturated chain consisting of three carbons and one nitrogen; Q is unsubstituted or substituted hydroxypyrazole linked at position 4; and their agriculturally useful salts. A process for preparing the hetaroyl derivatives, compositions comprising them, and the use of these derivatives or these compositions comprising them for controlling undesirable plants.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: July 17, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Martina Otten, Norbert Götz, Wolfgang von Deyn, Stefan Engel, Uwe Kardorff, Michael Rack, Regina Luise Hill, Peter Plath, Matthias Witschel, Karl-Otto Westphalen, Helmut Walter, Ulf Misslitz
  • Patent number: 6225313
    Abstract: Substituted 2-phenyl-3(2H)-pyridazinones I and salts thereof, where n=0, 1, 2; R1=C1-C4-alkyl, C1-C4-haloalkyl; R2=H, halogen; R3=halogen, CN; R4=H, NO2, CN, CHO, NH—OH, C1-C4-alkyl, C1-C4-halogenalkyl, —OR5, —CH═N—OR6, —CH═C(R7)—CO—OR8, —CO—OR9, C1-C6-alkyl-SO2—NH, di(C1-C6-alkylsulfonyl)amino or R5=C1-C6-alkyl, C3-C6-alkenyl, C3-C6-alkynyl, (C1-C6-alkoxy)carbonyl-C1-C4-alkyl, (C3-C6-alkenyloxy)carbonyl-C1-C4-alkyl, (C3-C6-alkynyloxy)carbonyl-C1-C4-alkyl, C1-C4-alkoxy(C1-C4-alkoxy)carbonyl-C1-C4-alkyl; R6=H, C1-C4-alkyl, hydroxycarbonyl-C1-C4-alkyl, (C1-C4-alkoxy)carbonyl-C1-C4-alkyl; R7=H, halogen, C1-C4-alkyl; R8=H, C1-C6-alkyl; R9=H, C1-C6-alkyl, C3-C6-alkenyl, C3-C6-alkynyl, C1-C4-alkoxy-C1-C4-alkoxy, hydroxycarbonyl-C1-C4-alkyl, (C1-C6-alkoxy)carbonyl-C1-C4-alkyl, (C3-C6-alkenyloxy)carbonyl-C1-C4-alkyl, (C3-C6-alkynyloxy)car
    Type: Grant
    Filed: March 16, 2000
    Date of Patent: May 1, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Schäfer, Gerhard Hamprecht, Markus Menges, Olaf Menke, Michael Rack, Robert Reinhard, Cyrill Zagar, Peter Münster, Karl-Otto Westphalen, Martina Otten, Helmut Walter
  • Patent number: 6207618
    Abstract: Substituted 4-benzoylpyrazole of the formula I where: Q is a pyrazole of the formula II X1 is a straight-chain or branched C1-C6-alkylene, a C2-C6-alkenylene or a C2-C6-alkynylene chain which is interrupted by a hetero atom selected from the group consisting of: oxygen and sulfur, Het is a three- to six-membered partially or fully saturated heterocyclic group or a three- to six-membered heteroaromatic group having up to three hetero atoms selected from the following three groups: nitrogen, oxygen in combination with at least one nitrogen or sulfur in combination with at least one nitrogen; and agriculturally useful salts thereof, processes and intermediates for preparing compounds of the formula I, compositions comprising them and the use of the compounds of the formula I and of compositions comprising them for controlling harmful plants are described.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: March 27, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Stefan Engel, Joachim Rheinheimer, Ernst Baumann, Wolfgang von Deyn, Regina Luise Hill, Guido Mayer, Ulf Misslitz, Oliver Wagner, Matthias Witschel, Martina Otten, Helmut Walter, Karl-Otto Westphalen
  • Patent number: 6165944
    Abstract: 4-(3-Heterocyclyl-1-benzoyl)pyrazoles of the formula I ##STR1## where: R.sup.1 and R.sup.3 are each hydrogen, nitro, halogen, cyano, alkyl, haloalkyl, alkoxy, haloalkoxy, alkylthio, haloalkylthio, alkylsulfinyl, haloalkylsulfinyl, alkylsulfonyl, haloalkylsulfonyl, aminosulfonyl, N-alkylaminosulfonyl, N,N-dialkyl)aminosulfonyl, N-alkylsulfonylamino, N-haloalkylsulfonylamino, N-alkyl-N-alkylsulfonylamino or N-alkyl-N-haloalkylsulfonylamino;R.sup.2 is a 5- or 6-membered heterocyclyl radical with or without substitution which comprises 1 to 4 identical or different hetero atoms from the following group: oxygen, sulfur or nitrogen;R.sup.4 is hydrogen, halogen or alkyl;R.sup.5 is substituted pyrazole which is attached in position 4;and agriculturally useful salts thereof; processes for preparing the 4-(3-heterocyclyl-1-benzoyl)pyrazoles; compositions comprising them; and the use of these derivatives or these compositions comprising them for controlling undesirable plants.
    Type: Grant
    Filed: June 16, 1998
    Date of Patent: December 26, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang von Deyn, Regina Luise Hill, Ernst Baumann, Stefan Engel, Guido Mayer, Joachim Rheinheimer, Matthias Witschel, Ulf Misslitz, Oliver Wagner, Martina Otten, Helmut Walter, Karl-Otto Westphalen
  • Patent number: 6165943
    Abstract: Thiazolimine derivatives of the formula I ##STR1## where: X and Y independently of one another are each hydrogen, halogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -haloalkyl;Z is hydrogen; C.sub.l -C.sub.8 -alkyl, C.sub.2 -C.sub.8 -alkenyl, C.sub.2 -C.sub.8 -alkynyl, C.sub.1 -C.sub.8 -alkoxy, C.sub.1 -C.sub.8 -alkylthio, it being possible for these groups to be substituted by one to five halogen or C.sub.1 -C.sub.4 -alkoxy; aryl, hetaryl, benzyl, it being possible for these groups to be substituted by C.sub.l -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.l -C.sub.4 -haloalkyl, C.sub.1 -C.sub.4 -haloalkoxy, halogen, nitro or cyano; or one of the groups below: ##STR2## R.sup.1 and R.sup.2 are each hydrogen, halogen; C.sub.1 -C.sub.4 -alkyl, C.sub.2 -C.sub.4 -alkenyl, C.sub.2 -C.sub.4 -alkynyl, it being possible for these groups to be substituted by one to five halogens or by C.sub.1 -C.sub.4 -alkoxy;n is 1 or 2;m is 0, 1 or 2R.sup.3 -R.sup.
    Type: Grant
    Filed: September 21, 1999
    Date of Patent: December 26, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Guido Mayer, Martina Otten, Uwe Kardorff, Ernst Baumann, Wolfgang von Deyn, Stefan Engel, Regina Luise Hill, Joachim Rheinheimer, Matthias Witschel, Roland Gotz, Michael Rack, Karl-Otto Westphalen, Ulf Misslitz, Helmut Walter
  • Patent number: 6156702
    Abstract: 4-Benzoylpyrazoles of the formula I ##STR1## useful for controlling harmful plants, are disclosed.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: December 5, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Stefan Engel, Joachim Rheinheimer, Ernst Baumann, Wolfgang von Deyn, Regina Luise Hill, Guido Mayer, Ulf Misslitz, Oliver Wagner, Matthias Witschel, Martina Otten, Helmut Walter, Karl-Otto Westphalen
  • Patent number: 6153759
    Abstract: Heterocyclic substituted benzoyl derivatives of the formula ##STR1## where Z is a 5-membered or 6-membered heterocyclic, saturated or unsaturated radical containing one to three hetero atoms selected from the group consisting of oxygen, sulfur and nitrogen, useful as intermediates for herbicidal compounds.
    Type: Grant
    Filed: January 7, 1999
    Date of Patent: November 28, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang von Deyn, Regina Luise Hill, Uwe Kardorff, Stefan Engel, Martina Otten, Marcus Vossen, Peter Plath, Harald Rang, Albrecht Harreus, Franz Rohl, Helmut Walter, Karl-Otto Westphalen, Ulf Misslitz
  • Patent number: 6143696
    Abstract: 4-(3-Alkenylbenzoyl)pyrazoles of the formula I ##STR1## and agriculturally useful salts thereof; processes for preparing the compounds of the formula I; compositions comprising them; and the use of these derivatives or of compositions comprising them for controlling undesirable plants.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: November 7, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Ernst Baumann, Wolfgang von Deyn, Stefan Engel, Regina Luise Hill, Uwe Kardorff, Guido Mayer, Martina Otten, Michael Rack, Joachim Rheinheimer, Matthias Witschel, Karl-Otto Westphalen, Ulf Misslitz, Helmut Walter
  • Patent number: 6140272
    Abstract: 4-Benzoylpyrazoles of the formula I where:A is a group of the formula IIIa, IIIb or IV ##STR1## Q is a pyrazole of the formula II, ##STR2## useful as herbicides.
    Type: Grant
    Filed: November 2, 1999
    Date of Patent: October 31, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Stefan Engel, Ernst Baumann, Wolfgang von Deyn, Regina Luise Hill, Uwe Kardorff, Guido Mayer, Martina Otten, Joachim Rheinheimer, Oliver Wagner, Matthias Witschel, Ulf Misslitz, Helmut Walter, Karl-Otto Westphalen
  • Patent number: 6140273
    Abstract: 2-Benzoylcyclohexane-1,3-diones of the formula I: ##STR1## where: R.sup.1 and R.sup.2 are each hydrogen, mercapto, nitro, halogen, cyano, thiocyanato, C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -haloalkyl, C.sub.1 -C.sub.6 -alkoxy, C.sub.1 -C.sub.6 -alkyl, C.sub.2 -C.sub.6 -alkenyl, C.sub.2 -C.sub.6 -alkynyl, --OR.sup.10, --OCOR.sup.10, --OSO.sub.2 R.sup.10, --S(O).sub.n R.sup.10, --SO.sub.2 OR.sup.10, --SO.sub.2 NR.sup.3 R.sup.10, --NR.sup.10 SO.sub.2 R.sup.10 or --NR.sup.10 COR;Q is a cyclohexane-1,3-dione ring with or without substitution, which is attached in position 2;A is a group of the formula IIa, IIb or III: ##STR2## where the substituents are as defined in claim 1, and agriculturally useful salts thereof are described.
    Type: Grant
    Filed: November 2, 1999
    Date of Patent: October 31, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Stefan Engel, Ernst Baumann, Wolfgang von Deyn, Regina Luise Hill, Uwe Kardorff, Guido Mayer, Martina Otten, Joachim Rheinheimer, Oliver Wagner, Matthias Witschel, Ulf Misslitz, Helmut Walter, Karl-Otto Westphalen
  • Patent number: 6083879
    Abstract: 4-Benzoylisothiazoles of the formula 1 ##STR1## wherein x is oxygen or sulfur;R.sup.1 is hydrogen, alkyl, alkenyl, alkynyl; or is optionally substituted alkoxycarbonyl, aryl, heterocyclyl or hetaryl;R.sup.2 is hydrogen, halogen, cyano, nitro, alkylsulfonyl or alkoxycarbonyl; or is optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, aryl, aryloxy, arylthio, alkylamino, arylamino, hetaryl or heterocyclyl;R.sup.3 is optionally substituted alkyl, cycloalkyl or aryl, or their salts, their manufacture and herbicidal compositions containing them.
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: July 4, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Stefan Engel, Wolfgang von Deyn, Regina Luise Hill, Uwe Kardorff, Martina Otten, Peter Plath, Marcus Vossen, Ulf Misslitz, Helmut Walter, Karl-Otto Westphalen
  • Patent number: 6083880
    Abstract: Saccharin-5-carbonylcyclohexane-1,3,5-trione derivatives of the formula I ##STR1## where: L is C.sub.1 -C.sub.3 -alkyl or C.sub.1 -C.sub.3 -alkoxy;Z is C.sub.1 -C.sub.4 -alkyl, C.sub.3 -C.sub.8 -cycloalkyl, C.sub.3 -C.sub.6 -alkenyl, C.sub.3 -C.sub.5 -alkynyl, benzyl or phenyl, the phenyl rings in each case being unsubstituted or mono- or polysubstituted by C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.3 -alkoxy or halogen;M is hydrogen, C.sub.1 -C.sub.3 -alkyl, C.sub.1 -C.sub.3 -alkoxy, fluorine, chlorine, cyano, nitro or trifluoromethyl;R.sup.1, R.sup.2, R.sup.3, R.sup.4 are each C.sub.1 -C.sub.4 -alkyl;and agriculturally useful salts of compound I.
    Type: Grant
    Filed: September 1, 1999
    Date of Patent: July 4, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Walter, Peter Plath, Uwe Kardorff, Matthias Witschel, Regina Luise Hill, Wolfgang von Deyn, Stefan Engel, Martina Otten, Ulf Misslitz, Karl-Otto Westphalen