Patents by Inventor Hartmut Ahrens

Hartmut Ahrens 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).

  • 4-(3-alkylthiobenzoyl)pyrazoles and their use as herbicides
    Patent number: 8288319
    Abstract: 4-(3-Alkylthiobenzoyl)pyrazoles of the formula (I) are described as herbicides. In this formula (I), X, Y, R1, R2, R3 and R4 represent radicals such as hydrogen, organic radicals such as alkyl, and other radicals such as halogen.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: October 16, 2012
    Assignee: Bayer Cropscience AG
    Inventors: Hartmut Ahrens, Andreas Almsick, Jan Dittgen, Christopher Hugh Rosinger, Isolde Häuser-Hahn, Stefan Lehr, Dieter Feucht
  • NOVEL SUBSTITUTED PICOLINIC ACIDS, SALTS AND ACID DERIVATIVES THEREOF, AND USE THEREOF AS HERBICIDES
    Publication number: 20120157314
    Abstract: The present invention relates to novel, herbicidally active picolinic acid derivatives of the formula (I) and to processes for preparation thereof. The present invention further provides for the use thereof as a herbicide, especially as a herbicide for selective control of weed plants in useful plant crops, and as a plant growth regulator alone or in combination with safeners and/or in a mixture with other herbicides.
    Type: Application
    Filed: October 21, 2011
    Publication date: June 21, 2012
    Applicant: BAYER CROPSCIENCE AG
    Inventors: Hartmut AHRENS, Marco BRÜNJES, Hansjörg DIETRICH, Elmar GATZWEILER, Isolde HÄUSER-HAHN, Stefan LEHR, Dirk SCHMUTZLER
  • 2-(3-alkylthiobenzoyl)cyclohexanediones and their use as herbicides
    Patent number: 8193121
    Abstract: 2-(3-Alkylthiobenzoyl)cyclohexanediones of the formula (I) are described as herbicides. In this formula (I), X, Y, R1 to R8 represent radicals such as hydrogen, organic radicals such as alkyl and alkoxy.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: June 5, 2012
    Assignee: Bayer Cropscience AG
    Inventors: Hartmut Ahrens, Andreas Almsick, Jan Dittgen, Christopher Hugh Rosinger, Isolde Häuser-Hahn, Stefan Lehr, Dieter Feucht
  • 4-(3-aminobenzoyl)-5-cyclopropylisoxazoles effective as herbicides
    Patent number: 8188009
    Abstract: 4-(3-Aminobenzoyl)-5-cyclopropylisoxazoles of the formula (I) are described as herbicides. In this formula (I), A, X, Y and Z are radicals such as hydrogen, organic radicals such as alkyl, and other radicals such as halogen.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: May 29, 2012
    Assignee: Bayer Cropscience AG
    Inventors: Heinz Kehne, Andreas Almsick, Hartmut Ahrens, Dieter Feucht, Ines Heinemann, Jan Dittgen, Martin Jeffrey Hills, Stefan Lehr, Christopher Hugh Rosinger
  • Amino-1,3,5-triazines N-substituted with chiral bicyclic radicals, process for their preparation, compositions thereof, and their use as herbicides and plant growth regulators
    Publication number: 20120101287
    Abstract: The invention related to an optically active compound of formula (I) or a salt thereof: wherein the various symbols are as defined in the description, to processes for their preparation, to compositions thereof, and to their use as herbicides or plant growth regulators. The invention also relates to novel intermediates of formula (III), (V) and (XIII) as defined in the description.
    Type: Application
    Filed: December 28, 2011
    Publication date: April 26, 2012
    Applicant: Bayer CropScience AG
    Inventors: Hartmut Ahrens, Hansjöerg Dietrich, Klemens Minn, Thomas Auler, Hermann Bieringer, Martin Hills, Heinz Kehne, Hubert Menne
  • Substituted 2,4-diamino-1,3,5-triazines, processes for their use as herbicides and crop growth regulators
    Patent number: 8153788
    Abstract: Compounds of the formula (I) or salts thereof, in which in which R1 is an optionally substituted amino group or analogous group, and R2 to R7 are each as described herein, are suitable as herbicides and crop growth regulators. The compounds (I) can be prepared by the processes described, via intermediates including novel intermediates for example of the formula (III).
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: April 10, 2012
    Inventors: Hartmut Ahrens, Hansjörg Dietrich, Thomas Auler, Martin Hills, Heinz Kehne, Dieter Feucht, Stefan Herrmann, Kristian Kather, Stefan Lehr
  • N-(TETRAZOL-5-YL)- AND N-(TRIAZOL-5-YL)ARYLCARBOXAMIDES AND THEIR USE AS HERBICIDES
    Publication number: 20120058892
    Abstract: N-(Tetrazol-5-yl)- and N-(triazol-5-yl)arylcarboxamides of the formula (I) are described as herbicides. In this formula (I), X, Y, Z and R represent radicals such as hydrogen, organic radicals such as alkyl, and other radicals such as halogen. A and B represent N and CY.
    Type: Application
    Filed: August 31, 2011
    Publication date: March 8, 2012
    Applicant: BAYER CROPSCIENCE AG
    Inventors: Ralf Braun, Arnim Köhn, Andreas Almsick, Hartmut Ahrens, Simon Dörner-Rieping, Lothar Willms, Isolde Häuser-Hahn, Ines Heinemann, Elmar Gatzweiler, Christopher Hugh Rosinger
  • Herbicidally active 4-(3-alkylsulfinylbenzoyl)pyrazoles
    Patent number: 8114816
    Abstract: 4-(3-Alkylsulfinylbenzoyl)pyrazoles of the formula (I) are described as herbicides. In this formula (I), R1 to R4, X and Y are radicals such as hydrogen, organic radicals such as alkyl, and other radicals such as halogen.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: February 14, 2012
    Assignee: Bayer Cropscience AG
    Inventors: Hartmut Ahrens, Andreas Almsick, Jan Dittgen, Simon Dörner, Dieter Feucht, Isolde Häuser-Hahn, Stefan Lehr, Christopher Hugh Rosinger
  • Amino-1,3,5-triazines N-substituted with chiral bicyclic radicals, process for their preparation, compositions thereof, and their use as herbicides and plant growth regulators
    Patent number: 8114991
    Abstract: Amino-1,3,5-triazines N-substituted with chiral bicyclic radicals, process for their preparation, compositions thereof, and their use as herbicides and plant growth regulators. The invention relates to an optically active compound of formula (I) or a salt thereof: wherein the various symbols are as defined in the description, to processes for their preparation, to compositions thereof, and to their use as herbicides or plant growth regulators. The invention also relates to novel intermediates of formula (III), (V) and (XIII) as defined in the description.
    Type: Grant
    Filed: February 3, 2004
    Date of Patent: February 14, 2012
    Assignee: Bayer Cropscience AG
    Inventors: Hartmut Ahrens, Hansjörg Dietrich, Klemens Minn, Thomas Auler, Hermann Bieringer, Martin Hills, Heinz Kehne, Hubert Menne
  • (4-HALOALKYL-3-THIOBENZOYL)CYCLOHEXANEDIONES AND USE THEREOF AS HERBICIDES
    Publication number: 20120021904
    Abstract: A description is given of (4-haloalkyl-3-thiobenzoyl)cyclohexanediones of the formula (I) and of their use as herbicides. In this formula (I), X, Y, R1, R2, R3, and R4 are radicals such as hydrogen and organic radicals such as alkyl. A and Z are oxygen or alkylene.
    Type: Application
    Filed: July 20, 2011
    Publication date: January 26, 2012
    Applicant: BAYER CROPSCIENCE AG
    Inventors: Hartmut AHRENS, Dieter FEUCHT, Elmar GATZWEILER, Isolde HAUSER-HAHN, Christopher Hugh ROSINGER
  • (4-TRIFLUOROMETHYL-3-THIOBENZOYL)CYCLOHEXANEDIONES AND USE THEREOF AS HERBICIDES
    Publication number: 20120021902
    Abstract: (4-Trifluoromethyl-3-thiobenzoyl)cyclohexanediones and use thereof as herbicides A description is given of (4-trifluoromethyl-3-thiobenzoyl)cyclohexanediones of the formula (I) and of their use as herbicides. In this formula (I), X, R1, R2, R3, and R4 are radicals such as hydrogen and organic radicals such as alkyl. A and Z are oxygen or alkylene.
    Type: Application
    Filed: July 19, 2011
    Publication date: January 26, 2012
    Applicant: BAYER CROPSCIENCE AG
    Inventors: Hartmut AHRENS, Andreas VAN ALMSICK, Elmar GATZWEILER, Dieter FEUCHT, Isolde HÄUSER-HAHN, Stefan LEHR, Christopher Hugh ROSINGER
  • 4-(4-HALOALKYL-3-THIOBENZOYL)PYRAZOLES AND USE THEREOF AS HERBICIDES
    Publication number: 20120021903
    Abstract: A description is given of 4-(4-haloalkyl-3-thiobenzoyl)pyrazoles of the formula (I) and of their use as herbicides. In this formula (I), X, Y, R1, R2, R3, and R4 are radicals such as hydrogen and organic radicals such as alkyl.
    Type: Application
    Filed: July 20, 2011
    Publication date: January 26, 2012
    Applicant: BAYER CROPSCIENCE AG
    Inventors: HARTMUT AHRENS, ELMAR GATZWEILER, ISOLDE HÄEUSER-HAHN, CHRISTOPHER HUGH ROSINGER
  • N-(1,2,5-OXADIAZOL-3-YL)BENZAMIDES AND THEIR USE AS HERBICIDES
    Publication number: 20110152084
    Abstract: There are described N-(1,2,5-oxadiazol-3-yl)benzamides of the general formula (I) as herbicides. In this formula (I), X, Y, Z and R are radicals such as hydrogen, organic radicals such as alkyl, and other radicals such as halogen.
    Type: Application
    Filed: September 23, 2010
    Publication date: June 23, 2011
    Applicant: BAYER CROPSCIENCE AG
    Inventors: Arnim Köhn, Jörg Tiebes, Andreas Almsick, Hartmut Ahrens, Ines Heinemann, Rralf Braun, Monika H. Schmitt, Lothar Willms, Dieter Feucht, Christopher Hugh Rosinger, Isolde Häuser-Hahn, Mark Drewes, Simon Dörner-Rieping, Jan Dittgen, Martin Adamczewski
  • 3-cyclopropyl-4-(3-thiobenzoyl) pyrazoles and their use as herbicides
    Patent number: 7943551
    Abstract: What is described are 3-cyclopropyl-4-(3-thiobenzoyl)pyrazoles of the general formula (I) and their use as herbicides In this formula (I), R1, R2, R3, X and Y are radicals such as hydrogen and organic radicals, such as alkyl. R4 is hydrogen or a protective group, such as tosyl.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: May 17, 2011
    Assignee: Bayer Cropscience AG
    Inventors: Hartmut Ahrens, Andreas van Almsick, Stefan Lehr, Monika Schmitt, Jan Dittgen, Dieter Feucht, Martin Hills, Heinz Kehne, Christopher Rosinger
  • 4-(4-trifluoromethyl-3-thiobenzoyl)pyrazoles and their use as herbicides
    Patent number: 7932211
    Abstract: What is described are 4-(4-trifluoromethyl-3-thiobenzoyl)pyrazoles of the general formula (I) and their use as herbicides. In this formula (I), R1, R2, R3 and R4 are radicals such as hydrogen and organic radicals, such as alkyl. Y is hydrogen or a protective group, such as tosyl.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: April 26, 2011
    Assignee: Bayer Cropscience AG
    Inventors: Hartmut Ahrens, Andreas van Almsick, Monika Schmitt, Jan Dittgen, Martin Hills, Heinz Kehne, Christopher Rosinger, Stefan Lehr, Dieter Feucht
  • 2-(3-AMINOBENZOYL)-3-CYCLOPROPYL-3-OXOPROPANENITRILES AND THEIR USE AS HERBICIDES
    Publication number: 20110053778
    Abstract: 2-(3-Aminobenzoyl)-3-cyclopropyl-3-oxopropanenitriles of the formula (I) are described as herbicides. In this formula (I), X and Y are organic radicals such as alkyl and other radicals such as halogen, nitro and cyano.
    Type: Application
    Filed: July 27, 2010
    Publication date: March 3, 2011
    Applicant: BAYER CROPSCIENCE AG
    Inventors: Hartmut AHRENS, Ines Heinemann, Andreas Van Almsick, Ralf Braun, Jan Dittgen, Dieter Feucht, Martin Jeffrey Hills, Heinz Kehne, Christopher Hugh Rosinger, Stefan Lehr
  • 2-(3-ALKYLTHIOBENZOYL)CYCLOHEXANEDIONES AND THEIR USE AS HERBICIDES
    Publication number: 20110053779
    Abstract: 2-(3-Alkylthiobenzoyl)cyclohexanediones of the formula (I) are described as herbicides. In this formula (I), X, Y, R1 to R8 represent radicals such as hydrogen, organic radicals such as alkyl and alkoxy.
    Type: Application
    Filed: July 27, 2010
    Publication date: March 3, 2011
    Applicant: BAYER CROPSCIENCE AG
    Inventors: Hartmut AHRENS, Andreas VAN ALMSICK, Jan DITTGEN, Christopher Hugh ROSINGER, Isolde HÄEUSER-HAHN, Stefan LEHR, Dieter FEUCHT
  • 4-(3-ALKYLTHIOBENZOYL)PYRAZOLES AND THEIR USE AS HERBICIDES
    Publication number: 20110045980
    Abstract: 4-(3-Alkylthiobenzoyl)pyrazoles of the formula (I) are described as herbicides. In this formula (I), X, Y, R1, R2, R3 and R4 represent radicals such as hydrogen, organic radicals such as alkyl, and other radicals such as halogen.
    Type: Application
    Filed: July 27, 2010
    Publication date: February 24, 2011
    Applicant: BAYER CROPSCIENCE AG
    Inventors: Hartmut Ahrens, Andreas Almsick, Jan Dittgen, Christopher Hugh Rosinger, Isolde Häuser-Hahn, Stefan Lehr, Dieter Feucht
  • 4-(3-AMINOBENZOYL)-5-CYCLOPROPYLISOXAZOLES EFFECTIVE AS HERBICIDES
    Publication number: 20110015073
    Abstract: 4-(3-Aminobenzoyl)-5-cyclopropylisoxazoles of the formula (I) are described as herbicides. In this formula (I), A, X, Y and Z are radicals such as hydrogen, organic radicals such as alkyl, and other radicals such as halogen.
    Type: Application
    Filed: March 19, 2009
    Publication date: January 20, 2011
    Applicant: BAYER CROPSCIENCE AG
    Inventors: Heinz Kehne, Andreas Almsick, Hartmut Ahrens, Dieter Feucht, Ines Heinemann, Jan Dittgen, Martin Jeffrey Hills, Stefan Lehr, Christopher Hugh Rosinger
  • PYRIMIDIN-4-YLPROPANEDINITRILE DERIVATIVES, PROCESSES FOR THEIR PREPARATION AND THEIR USE AS HERBICIDES AND PLANT GROWTH REGULATORS
    Publication number: 20100240536
    Abstract: Pyrimidin-4-ylpropanedinitrile derivatives, process for their preparation and their use as herbicides and plant growth regulators The invention relates to compounds of the formula (I) and N-oxides, tautomers and agrochemically compatible salts thereof to processes for their preparation, and to their use as herbicides and plant growth regulators, in particular as herbicides for the selected control of harmful plants in useful plant crops.
    Type: Application
    Filed: March 16, 2010
    Publication date: September 23, 2010
    Applicant: BAYER CROPSCIENCE AG
    Inventors: Marco Brünjes, Hansjörg Dietrich, Hartmut Ahrens, Michael Gerhard Hoffmann, Jan Dittgen, Dieter Feucht, Christopher Hugh Rosinger, Isolde Häuser-Hahn