Patents by Inventor Hendrik Helmke

Hendrik Helmke 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).

  • Use of fused ring-1,2,4-benzotriazine derivatives as herbicides or plant growth regulators for the control of undesired plants or vegetation, compounds and compositions thereof, and processes for their preparation
    Publication number: 20070042909
    Abstract: The use of fused ring-1,2,4-benzotriazine derivatives as herbicides or plant growth regulators for the control of undesired plants or vegetation, compounds and compositions thereof, and processes for their preparation. The invention relates to the use of a compound of the formula (I) or a salt thereof: wherein A-W, X, Y, Z, R1, R2, R3 and R4 are defined in the description, as herbicides or plant growth regulators for the control of undesired plants or vegetation, to compounds and compositions thereof, and to processes for their preparation.
    Type: Application
    Filed: July 20, 2004
    Publication date: February 22, 2007
    Inventors: Arnim Kohn, Wolfgang Giencke, Hendrik Helmke, Kenneth Marques, Thomas Auler, Martin Hills, Gyorgy Hajos
  • Herbicide/safener combination
    Publication number: 20070015661
    Abstract: The present invention relates to a herbicide/safener combination comprising (A) one or more compounds of the formula (I) or salts thereof in which R1, R2, R3, R4, and R5 are different radicals, n is 1 or 2, X is F, Cl, Br or I, and Y is H, F, Cl, Br or I; and (B) one or more safeners, and also to the use thereof for controlling harmful plants
    Type: Application
    Filed: June 29, 2006
    Publication date: January 18, 2007
    Applicant: Bayer CropScience GmbH
    Inventors: Chris Rosinger, Hansjorg Dietrich, Hendrik Helmke, Wolfgang Schaper, Thomas Auler, Heinz Kehne, Martin Hills, Dieter Feucht
  • Herbicide/safener combination
    Publication number: 20070015662
    Abstract: The present invention relates to a herbicide/safener combination comprising (A) one or more compounds of the formula (I) or salts thereof in which R1, R2, R3, R4, and R5 are different radicals, n is 1 or 2, X is H or (C1-C4)-alkyl, and Y is H; and (B) one or more safeners, and also to the use thereof for controlling harmful plants.
    Type: Application
    Filed: July 3, 2006
    Publication date: January 18, 2007
    Applicant: Bayer CropScience GmbH
    Inventors: Chris Rosinger, Hansjorg Dietrich, Hendrik Helmke, Wolfgang Schaper, Paul Evans, Erwin Hacker
  • Process for preparing 3-arylmethylthio- and 3-heteroarylmethylthio-4,5-dihydroisoxazoline derivatives
    Publication number: 20070015805
    Abstract: The invention relates to a process for preparing 3-arylmethylthio- and 3-heteroarylmethylthio-4,5-dihydroisoxazoline derivatives of the formula (I) by a one-pot process, by reacting corresponding arylmethyl- and heteroarylmethylisothiuronium salts, in the presence of an aqueous alkali metal or alkaline earth metal base, with a isoxazoline derivative to give the corresponding 3-arylmethylthio- and 3-heteroarylmethylthio-4,5-dihydroisoxazoline derivatives.
    Type: Application
    Filed: June 29, 2006
    Publication date: January 18, 2007
    Applicant: Bayer CropScience GmbH
    Inventors: Wolfgang Schaper, Hendrik Helmke
  • Substituted pyrazolyloxyphenyl derivatives as herbicides
    Publication number: 20060223709
    Abstract: What is described are pyrazolyloxyphenyl derivatives of the formula (I) and their use as herbicides. In this formula (I), R1, R2 and R3 denote various radicals, and A is a cyclic radical from the group consisting of phenyl, pyridyl, thienyl and pyrazolyl.
    Type: Application
    Filed: March 29, 2006
    Publication date: October 5, 2006
    Applicant: Bayer CropScience GmbH
    Inventors: Hendrik Helmke, Michael Hoffmann, Lothar Willms, Thomas Auler, Heinz Kehne, Martin Hills, Dieter Feucht
  • Substituted N-[pyrimidin-2-ylmethyl]carboxamides and their use as herbicides and plant growth regulators
    Publication number: 20060223708
    Abstract: What is described are N-[pyrimidin-2-ylmethyl]carboxamides of the formula (I) and their use as herbicides. In this formula (I), X1 and X2 are hydrogen or methyl, R1 to R4 are various radicals and A is an aromatic or heteroaromatic ring.
    Type: Application
    Filed: March 31, 2006
    Publication date: October 5, 2006
    Applicant: Bayer CropScience GmbH
    Inventors: Michael Hoffmann, Klaus Haaf, Hendrik Helmke, Lothar Willms, Thomas Auler, Martin Hills, Heinz Kehne, Dieter Feucht
  • 4-Trifluoromethylpyrazolyl-substituted pyridines and pyrimidines
    Publication number: 20060122063
    Abstract: A description is given of 4-trifluoromethylpyrazolyl-substituted pyridines and pyrimidines of formula (I) and of their use as herbicides. In this formula (I) R1, R2, R3 and R4 are various radicals, A is an aromatic or heteroaromatic radical, and Z is a nitrogen or carbon atom.
    Type: Application
    Filed: January 5, 2006
    Publication date: June 8, 2006
    Applicant: Bayer CropScience GmbH
    Inventors: Michael Hoffmann, Hendrik Helmke, Lothar Willms, Thomas Auler, Hermann Bieringer, Hubert Menne
  • 4-trifluoromethylpyrazolyl-substituted pyridines and pyrimidines
    Patent number: 7022650
    Abstract: A description is given of 4-trifluoromethylpyrazolyl-substituted pyridines and pyrimidines of formula (I) and of their use as herbicides. In this formula (I) R1, R2, R3 and R4 are various radicals, A is an aromatic or heteroaromatic radical, and Z is a nitrogen or carbon atom.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: April 4, 2006
    Assignee: Bayer CropScience GmbH
    Inventors: Michael Gerhard Hoffmann, Hendrik Helmke, Lothar Willms, Thomas Auler, Hermann Bieringer, Hubert Menne
  • Substituted 4-(4-trifluoromethylpyrazolyl)pyrimidines
    Publication number: 20050209106
    Abstract: A description is given of 4-(4-trifluoromethylpyrazolyl)pyrimidines of the formula (I) and of their use as herbicides. In this general formula (I), R1, R2, R3 and R4 are various radicals and Y is an aromatic or heteroaromatic radical.
    Type: Application
    Filed: March 10, 2005
    Publication date: September 22, 2005
    Applicant: Bayer CropScience GmbH
    Inventors: Michael Hoffmann, Hendrik Helmke, Lothar Willms, Thomas Auler, Heinz Kehne, Martin Hills, Dieter Feucht
  • Substituted phenyl derivatives
    Patent number: 6750222
    Abstract: The present invention relates to compounds of the formula (I) and/or salts thereof where R1, R2, A, B, X and Y are as defined in claim 1. The compounds according to the invention are suitable for use as herbicides and plant growth regulators.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: June 15, 2004
    Assignee: Bayer CropScience GmbH
    Inventors: Hendrik Helmke, Michael Gerhard Hoffmann, Klaus Haaf, Lothar Willms, Thomas Auler, Hermann Bieringer, Hubert Menne
  • 4-trifluoromethylpyrazolyl-substituted pyridines and pyrimidines
    Publication number: 20040082475
    Abstract: A description is given of 4-trifluoromethylpyrazolyl-substituted pyridines and pyrimidines of the formula (I) and of their use as herbicides.
    Type: Application
    Filed: July 24, 2003
    Publication date: April 29, 2004
    Inventors: Michael Gerhard Hoffman, Hendrik Helmke, Lothar Willms, Thomas Auler, Hermann Bieringer, Hubert Menne
  • 4-trifluoromethylpyrazolyl-substituted pyridines and pyrimidines
    Publication number: 20040072692
    Abstract: A description is given of 4-trifluoromethylpyrazolyl-substituted pyridines and pyrimidines of formula (I) and of their use as herbicides.
    Type: Application
    Filed: July 24, 2003
    Publication date: April 15, 2004
    Inventors: Michael Gerhard Hoffmann, Hendrik Helmke, Lothar Willms, Thomas Auler, Hermann Bieringer, Hubert Menne
  • Substituted phenyl derivatives
    Publication number: 20030228982
    Abstract: The present invention relates to compounds of the formula (I) and/or salts thereof 1
    Type: Application
    Filed: December 13, 2002
    Publication date: December 11, 2003
    Inventors: Hendrik Helmke, Michael Gerhard Hoffmann, Klaus Haaf, Lothar Willms, Thomas Auler, Hermann Bieringer, Hubert Menne