Patents by Inventor Klaus Haaf

Klaus Haaf 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).

  • 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
  • Patent number: 6794336
    Abstract: The present invention relates to a compound of the formula (I) or salt thereof in which R1 is identical or different at each occurrence and is H, halogen, CN, nitro, SF5, (C1-C8)alkyl, (C2-C8)alkenyl, (C2-C8)alkynyl, (C1-C8)alkoxy, [(C1-C8)alkyl]-carbonyl or (C1-C8)alkylsulfonyl, each of the radicals being unsubstituted or substituted,  or is S(O)p—R7, where p=0, 1 or 2 and R7 is (C1-C8)alkyl, (C1-C8)haloalkyl or NR8R9, where  R8 and R9 independently of one another are identical or different and are H, (C1-C8)alkyl, (C2-C8)alkenyl, (C7-C10)arylalkyl, (C7-C10)alkylaryl or (C6-C10)aryl, each of the last-mentioned five radicals being unsubstituted or substituted,  or is a group of the formula where R10 is (C1-C8)alkyl which is unsubstituted or substituted, and W=O or S, A is optionally substituted aryl or an optionally substituted heterocyclic radical, X is O or S, R2,R3,R4, and R5 are identical or different and are H, hal
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: September 21, 2004
    Assignee: Aventis Crop Science GmbH
    Inventors: Klaus Haaf, Lothar Willms, Thomas Auler, Hubert Menne, Hermann Bieringer
  • Publication number: 20040171079
    Abstract: The invention relates to a resin-bound synthesis process for the preparation of chemical compounds of the formula (I)
    Type: Application
    Filed: March 12, 2004
    Publication date: September 2, 2004
    Inventors: Klaus Haaf, Lothar Willms
  • Publication number: 20040138495
    Abstract: The invention relates to solid phase processes for the systematic preparation of chemical compounds from the group of the phosphonous or phosphinic acids and/or derivatives thereof and the corresponding substance libraries which can be employed for test purposes, in particular tests for biological activity.
    Type: Application
    Filed: December 17, 2003
    Publication date: July 15, 2004
    Inventors: Klaus Haaf, Marcel Patek
  • 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
  • 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
  • Publication number: 20030229125
    Abstract: The present invention relates to a compound of the formula (I) or salt thereof 1
    Type: Application
    Filed: June 21, 2002
    Publication date: December 11, 2003
    Inventors: Klaus Haaf, Lothar Willms, Thomas Auler, Hubert Menne, Hermann Bieringer
  • Publication number: 20030158443
    Abstract: The invention relates to a resin-bound synthesis process for the preparation of chemical compounds of the formula (I)
    Type: Application
    Filed: October 2, 2002
    Publication date: August 21, 2003
    Inventors: Klaus Haaf, Lothar Willms
  • Publication number: 20030108944
    Abstract: The invention relates to solid phase processes for the systematic preparation of chemical compounds from the group of the phosphonous or phosphinic acids and/or derivatives thereof and the corresponding substance libraries which can be employed for test purposes, in particular tests for biological activity.
    Type: Application
    Filed: October 7, 1998
    Publication date: June 12, 2003
    Inventors: KLAUS HAAF, MARCEL PATEK
  • Publication number: 20020128383
    Abstract: The invention relates to a resin-bound synthesis process for the preparation of chemical compounds of the formula (I)
    Type: Application
    Filed: October 10, 1997
    Publication date: September 12, 2002
    Inventors: KLAUS HAAF, LOTHAR WILLMS
  • Patent number: 6235680
    Abstract: Novel N-acylsulfonamides, novel mixtures of herbicides and antidotes, and their use Safeners against phytotoxic side effects of pesticides in crop plants are compounds of the formula (I) and salts thereof where R1 is hydrogen, a hydrocarbon radical, a hydrocarbonoxy radical, a hydrocarbonthio radical or a heterocyclyl radical, each of the last-mentioned 4 radicals being unsubstituted or substituted by one or more identical or different radicals selected from the group consisting of halogen, cyano, nitro, amino, hydroxyl, carboxyl, formyl, carboxamide, sulfonamide and radicals of the formula —Za—Ra R2 is hydrogen or (C1-C4)-alkyl or R1 and R2 together with the group of the formula —CO—N— are the radical of a 3- to 8-membered saturated or unsaturated ring and R3 to R5, n and m are as defined in claim 1. The compounds can be prepared by the process of claim 8.
    Type: Grant
    Filed: May 27, 1997
    Date of Patent: May 22, 2001
    Assignee: Hoechst Schering AgrEvo GmbH
    Inventors: Frank Ziemer, Klaus Haaf, Lothar Willms, Klaus Bauer, Hermann Bieringer, Christopher Rosinger
  • Patent number: 5714436
    Abstract: Compounds of the formula (I) or salts thereof ##STR1## in which R.sup.1 -R.sup.4, W, A, n and m are as defined in claim 1, for exampleR.sup.1 and R.sup.2 are H, (substituted) alkyl, (substituted) alkenyl or alkynyl, (substituted) cycloalkyl, (substituted) aryl or acyl andA is (substituted) pyrimidinyl or triazinylare suitable as selective sulfonylurea herbicides and plant growth regulators.(I) is prepared analogously to known processes via intermediates, some of which are novel, for example via suitably substituted pyridylsulfonamides (II) and N-tert-butylsulfonamides (VIII) as claimed in claim 5.
    Type: Grant
    Filed: March 22, 1996
    Date of Patent: February 3, 1998
    Assignee: Hoechst Schering AgrEvo GmbH
    Inventors: Klaus Haaf, Heinz Kehne, Klaus Bauer, Hermann Bieringer