Patents by Inventor Karen Peilstocker

Karen Peilstocker 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).

  • Preparation of halogenated 4-aminophenols
    Publication number: 20080139795
    Abstract: The present invention relates to halogenated 4-aminophenols and to halogenated 4-(phenyldiazenyl)phenols, to a process for their preparation and to the use of the halogenated 4-hydroxyphenols for preparing active ingredients, especially in pharmaceuticals and agrochemicals.
    Type: Application
    Filed: January 28, 2008
    Publication date: June 12, 2008
    Inventors: Karen Peilstocker, Albercht Marhold, Jens-Peter Joschek
  • Preparation of halogenated 4-aminophenols
    Patent number: 7358397
    Abstract: The present invention relates to halogenated 4-aminophenols and to halogenated 4-(phenyidiazenyl)phenols, to a process for their preparation and to the use of the halogenated 4-hydroxyphenols for preparing active ingredients, especially in pharmaceuticals and agrochemicals.
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: April 15, 2008
    Assignee: LANXESS Deutschland GmbH
    Inventors: Karen Peilstöcker, Albrecht Marhold, Jens-Peter Joschek
  • Preparation of halogenated 4-aminophenols
    Publication number: 20050143425
    Abstract: The present invention relates to halogenated 4-aminophenols and to halogenated 4-(phenyidiazenyl)phenols, to a process for their preparation and to the use of the halogenated 4-hydroxyphenols for preparing active ingredients, especially in pharmaceuticals and agrochemicals.
    Type: Application
    Filed: September 3, 2004
    Publication date: June 30, 2005
    Inventors: Karen Peilstocker, Albrecht Marhold, Jens-Peter Joschek
  • Fluorinated benzaldehydes
    Patent number: 6903239
    Abstract: The present invention relates to fluorinated benzaldehydes, to a process for preparing them and also to the use of the fluorinated benzaldehydes for preparing active ingredients, especially in medicaments and agrochemicals.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: June 7, 2005
    Assignee: Bayer Chemical Aktiengesellschaft
    Inventors: Karen Peilstöcker, Albrecht Marhold
  • Fluorinated aromatics
    Publication number: 20040171864
    Abstract: The present invention relates to fluorinated aromatics, to a process for preparing them and also to the use of the fluorinated aromatics for preparing active ingredients, especially in medicaments and agrochemicals.
    Type: Application
    Filed: November 21, 2003
    Publication date: September 2, 2004
    Inventors: Karen Peilstocker, Albrecht Marhold, Axel Pleschke, Guido Giffels
  • Fluorinated benzaldehydes
    Publication number: 20040133043
    Abstract: The present invention relates to fluorinated benzaldehydes, to a process for preparing them and also to the use of the fluorinated benzaldehydes for preparing active ingredients, especially in medicaments and agrochemicals.
    Type: Application
    Filed: November 21, 2003
    Publication date: July 8, 2004
    Inventors: Karen Peilstocker, Albrecht Marhold
  • Process for the preparation of trifluoromethyl-substituted biphenylcarboxylic acids and novel trichloromethyl-and trifluoromethyl-substituted biphenylcarbonitriles
    Patent number: 6580002
    Abstract: Trifluoromethyl-substituted biphenylcarboxylic acids are prepared by converting methyl-substituted biphenylcarbonitriles into the corresponding trichloromethyl-substituted biphenylcarbonitriles, converting the trichloromethyl group thereof to a trifluoromethyl group and thus obtaining trifluoromethyl-substituted biphenylcarbonitriles, and preparing the corresponding carboxylic acids therefrom by hydrolysis. A number of intermediates arising during this are novel compounds.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: June 17, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Peter Müller, Albrecht Marhold, Karen Peilstöcker
  • Process for the preparation of trifiuoromethyl-substituted biphenylcarboxylic acids and novel trichloromethyl-and trifluoromethyl-substituted biphenylcarbonitriles
    Publication number: 20030055285
    Abstract: Trifluoromethyl-substituted biphenylcarboxylic acids are prepared by converting methyl-substituted biphenylcarbonitriles into the corresponding trichloromethyl-substituted biphenylcarbonitriles, converting the trichloromethyl group thereof to a trifluoromethyl group and thus obtaining trifluoromethyl-substituted biphenylcarbonitriles, and preparing the corresponding carboxylic acids therefrom by hydrolysis. A number of intermediates arising during this are novel compounds.
    Type: Application
    Filed: August 9, 2002
    Publication date: March 20, 2003
    Inventors: Peter Muller, Albrecht Marhold, Karen Peilstocker
  • Process for the preparation of trifluoromethyl-substituted biphenylcarboxylic acids and novel trichloromethyl-and trifluoromethyl-substituted biphenylcarbonitriles
    Patent number: 6465688
    Abstract: Trifluoromethyl-substituted biphenylcarboxylic acids are prepared by converting methyl-substituted biphenylcarbonitriles into the corresponding trichloromethyl-substituted biphenylcarbonitriles, converting the trichloromethyl group thereof to a trifluoromethyl group and thus obtaining trifluoromethyl-substituted biphenylcarbonitriles, and preparing the corresponding carboxylic acids therefrom by hydrolysis. A number of intermediates arising during this are novel compounds.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: October 15, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Peter Müller, Albrecht Marhold, Karen Peilstöcker
  • PROCESS FOR THE PREPARATION OF TRIFLUOROMETHYL-SUBSTITUTED BIPHENYLCARBOXYLIC ACIDS AND NOVEL TRICHLOROMETHYL - AND TRIFLUOROMETHYL - SUBSTITUTED BIPHENYLCARBONITRILES
    Publication number: 20020095052
    Abstract: Trifluoromethyl-substituted biphenylcarboxylic acids are prepared by converting methyl-substituted biphenylcarbonitriles into the corresponding trichloromethyl-substituted biphenylcarbonitriles, converting the trichloromethyl group thereof to a trifluoromethyl group and thus obtaining trifluoromethyl-substituted biphenylcarbonitriles, and preparing the corresponding carboxylic acids therefrom by hydrolysis. A number of intermediates arising during this are novel compounds.
    Type: Application
    Filed: January 8, 2002
    Publication date: July 18, 2002
    Inventors: Peter Muller, Albrecht Marhold, Karen Peilstocker