Patents by Inventor Klaus Scheib

Klaus Scheib 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).

  • Method of producing biperiden I
    Patent number: 7034158
    Abstract: The invention relates to a method for producing biperiden which is characterized in that an exo/endo mixture of 1-(bicyclo[2.2.1]hept-5-en-2-yl)-3-piperidino-1-propanone is reacted with an isomer ratio of the exo form to the endo form of at least 2.5:1 with diphenyl magnesium, an isomer mixture containing biperiden is obtained therefrom and biperiden is produced therefrom.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: April 25, 2006
    Assignee: Abbott GmbH & Co. KG
    Inventors: Gerhard Kastner, Klaus Scheib
  • Method of producing biperiden I
    Publication number: 20050176963
    Abstract: The invention relates to a method for producing biperiden which is characterised in that an exo/endo mixture of 1-(bicyclo[2.2.1]hept-5-en-2-yl)-3-piperidino-1-propanone is reacted with an isomer ratio of the exo form to the endo form of at least 2.5:1 with diphenyl magnesium, an isomer mixture containing biperiden is obtained therefrom and biperiden is produced therefrom.
    Type: Application
    Filed: May 17, 2002
    Publication date: August 11, 2005
    Inventors: Gerhard Kastner, Klaus Scheib
  • Resolution of 5-methyltetrahydrofolic acid
    Patent number: 5457202
    Abstract: A process for preparing (6S)-5-methyltetrahydrofolic acid by resolution of racemic (6R,S)-5-methyltetrahydrofolic acid using a base, wherein the base is N-ethyl-2-aminomethylpyrrolidine or its optical isomers.
    Type: Grant
    Filed: May 6, 1994
    Date of Patent: October 10, 1995
    Assignee: Knoll Aktiengesellschaft
    Inventors: Klaus Scheib, Peter Klein, Robert Carter
  • 7-Aminoazolo[1,5-a]-pyrimidines and fungicides containing these compounds
    Patent number: 4567263
    Abstract: 7-Aminoazolo[1,5-a]pyrimidine of the formula ##STR1## where R.sup.1 is unsubstituted or substituted alkyl, halogen, alkoxy, cyano, or cycloalkyl, or is aryl, aryloxy, arylthio, arylalkyl, arylalkoxy or arylalkylthio, each of which may be substituted, or is indane, tetrahydronaphthalene or benzene, each of which may be substituted and is fused to the phenyl ring, R.sup.2 and R.sup.3 are each hydrogen, alkyl or aryl, n is 1 or 2, A is nitrogen or a CR.sup.4 group, where R.sup.4 has the meanings of R.sup.2 and may furthermore be halogen, cyano or alkoxycarbonyl, or together with R.sup.3 is alkylene which may have up to 2 double bonds, and fungicides containing these compounds.
    Type: Grant
    Filed: September 18, 1984
    Date of Patent: January 28, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Karl Eicken, Klaus Scheib, Hans Theobald, Ernst-Heinrich Pommer, Eberhard Ammermann
  • Preparation of phenylacetonitriles carrying basic substituents
    Patent number: 4418017
    Abstract: Phenylacetonitriles carrying basic substituents, of the formula ##STR1## where D, E, F, G, H, I and K have the meanings given in the description, are prepared by reacting the corresponding phenylacetonitrile with a compound of the formula ##STR2## where X, H, I and K have the meanings given in the description, in a solid/liquid phase system in the presence of a phase transfer catalyst.
    Type: Grant
    Filed: May 20, 1982
    Date of Patent: November 29, 1983
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Seitz, Klaus Scheib, Alfred Michel