Patents by Inventor Wolfgang Kanhai

Wolfgang Kanhai 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).

  • Patent number: 5942529
    Abstract: The benzisothiazolyl-substituted aminomethylchromans are prepared either by substituting the corresponding unsubstituted aminomethylchromans on the amine nitrogen or reacting the corresponding benzisothiazolylalkylamines with appropriate activated methylchromans or reacting the amine nitrogen of aminomethylchroman first with an appropriately substituted alkine and then hydrogenating. The benzisothiazolyl-substituted aminomethylchromans can be used as active compounds in medicaments, in particular in medicaments for the treatment of disorders of the central nervous system.
    Type: Grant
    Filed: June 13, 1996
    Date of Patent: August 24, 1999
    Assignee: Bayer Aktiengesellschaft
    Inventors: Rudolf Schohe-Loop, Hans-Georg Heine, Peter-Rudolf Seidel, Wolfgang Kanhai, Joachim Schuhmacher, Arno Friedl, Ervin Horvath, Thomas Glaser, Reinhard Jork
  • Patent number: 5849749
    Abstract: The 6-(hydroxymethyl-ethyl)pyridines are prepared by a process in which the 3-hydroxymethylpyridines which are hydroxyl-protected in the 6-position are oxidized to the 3-aldehyde, this is then converted into the corresponding oxoheptenoic acid derivative using a Wittig-Homer reaction, after this the oxo group is reduced to the hydroxyl group and then the isomers are separated by chromatography. The 6-(hydroxymethyl-ethyl)pyridines are suitable as active compounds in medicaments, in particular in medicaments having antiarteriosclerotic activity.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: December 15, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventors: Peter Fey, Rolf Angerbauer, Delf Schmidt, Hilmar Bischoff, Wolfgang Kanhai, Martin Radtke, Wolfgang Karl
  • Patent number: 5629300
    Abstract: A metrifonate-containing medicament is disclosed that contains the (-) -enantiomeric metrifonate as the sole active compound providing better cholinesterase-inhibition than the racemate.
    Type: Grant
    Filed: November 10, 1994
    Date of Patent: May 13, 1997
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Boberg, Wolfgang Kanhai, Armin Kern, Volker Muschalek, Ulrich Pleiss