Patents by Inventor Kurt Hamp

Kurt Hamp 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).

  • Chiral phenyldihydrofuranones as PDE-IV inhibitors
    Patent number: 6011060
    Abstract: Described are racemic and enantiomerically pure chiral phenyldihydrofuranones, their preparation and their use in drugs (selective inhibition of the cAMP-specific phosphodiesterase IV).
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: January 4, 2000
    Assignee: Schering Aktiengesellschaft
    Inventors: Henry Laurent, Peter Esperling, Kurt Hamp, Herbert Schneider, Helmut Wachtel
  • Process for resolution of racemates of 4-aryl-2-oxo-pyrrolidine-3-carboxylic acid esters
    Patent number: 5539111
    Abstract: An enzymatic process employing pancreatin or choelsterol esterase for resolution of racemates of 4-aryl-2-oxo-pyrrolidine-3-carboxylic acid esters of general formula I ##STR1## in which X represents a carbon-carbon bond or an oxygen atom,R.sub.1 means a hydrocarbon radical optionally substituted by hydroxy groups, oxo groups and/or halogen atoms and/or interrupted by nitrogen atoms with at most 16 carbon atoms,R.sub.2 symbolizes an alkyl group with up to 4 carbon atoms andR.sub.3 represents an alkyl group with at most 6 carbon atoms is described.
    Type: Grant
    Filed: February 18, 1993
    Date of Patent: July 23, 1996
    Assignee: Schering Aktiengesellschaft
    Inventors: Karl Petzoldt, Ralph Schmiechen, Kurt Hamp, Matthias Gottwald