Issued Patents All Time
Showing 76–79 of 79 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5811582 | Dimethyl-(3-aryl-but-3-enyl)-amine compounds as pharmaceutical active ingredients | Wolfgang Strassburger, Elmar Friderichs, Babette-Yvonne Koegel | 1998-09-22 |
| 5733936 | 6-dimethylaminomethyl-1-phenyl-cyclohexane compounds as pharmaceutical active ingredients | Wolfgang Strassburger, Norma Selve, Elmar Friderichs | 1998-03-31 |
| 5728885 | Method of preparing the enantiomers of O-dimethyltramadol | Werner Winter, Ivars Graudums, Peter Jansen, Wolfgang Strassburger, Elmar Josef Friederichs | 1998-03-17 |
| 5723668 | Method of separating the racemate of tramadol | Werner Winter, Ivars Graudums, Peter Jansen | 1998-03-03 |