Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4229527 | Process and reagent for the kinetic determination of enzyme substrates | Joachim Ziegenhorn, August W. Wahlefeld, Alexander Hagen, Wolfgang Gruaber | 1980-10-21 |
| 4212938 | Reagent and method for the determination of cholesterol | Wolfgang Gruber, Erich Bernt, Alexander Hagen, Peter Roeschlau, Gunter Lang +1 more | 1980-07-15 |