Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863938 | Pyridine derivatives and their use as nootropic agents | Peter Waldmeier | 1989-09-05 |
| 4833169 | Hydropyridine derivatives | Wolfgang Frostl, Armin Zust | 1989-05-23 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863938 | Pyridine derivatives and their use as nootropic agents | Peter Waldmeier | 1989-09-05 |
| 4833169 | Hydropyridine derivatives | Wolfgang Frostl, Armin Zust | 1989-05-23 |