Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4619937 | Saturated bicyclic lactam acids and derivatives as cognition activators | Donald E. Butler | 1986-10-28 |
| 4562195 | Reversing amnesia with saturated tricyclic nitrogen-containing diones | Donald E. Butler | 1985-12-31 |
| 4372960 | Quaternary derivatives of N-(substituted-aminoalkyl)-2-oxo-1-pyrrolidine-acetamides as cognition activators | — | 1983-02-08 |