Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845195 | Inhibitor of ribonucleotide reductase | Richard Colonno, John Hannah, Robert B. Stein, Richard L. Tolman | 1989-07-04 |
| 4837304 | Inhibitor of ribonucleotide reductase | Robert A. Stein | 1989-06-06 |
| 4814432 | Inhibitor of ribonucleotide reductase | Roger M. Freidinger, John Hannah, Robert B. Stein, Richard L. Tolman | 1989-03-21 |