Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857641 | C.12 modified erythromycin A derivatives | — | 1989-08-15 |
| 4835141 | Neutral macrolide antibiotics from Streptomyces | Walter P. Cullen, Hiroshi Maeda, Junsuke Tone | 1989-05-30 |