Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5034521 | Process for preparing 3-substituted methyl-3-cephem-4-carboxylic acid | Wataru Takahashi | 1991-07-23 |
| 4902793 | Process for preparing 3-alkoxymethylcephalosporins | Joji Nishikido | 1990-02-20 |