Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5258375 | Composition for the preparation of dosage-form active vitamins D.sub.3 containing polyvinylacetal diethylaminoacetate | Toshio Yokoyama, Akira Iwasa | 1993-11-02 |
| 5204087 | Composition for foaming preparation | Kimie Ominato, Toshio Yokoyama, Akira Iwasa | 1993-04-20 |