Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4692337 | Sustained release pharmaceutical tablet of theophylline and production process thereof | Tadashi Ukigaya | 1987-09-08 |
| 4261970 | Theophylline sustained release granule | Tadashi Ukigaya, Satoru Tanaka | 1981-04-14 |