Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5889078 | Organic polymer compound and production therof | Sumio Watanabe | 1999-03-30 |
| 5821281 | Organic polymer compound and production thereof | Sumio Watanabe | 1998-10-13 |
| 5306505 | Plasma-irradiated solid preparation | Sumio Watanabe | 1994-04-26 |