Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5500454 | Denture base separating material | Shigeru Hanatani, Junichi Okada, Yukari Nasu, Ryoji Nakazato | 1996-03-19 |
| 4795345 | Artificial teeth | Minoru Ai, Kenji Hiranuma, Toshio Ito | 1989-01-03 |