Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5127834 | Artificial teeth and method for making them | Akira Hasegawa, Yuji Nakamura | 1992-07-07 |
| 4969817 | Artificial teeth | Kenji Hiranuma, Hiroshi Mori, Akira Hasegawa | 1990-11-13 |
| 4909738 | Artificial teeth for anterior teeth portions | Minoru Ai, Kensuke Yamagata, Tadaki Kagaya, Akira Hasegawa, Yuji Nakamura | 1990-03-20 |