Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6644968 | Orthodontic appliance | Masaaki Orikasa, Seiji Kihara, Mitsuhiro Matsushima | 2003-11-11 |
| 4943541 | Glass ceramics | Akira Watanabe, Yoshimitsu Takeuchi, Seiji Kihara | 1990-07-24 |