Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5128146 | Apatite coated article and process for producing the same | Yasuhiko Hirayama, Satoshi Ojima | 1992-07-07 |
| 4946378 | Artificial intervertebral disc | Yasuhiko Hirayama, Satoshi Ojima, Hiromi Matsuzaki | 1990-08-07 |