Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4968564 | Magnetic recording medium | Junya Tada, Tomohisa Watanabe, Kouichi Oka, Takehiko Sato | 1990-11-06 |
| 4769282 | Magnetic recording medium | Junya Tada, Tomohisa Watanabe, Kouichi Oka, Takehiko Sato | 1988-09-06 |