Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5006388 | Magnetic disc | Ryuichi Kuzuo, Atsushi Kawamoto, Kenji Ohmori, Hiroko Sekiya | 1991-04-09 |
| 4968564 | Magnetic recording medium | Tomohisa Watanabe, Makoto Akihiro, Kouichi Oka, Takehiko Sato | 1990-11-06 |
| 4769282 | Magnetic recording medium | Tomohisa Watanabe, Makoto Akihiro, Kouichi Oka, Takehiko Sato | 1988-09-06 |