Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6426157 | Perpendicular magnetic recording medium | Hirotaka Hokkyo, Katsumichi Tagami | 2002-07-30 |
| 6387483 | Perpendicular magnetic recording medium and manufacturing process therefor | Hirotaka Hokkyo | 2002-05-14 |