Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7158340 | Magnetic recording and reproducing apparatus and magnetic recording medium | Yoshikazu Soeno, Kazuya Shimakawa, Hiroki Matsukuma | 2007-01-02 |
| 7136252 | Magnetic recording and reproducing apparatus with recording layer having predetermined convex-concave pattern | — | 2006-11-14 |
| 7095581 | Magnetic recording and reproducing apparatus with recording layer having predeterminded convex-concase pattern | — | 2006-08-22 |
| 7090934 | Perpendicular magnetic recording medium | Hirotaka Hokkyo, Shinzo Tsuboi | 2006-08-15 |
| 6426157 | Perpendicular magnetic recording medium | Hirotaka Hokkyo, Shinzo Tsuboi | 2002-07-30 |
| 6270885 | Perpendicular magnetic recording medium | Hirotaka Hokkyo, Shinzo Tsuboi | 2001-08-07 |
| 6246544 | Magnetic disk drive | Shinzo Tsuboi, Katsumi Suemitsu | 2001-06-12 |
| 6204995 | Magnetic disc apparatus | Hirotaka Hokkyo, Shinzo Tsuboi | 2001-03-20 |