Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6816334 | Information recording and reproducing device and tracking servo system therefor | Kosuke Watanabe, Hiroyuki Katayama | 2004-11-09 |
| 6804822 | Magnetic recording medium and magnetic recording apparatus using same | Junichi Sato, Kosuke Watanabe, Hiroyuki Katayama, Hiroshi Fuji, Kenji Ohta | 2004-10-12 |
| 6721237 | Composite magnetic head device | Masaki Hamamoto, Junichi Satoh, Hiroyuki Katayama | 2004-04-13 |
| 6687195 | Magnetic recording head and magnetic recording device | Shintaro Miyanishi, Hiroyuki Katayama, Hiroshi Fuji | 2004-02-03 |