Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6818331 | Magnetic recording medium, production process thereof, and magnetic recording and reproducing apparatus | Akira Sakawaki, Kenji Shimizu, Masato Kokubu, Hui Yang, Masakazu Kobayashi +1 more | 2004-11-16 |
| 6723458 | Magnetic recording medium, method of manufacture therefor, and magnetic read/write apparatus | Kenji Shimizu, Akira Sakawaki, Hui Yang, Hiroshi Sakai, Takashi Hikosaka +1 more | 2004-04-20 |
| 6682826 | Magnetic recording medium, method of manufacturing therefor, and magnetic read/write apparatus | Kenji Shimizu, Akira Sakawaki, Hiroshi Sakai, Soichi Oikawa, Takashi Hikosaka | 2004-01-27 |