Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6821653 | Magnetic recording medium, process for producing the same, and magnetic recording and reproducing apparatus | Ryuji Sakaguchi, Yukihisa Matsumura | 2004-11-23 |
| 6818858 | Laser processing unit and processing apparatus comprising laser processing unit | Hisashi Yasoda | 2004-11-16 |