Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6721113 | Method of recognizing master disk positioning mark | Akira Saito | 2004-04-13 |
| 6674588 | Magnetic transfer apparatus | Hideyuki Hashi, Taizou Hamada, Mitsuo Kobayashi | 2004-01-06 |