Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6770167 | Production method of and production apparatus for optical recording disc | Shoji Akiyama, Yoshinori Itaba | 2004-08-03 |
| 6702920 | Production method of and production apparatus for optical recording disc | Shoji Akiyama, Yoshinori Itaba, Tokuhiro Morioka | 2004-03-09 |