Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5323381 | Disc for recording information signals | Kenji Takahashi, Sachiya Chiba | 1994-06-21 |
| 5284538 | Optical disc having signal recording layer on each side and method for producing same | Akira Suzuki | 1994-02-08 |