Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5359591 | Optical disc having information pits in form of plurality of fragments arranged in symmetrical pattern | — | 1994-10-25 |
| 5357499 | Optical disk and optical disk reproducing apparatus | — | 1994-10-18 |
| 5289443 | Apparatus for playing optical recording media of different recording densities | Takanori Maeda | 1994-02-22 |