Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5648197 | Optical disk | — | 1997-07-15 |
| 5631056 | Optical recording medium | Toshinori Kawanishi | 1997-05-20 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5648197 | Optical disk | — | 1997-07-15 |
| 5631056 | Optical recording medium | Toshinori Kawanishi | 1997-05-20 |