Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6480462 | Hybrid optical disc construction | James A. Barnard, Thomas C. Burgo | 2002-11-12 |
| 6423478 | Method of forming a watermark image in a hybrid optical master disc | — | 2002-07-23 |