Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6521315 | Method for making a stamper for use in making a substrate for a digital versatile disc | — | 2003-02-18 |
| 6503047 | Device for holding-disk-shaped plastic substrates | — | 2003-01-07 |
| 6165299 | Method for making digital versatile discs | Jia Ji (George) Guan | 2000-12-26 |
| 5069155 | Apparatus for in-line lacquering of compact disks | Horst Kunze-Concewitz | 1991-12-03 |