Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6790501 | Limited-play optical media with improved shelf-life and playability | Hendrik Theodorus van de Grampel, Jan-Pleun Lens, Marc Brian Wisnudel, Daniel R. Olson, Emil Markov Georgiev +1 more | 2004-09-14 |