Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7954164 | Method of copy detection and protection using non-standard TOC entries | Petrus Henricus Cornelius Bentvelsen | 2011-05-31 |
| 7178087 | Read-only record carrier with recordable area in subcode channel | Petrus Henricus Cornelius Bentvelsen | 2007-02-13 |