Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7916862 | Stegotext encoder and decoder | Roger Sewell, Mark St. John Owen, Stephen Barlow | 2011-03-29 |
| 7917766 | Stegotext encoder and decoder | Roger Sewell, Mark St. John Owen, Stephen Barlow | 2011-03-29 |
| 7298841 | Stegotext encoder and decoder | Roger Sewell, Mark St. John Owen, Stephen Barlow | 2007-11-20 |