Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7791597 | Uniquely identifiable inking instruments | Dana Lu Silverstein, Manolito E. Adan, Nigel Keam, Robert Brigham | 2010-09-07 |
| 7692639 | Uniquely identifiable inking instruments | Dana Lu Silverstein, Manolito E. Adan, Nigel Keam, Robert Brigham | 2010-04-06 |