Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10733825 | Covert secure document registration system | Brian Lewis, Xiaorong Cai, Michael R. Riley | 2020-08-04 |
| 10475269 | Covert secure document registration system | Brian Lewis, Xiaorong Cai, Michael R. Riley | 2019-11-12 |
| 9087288 | Method of generating void pantographs | Jason Zimpelmann | 2015-07-21 |
| 9088735 | Computer-based system and method for adding variable security data in printing operations | — | 2015-07-21 |