Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9530172 | Encoding hidden information in spatial line frequencies | Silviu Crisan, Marc Gaudreau | 2016-12-27 |
| 8846778 | Method and composition for printing tactile marks and security document formed therefrom | Thivaharan Thurailingam, Silviu Crisan, Norbert Joseph Sylvain Chalifoux | 2014-09-30 |