| 8840029 |
Multi wavelength excitation/emission authentication and detection scheme |
Nabil Lawandy, Leif Olson, Charles M. Zepp |
2014-09-23 |
| 7529385 |
Marking articles using a covert digitally watermarked image |
Nabil Lawandy, Jeffrey L. Conroy |
2009-05-05 |
| 7393623 |
Incorporation of markings in optical media |
Jeffrey L. Conroy, Robert Afzal, Allison Berube, Nabil Lawandy, Dana Lewis +1 more |
2008-07-01 |
| 7220535 |
Marking and authenticating articles |
Nabil Lawandy, Jeffrey L. Conroy, Robert Afzal, Allison Berube, Charles M. Zepp |
2007-05-22 |
| 7184569 |
Marking articles using a covert digitally watermarked image |
Nabil Lawandy, Jeffrey L. Conroy |
2007-02-27 |
| 7149231 |
Monolithic, side-pumped, passively Q-switched solid-state laser |
Robert Afzal |
2006-12-12 |
| 6780564 |
Methods and apparatus for rendering an optically encoded medium unreadable and tamper-resistant |
Nabil Lawandy, Charles M. Zepp, Marianne Krieg-Kowald |
2004-08-24 |
| 6531262 |
Methods and apparatus for rendering an optically encoded medium unreadable and tamper-resistant |
Nabil Lawandy, Charles M. Zepp, Marianne Krieg-Kowald |
2003-03-11 |