Issued Patents 2002
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6488155 | Methods and apparatus employing multi-spectral imaging for the remote identification and sorting of objects | John A. Moon | 2002-12-03 |
| 6489892 | Use of evaporatively activated color change for verifying the integrity of an object, such as a data storage medium or a gaming token | — | 2002-12-03 |
| 6441380 | Coding and authentication by phase measurement modulation response and spectral emission | — | 2002-08-27 |
| 6370216 | Thickness sensor suitable for detecting a presence of a plurality of items, such as currency | John A. Moon | 2002-04-09 |
| 6338933 | Methods and apparatus for rendering an optically encoded medium unreadable | Charles M. Zepp, Kenneth S. Norland | 2002-01-15 |