Patents per Year
Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 8002190 | Stability of covert pigments | Daoshen Bi, Robert L. Jones | 2011-08-23 | |
| 7086666 | Identification card with embedded halftone image security feature perceptible in transmitted light | — | 2006-08-08 | $565,000 |
| 6752432 | Identification card with embedded halftone image security feature perceptible in transmitted light | — | 2004-06-22 | $1,277,000 |