Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6908505 | Thermochromic compositions of color formers and lewis acids | Nabil Lawandy, Charles M. Zepp | 2005-06-21 |
| 6881915 | Contrast enhancing marking system for application of unobtrusive identification and other markings | Nabil Lawandy, Charles M. Zepp | 2005-04-19 |