Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4687360 | Thermal imaging ribbon including a partially crystalline polymer | Russel E. Wellman | 1987-08-18 |
| 4684271 | Thermal transfer ribbon including an amorphous polymer | Russel E. Wellman | 1987-08-04 |