Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6706864 | Water-insoluble violet benzimidazolone monoazo pigments | Helen Skelton, Jaroslav Slupecky, Justin Yee | 2004-03-16 |
| 6096801 | Pigment compositions | Greig Chisholm | 2000-08-01 |
| 5916943 | Method of marking an article | Harry G. Heller | 1999-06-29 |