Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6815065 | All-dielectric optical diffractive pigments | Alberto Argoitia, Paul T. Kohlmann | 2004-11-09 |
| 6676741 | Methods for producing enhanced interference pigments | Roger W. Phillips | 2004-01-13 |