Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6471765 | Dispersant compositions improving the heat stability of transparent pigments | — | 2002-10-29 |
| 6444807 | Substituted phthalocyanine | Annemarie Wolleb, Heinz Wolleb, Barbara Wagner | 2002-09-03 |
| 6423839 | Mixed color pigment precursors and their use | Veronique Hall-Goulle | 2002-07-23 |