Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7019121 | Process for conditioning azo pigments | Edward Sung, George H. Robertson | 2006-03-28 |
| 6537362 | Polyphosphoric acid swelling of organic pigments | Edward Sung, George H. Roberston, Veronica L. Chambers | 2003-03-25 |
| 6402829 | Process for preparing a substantially pure gamma phase quinacridone pigment of large particle size | Edward Sung, George H. Robertson | 2002-06-11 |