Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5980589 | High activity sulfonated lignin dye dispersants | Peter Dilling | 1999-11-09 |
| 5755830 | Method of preparing high activity sulfonated lignin dye dispersants | Peter Dilling | 1998-05-26 |
| 5749926 | Method of preparing high activity sulfonated lignin dye dispersants | Peter Dilling | 1998-05-12 |