Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4892587 | Lignosulfonate additive-containing carbon black compositions | Peter Dilling, Catherine C. Cashman | 1990-01-09 |
| 4892588 | Production of lignosulfonate additives | Peter Dilling, Vaughn R. Loeffler, Karin U. Thomas | 1990-01-09 |
| 4355996 | Azo dye reduction improvement of lignin | Peter Dilling | 1982-10-26 |