Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4748235 | Method of producing improved amine salts of lignosulfonates | Peter Dilling | 1988-05-31 |
| 4715864 | Lignosulfonate salts for use as dyestuff additives | Peter Dilling | 1987-12-29 |