Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4737164 | Process for recovering contaminants from gases | — | 1988-04-12 |
| 4488907 | Process for the preparation of lignosulfonate-based mixtures used in particular as additives of concrete | — | 1984-12-18 |
| 4336189 | Process for recovering lignosulfonates from spent sulfite liquor | Sirpa Hamala, Seppo Koivunen, Anna-Kaisa Kontturi | 1982-06-22 |