Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4336189 | Process for recovering lignosulfonates from spent sulfite liquor | Sirpa Hamala, Seppo Koivunen, Veli Sarkkinen | 1982-06-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4336189 | Process for recovering lignosulfonates from spent sulfite liquor | Sirpa Hamala, Seppo Koivunen, Veli Sarkkinen | 1982-06-22 |