Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842689 | Method for controlling sulphite pulping and hydrolytic processes by means of rapid furfural analyzer | Nils-Erik Virkola | 1989-06-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842689 | Method for controlling sulphite pulping and hydrolytic processes by means of rapid furfural analyzer | Nils-Erik Virkola | 1989-06-27 |