Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5605604 | Method of reducing the resin content in sulfite pulp | Hans Arne, Goran Tidstam | 1997-02-25 |
| 5415734 | Process for bleaching pulp without using chlorine containing chemicals | Ake Backlund, Stig Andtbacka | 1995-05-16 |