Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7182835 | Two-stage chlorine bleaching process with filtrate recirculation | Solveig Norden, Gunnar Carré | 2007-02-27 |
| 5589031 | Chlorine dioxide bleaching of chemical pulp | Per-åke Farnstrand, Lars Sjodin, K. Solveig E. Norden | 1996-12-31 |
| 4451332 | Method for delignification of ligno-cellulose containing fiber material with an alkali-oxygen extraction stage | Goran E. Annergren, Tjell-Ake Hagglund, Per-Olov Lindblad, Lars E. Nasman | 1984-05-29 |