Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6258208 | Method for complex treatment of pulp in conjunction with a chlorine dioxide stage | Otto S. A. G. Lindeberg, Lars A. G. Ahlenius, Jan G. Liden | 2001-07-10 |
| 6126782 | Method for non-chlorine bleaching of cellulose pulp with a totally closed counter-current liquid circuit | Jan G. Liden, Lars A. G. Ahlenius, Otto S. A. G. Lindeberg | 2000-10-03 |
| 6039837 | Method of bleaching pulp with ozone wherein the acidity is maintained with an acid solution prepared by electrolysis or electrodialysis | Rolf C. A. Brannland | 2000-03-21 |
| 5423958 | Acidity control in chlorine dioxide manufacture | Rolf C. A. Brannland | 1995-06-13 |
| 4592804 | Method for pre-treating lignocellulosic material in two steaming zones | Hans Lundberg, Lars Uhlin, Bengt Lindquist | 1986-06-03 |