Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5035772 | Method for treating bleached lignin containing cellulose pulp by reducing .alpha.-carbonyl and .gamma.-carbonyl groups and converting short-wave quanta to long-wave light quanta | Birgitta E. Lunden-Lundgren | 1991-07-30 |
| 4900399 | Method of manufacturing bleached chemi-mechanical and semichemical fibre pulp by a two-stage impregnation process | Goran Bengtsson, Rune Simonson | 1990-02-13 |
| 4756799 | Method of manufacturing bleached chemimechanical and semichemical fibre pulp by means of a one-stage impregnation process | Goran Bengtsson, Rune Simonson | 1988-07-12 |