Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5674359 | Continuous cooking of cellulosic fibrous material with cold alkali impregnation | R. Fred Chasse, Bruno Marcoccia | 1997-10-07 |
| 5660686 | Cooking with spent liquor pretreatment of cellulose material | Pekka Tervola | 1997-08-26 |
| 5635026 | Cooking cellulose material with high alkali concentrations and/or high pH | Auvo Kettunen, Aki Vilpponen, Jian E. Jiang, Bruno Marcoccia | 1997-06-03 |
| 5607545 | Ozone bleaching process utilizing a fluidizing mixer and super-atmospheric pressure | Brian F. Greenwood | 1997-03-04 |