Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6155210 | Process for obtaining flue gases with low content of NO.sub.x while combusting black liquor and a recovery boiler therefor | — | 2000-12-05 |
| 6071377 | Process for obtaining flue gases with low content of NO.sub.x in a black liquor recovery boiler | — | 2000-06-06 |
| 5911854 | Method of purifying electric precipitator ash using a pressure filter | — | 1999-06-15 |