Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5788813 | Clarifying and/or filtering of green liquor and an apparatus therefore | Holger Engdahl, Martti Pokkinen | 1998-08-04 |
| 5620596 | Falling film cross filtration apparatus | Holger Engdahl | 1997-04-15 |
| 5618443 | Clarification of green liquor by falling film cross-flow filtration | Holger Engdahl | 1997-04-08 |
| 4771712 | Combustion of fuel containing alkalines | Folke Engstrom, Erkki Kiiskila | 1988-09-20 |