Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |