Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889592 | Process and apparatus for control in burning and slaking of lime and causticizing | Birgitta S. Andersson, Malin C. Zethraeus, Torbjorn Herngren | 1989-12-26 |
| 4683841 | Control of a black liquor recovery boiler | Susanne Andersson, Torbjorn Herngren, Staffan Carlsson, Gunnar Hage | 1987-08-04 |