Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9475833 | Method for lignin separation from black liquor comprising removal of sulfur compounds from formed water effluent | Henrik Wallmo | 2016-10-25 |
| 9266917 | Method for lignin separation from black liquor having multiple acidification steps | Peter Björklund, Henrik Wallmo | 2016-02-23 |
| 9175438 | Method for lignin separation from black liquor involving multiple acidification steps | Mattias Svensson, Henrik Wallmo, Fredrik Ohman, Per Tomani, Lars-Erik ÅKERLUND | 2015-11-03 |
| 9067959 | Method for precipitating lignin from black liquor by utilizing waste gases | Anders Littorin, Henrik Wallmo, Hanna Kristina Karlsson | 2015-06-30 |
| 6162408 | Process for purifying ash which principally consists of sodium sulphate from a recovery boiler | — | 2000-12-19 |
| 5993601 | Process for producing polysulphide by means of oxidizing sulphide in spent liquors from kraft cellulose cooking | Olle Wennberg | 1999-11-30 |
| 5972228 | "Filters employing ""filling bodies"" to reduce the amount of backwashing fluid remaining in the filters after backwashing" | Magnus Ingelman, Hans Karlsson, Per-Gustaf LARSSON, Anita Markusson | 1999-10-26 |
| 5644996 | Method and arrangement for reburning lime sludge in a fluidizing bed | Charlotta Hanson | 1997-07-08 |