Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7481865 | Method for removing mercury from gas | Heljä Peltola, Pekka Taskinen, Heikki Takala, Harri Natunen, Jorma Panula | 2009-01-27 |
| 7452521 | Method for the removal of mercury from sulphuric acid with thiosulphate precipitation | Dag Berg, Aija Rytioja, Heljä Peltola, Pekka Taskinen | 2008-11-18 |
| 7044996 | Method for reducing build-up on a roasting furnace grate | Pekka Taskinen, Maija-Leena Metsarinta, Juha Jarvi, Heikki Siirilä | 2006-05-16 |
| 6926752 | Method for the stabilization of a fluidized bed in a roasting furnace | Pekka Taskinen, Maija-Leena Metsarinta, Aija Rytioja | 2005-08-09 |
| 6814571 | Arrangement and method for reducing build-up on a roasting furnace grate | Heikki Siirilä, Juha Jarvi | 2004-11-09 |
| 4366127 | Hydrometallurgical process for the recovery of lead, silver and gold, as well as zinc, from impure jarosite residues of an electrolytic zinc process | Jussi K. Rastas | 1982-12-28 |
| 4362702 | Hydrometallurgical process for the treatment of a raw material which contains oxide and ferrite of zinc, copper and cadmium | Jussi K. Rastas, Kauko Karpale, Lars-Goran Bjorkqvist | 1982-12-07 |