Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6270738 | Process for preparing usable products from an impure ferric sulfate solution | Simo Jokinen, Stefan Jafverstrom | 2001-08-07 |
| 5766566 | Process for preparing ferric sulfate | Harri Mattila, Olli Konstari | 1998-06-16 |
| 5002743 | Process for the removal of sulfur dioxide from hot flue gases | Kari Kokkonen, Seppo Tuominiemi, Hannu Alppi | 1991-03-26 |
| 4985081 | Method of producing cement or concrete | Heikki Ahonen, Pertti Kokkonen | 1991-01-15 |
| 4927613 | Process for removing a constituent from a hot gas stream by exothermic ionic reaction of the constituent with a reactant provided in fine particulate form | Sirpa Hamala, Matti Wilhelm Heikkilä, Jouko Laine, Kari Kokkonen | 1990-05-22 |
| 4788047 | Process for causing the gaseous sulfur compounds of flue gases to react to form solid compounds which can be separated from the flue gases | Sirpa Hamala, Pentti Janka, Tuomo Ruohola, Martti Lehtimaki | 1988-11-29 |