Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6517793 | Method of reducing Nox compounds in flue gases of recovery boiler | Seppo Tuominiemi, Risto Hämäläinen | 2003-02-11 |
| 6109911 | Method and arrangement for optimizing oxidation during burning of gaseous and liquid fuels | Risto Syrjalainen, Heikki Koivuniemi, Erkki Välimäki | 2000-08-29 |
| 5639434 | Process for removing nitrogen oxides from the flue gases of a pulp mill | Tapio Patrikainen, Seppo Tuominiemi, Esa Pikkujamsa, Jukka-Pekka Spets, Risto Hämäläinen | 1997-06-17 |