Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |