Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10322403 | Coating for reducing nitrogen oxides | — | 2019-06-18 |
| 9765661 | Coating for particulate filters | Marja-Liisa KÄRKKÄINEN, Pasi Juvonen, Pekka Matilainen | 2017-09-19 |
| 8337762 | Substrate having porous sheet(s) for treating exhaust gases of combustion engines | Aulis Vakkilainen, Reijo Lylykangas, Ritva Heikkinen, Matti Härkönen, Ari Lievonen | 2012-12-25 |
| 8337793 | Removal of ammonia from fluids | Matti Härkönen | 2012-12-25 |
| 6818582 | Adsorbent catalyst | — | 2004-11-16 |
| 5580533 | Catalyst and process for purifying diesel exhaust gases | Matti Kivioja, Sointu Ravola, Thomas Benedict Slotte, Matti H ark onen, Pirkko Virta | 1996-12-03 |
| 5071634 | Process for the preparation of hydrogen peroxide (I) | Eva-Liisa Mustonen, Ilkka Turunen, Pirkko Virta | 1991-12-10 |