Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7094319 | Additive for paper making | Tapio Vihervaara, Kari Luukkonen | 2006-08-22 |
| 6716313 | Additive for paper making | Tapio Vihervaara, Kari Luukkonen | 2004-04-06 |
| 6398912 | Additive for paper making | Tapio Vihervaara, Kari Luukkonen | 2002-06-04 |