Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7094319 | Additive for paper making | Tapio Vihervaara, Veikko Niinivaara | 2006-08-22 |
| 7045563 | Additive composition for paper making | — | 2006-05-16 |
| 6716313 | Additive for paper making | Tapio Vihervaara, Veikko Niinivaara | 2004-04-06 |
| 6398912 | Additive for paper making | Tapio Vihervaara, Veikko Niinivaara | 2002-06-04 |