Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6387998 | Process for preparing a cationically modified (meth)acrylamide polymer and use of the polymer | Jonni Ahlgren, Jussi Nikkarinen | 2002-05-14 |
| 5695609 | Process for producing paper | Tore Anders Duvnas | 1997-12-09 |
| 4756801 | Paper-making method and a combination of ingredients to be used in it | Olli Jokinen, Pirkko Virta | 1988-07-12 |
| 4737491 | Wood preservative | Sirkka L. Leppavuori, Lauri J. Teivainen, Hakan E. Wikberg | 1988-04-12 |