Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6007872 | Method of producing impregnated wooden products | Lennart W. Castwall | 1999-12-28 |
| 5944878 | Multiple-element air filter | — | 1999-08-31 |
| 5904194 | Method for producing a hard wood element | Lennart W. Castwall | 1999-05-18 |
| 5741566 | Autoclavable multilayer films | Peter Hogstrom, Stefan Lundmark, Hannu Maasola | 1998-04-21 |
| 5678618 | Process for producing hard elements of wood | Lennart W. Castwall | 1997-10-21 |