Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8557881 | Wood composite material and method for making same | Liisa Lehtinen, Markku Koivisto | 2013-10-15 |
| 8474736 | Method and device for producing chaff and wood composite material | Liisa Lehtinen, Sami Kirvesoja | 2013-07-02 |