Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5346649 | Conducting polymer material and method for its production | Toivo Karna, Kalle Levon, Esko Savolainen | 1994-09-13 |
| 5340499 | Electrically conductive compositions and methods for their preparation | Toivo Karna, Timo Niemi, Heikki Ruohonen, Esko Savolainen, Helge Lindstrom +3 more | 1994-08-23 |
| 5279769 | Method for preparing a conductive polymer | Timo Kokkonen, Toivo Karna, Per Nyholm, Jan-Erik sterholm, Henrik Stubb | 1994-01-18 |