Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5585040 | Conductive plastics material and a method for its preparation | Pauli Kirmanen, Esko Savolainen, Esa Virtanen, Toivo Karna, Jukka Laakso +3 more | 1996-12-17 |
| 5507977 | Conducting plastic material and method of producing such material | Esa Virtanen | 1996-04-16 |