Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7136048 | Electrically erasable writing surface | Jukka Yrjanainen, Jari Kangas | 2006-11-14 |
| 7057591 | Advertising using an eBook with a bistable display | Kimmo Djupsjobacka, Ari Aarnio | 2006-06-06 |
| 6954735 | Method and system of shopping with a mobile device to purchase goods and/or services | Kimmo Djupsjobacka, Pekka Ollikainen, Esa Erola, Erkki Tanskanen, Llari Saarikivi +4 more | 2005-10-11 |