Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9499281 | Landing arresting system for vertical take-off and landing (VTOL) aerial vehicles, landing and take-off platform for VTOL aerial vehicles and VTOL locking member for aerial vehicles | Per-Erik Cardell | 2016-11-22 |
| 9073636 | Rotor damper and tail rotor with such a rotor damper | Per-Erik Cardell, Tommy Johansson, Johan Lindroth | 2015-07-07 |
| 9067677 | Dismountable helicopter | Per-Erik Cardell, Robert Lidström | 2015-06-30 |
| 8944764 | Main rotor arrangement of an UAV-helicopter | Per-Erik Cardell | 2015-02-03 |