Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5757726 | Flextensional acoustic source for offshore seismic exploration | Rune Tenghamn, Magnus Zetterlund | 1998-05-26 |
| 5757728 | Acoustic transmitter | Rune Tenghamn, Magnus Zetterlund | 1998-05-26 |
| 5457752 | Drive system for acoustic devices | Goran Engdahl, Jan Hidman, Rune Tenghamn | 1995-10-10 |
| 5329499 | Acoustic transmitter | Rune Tenghamn, Magnus Zetterlund | 1994-07-12 |
| 5296662 | Electric switching device | Goran Engdahl, Ingvar Niemi | 1994-03-22 |
| 4927334 | Liquid pump driven by elements of a giant magnetostrictive material | Goran Engdahl | 1990-05-22 |