Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10227121 | Propulsion system for aquatic vessels | Tuomas Riski, Heikki Juhani Huhtinen | 2019-03-12 |
| 9394043 | Propulsion system for aquatic vessels | Tuomas Riski | 2016-07-19 |
| 5052323 | Barge transport system | Tuomas Routa, Jan Kingo | 1991-10-01 |
| 4838190 | Passenger ship | — | 1989-06-13 |
| 4779552 | Ship construction | Pirjo Harsia, Dan Westerlund | 1988-10-25 |
| 4702187 | Bottom construction for a ship | Torsten Heideman, Pekka Salmi | 1987-10-27 |