Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8841872 | Method and arrangement in connection with electric device system | Reijo Virtanen, Jorma Keronen | 2014-09-23 |
| 8780591 | Frequency converter assembly | Jukka Ylppö | 2014-07-15 |
| 8581528 | Arrangement and method for controlling frequency converter modules | Ilkka Tunkkari | 2013-11-12 |
| 8400087 | Method and arrangement for determining rotation speed of a motor | Reijo Virtanen | 2013-03-19 |
| 7671548 | Electric drive system | — | 2010-03-02 |
| 7279802 | Method in a wind power plant | — | 2007-10-09 |
| 7023160 | Method for controlling doubly-fed machine | Reijo Virtanen | 2006-04-04 |
| 6999329 | Temperature monitoring of parallel-connected inverter modules | Simo Poyhonen | 2006-02-14 |
| 6909254 | Deceleration during mains break | Heikki Saari, Aarne Mielonen | 2005-06-21 |