Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11411399 | Arrangement and method for a power bus | Stefan Strandberg | 2022-08-09 |
| 11309803 | Power converter for trasmitting power between networks | Stefan Schroeder, Dan Isaksson, Stefan Strandberg | 2022-04-19 |
| 10742179 | Power amplifier | Lauri Juhani Salmia, Petri J. Mäki-Ontto | 2020-08-11 |
| 10495145 | Active magnetic bearing controller | Lauri Juhani Salmia, Juha Tuomas Saari, Petri J. Mäki-Ontto | 2019-12-03 |
| 8890448 | Braking apparatus, electric drive, and elevator system | Esa Putkinen, Antti Kallioniemi, Juha-Matti Nikander, Paavo Merilinna | 2014-11-18 |
| 8736204 | Transfer apparatus for electric power | Nicklas Södö | 2014-05-27 |
| 8553432 | Power transmission method and power transmission apparatus | Hannu Saren | 2013-10-08 |
| 7804288 | Current measuring arrangement of a frequency converter | Jaakko Ollila, Lasse Kortelahti | 2010-09-28 |
| 7742321 | Measurement of the current of a frequency converter | Hannu Saren, Jaakko Ollila | 2010-06-22 |
| 7688603 | Arrangement for monitoring a frequency converter | Janne Pakkala | 2010-03-30 |
| 7430101 | Overvoltage protection of a frequency converter | Trygve Björkgren | 2008-09-30 |
| 7275021 | Measuring method and arrangement | Jorma Vesti, Stefan Strandberg | 2007-09-25 |
| 7200018 | Charging of a filter capacitor in the intermediate circuit of a frequency converter | — | 2007-04-03 |
| 7176674 | Measurement of energy by means of a frequency converter | Veijo Karppinen | 2007-02-13 |
| 7176804 | Protection of power semiconductor components | Juha Norrena | 2007-02-13 |
| 7102333 | Control of the mains bridge of a frequency converter to regenerate energy from the motor to the supply | — | 2006-09-05 |
| 7061759 | Arrangement for the placement of frequency converters | Veijo Karppinen | 2006-06-13 |
| 7035123 | Frequency converter and its control method | Dejan Schreiber, Olli Pyrhonen, Pertti Silventoinen | 2006-04-25 |
| 6885171 | Compensation of reactive power via a frequency converter | Veijo Karppinen | 2005-04-26 |
| 6807074 | Control of an inverter | Jaakko Ollila | 2004-10-19 |
| 4566051 | Inverter protected in respect of the rates of increase of current and voltage | — | 1986-01-21 |