Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10106373 | Elevator brake controller for modulating DC voltage | — | 2018-10-23 |
| 9873591 | Brake controller, elevator system and a method for performing an emergency stop with an elevator hoisting machine driven with a frequency converter | Ari Kattainen, Pasi Raassina, Tapio Saarikoski, Lauri Stolt, Antti Kallioniemi | 2018-01-23 |