Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11661313 | Drive device having safety circuits using logic states for an elevator | Pasi Raassina, Arto Nakari, Ari Kattainen, Juhamatti Nikander, Olavi Vairio | 2023-05-30 |
| 9604819 | Elevator monitoring arrangement configured to monitor operation of a safety device of an elevator, a controller and method for performing same | Ari Kattainen, Jyrki Laaksonheimo | 2017-03-28 |
| 8471403 | Power supply arrangement of an elevator | Matti Kahkipuro, Joni Tähtinen, Jari Helvilä | 2013-06-25 |
| 8177033 | Transportation system with capacitive energy storage and non-volatile memory for storing the operational state of the transportation system upon detection of the operational anomaly in power | Tuukka Kauppinen, Jyrki Laaksonheimo | 2012-05-15 |
| 4799139 | Voltage regulation for three-phase inverters | Matti Kahkipuro, Urpo Sten, Pekka Nummi | 1989-01-17 |