| 8869945 |
Supplemental elevator safety system |
Ari Harkonen, Sakari Korvenranta, Ari Kattainen, Hannu Ahrnberg, Risto Jokinen |
2014-10-28 |
| 8373345 |
Control of the lighting of an elevator car |
Tatu Mattila, Seppo Ketoviita |
2013-02-12 |
| 8207700 |
Electric motor drive |
Ari Kattainen |
2012-06-26 |
| 7980363 |
Elevator safety arrangement having safety spaces |
Ari Kattainen, Kimmo Heikkilä |
2011-07-19 |
| 7896139 |
Guide-rail brake |
Tomi Torttila |
2011-03-01 |
| 7896138 |
Elevator arrangement |
Ari Kattainen |
2011-03-01 |
| 7891467 |
Elevator safety arrangement having safety spaces |
Ari Kattainen, Kimmo Heikkilä |
2011-02-22 |
| 7781997 |
Method and apparatus for braking a motor |
Antti Kallioniemi |
2010-08-24 |
| 7740110 |
Elevator brake and brake control circuit |
Ari Kattainen |
2010-06-22 |
| 7681694 |
Energy storage system for elevators |
Esko Aulanko, Sakari Korvenranta, Pekka Jahkonen |
2010-03-23 |
| 7617911 |
Method and system for detecting and stopping uncontrolled movement of an elevator car in an elevator |
Tatu Mattila, Seppo Ketoviita |
2009-11-17 |