Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5352857 | Procedure for modernizing an elevator group | — | 1994-10-04 |
| 5313549 | Procedure for filtering the speed feedback signal | — | 1994-05-17 |
| 5042621 | Method and apparatus for the measurement and tuning of an elevator system | Matti Kahkipuro | 1991-08-27 |
| 4940117 | Procedure for the tuning of the position controller of an elevator | — | 1990-07-10 |
| 4844204 | Procedure for modernizing the control system of a lift | Ralf Ekholm | 1989-07-04 |
| 4797675 | Procedure for counting moving objects as they stop | — | 1989-01-10 |