Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11274019 | Wireless power transfer arrangement for an elevator car and an elevator | Pasi Raassina, Ilya Petrov, Pekka Perunka | 2022-03-15 |
| 11155439 | Elevator energy solution | Jouni Ratia, Markku Haivala | 2021-10-26 |
| 11084690 | Elevator comprising an electric linear motor | Tero Hakala, Ari Kattainen, Jussi Lähteenmäki, Jussi PERÄLÄ, Tero Purosto | 2021-08-10 |
| 10965224 | Method for levitation control of a linear motor, method for measuring a position of a linear motor, inductive sensing device, and elevator system | Henry Piitulainen, Tero Purosto | 2021-03-30 |
| 10689227 | Electric linear motor | Tuukka Korhonen, Tero Hakala, Pasi Raassina, Marko Hinkkanen, Seppo Saarakkala +2 more | 2020-06-23 |
| 10574166 | Electric linear motor for an elevator and method for controlling thereof | Pasi Raassina, Jussi Lähteenmäki, Marko Minkkinen, Tuukka Korhonen | 2020-02-25 |
| 7527127 | Elevator brake management system | Jari Osterman, Jarmo Myllynen, Simo Makimattila, Jukka Korpela, Joni Kiiski | 2009-05-05 |
| 6854565 | Method for monitoring the door mechanism of an elevator | Pekka Perälä, Riitta Partanen-Jokela, Pekka Torenius | 2005-02-15 |
| 5896948 | Reserve power system | Timo Lehtonen, Ralf Ekholm | 1999-04-27 |
| 5894910 | Procedure for controlling an elevator | Timo Lehtonen, Ralf Ekholm | 1999-04-20 |
| 5798490 | Procedure and apparatus for determining the position of an elevator car | Olavi Vairio, Jarmo Maenpaa | 1998-08-25 |
| 5712457 | Apparatus for regulating an elevator motor | Ralf Ekholm | 1998-01-27 |
| 5633773 | Overvoltage protection for input/output circuits | — | 1997-05-27 |
| 4908563 | Method and device for braking a squirrel-cage motor | — | 1990-03-13 |
| 4518062 | Procedure and measuring circuit for stopping an elevator | Heimo Makinen | 1985-05-21 |
| 4499972 | Speed control system for a motor with short-circuited rotor | Heimo Makinen | 1985-02-19 |
| 4349858 | Control circuit for use with an electronic guard strip | Pekka Torenius | 1982-09-14 |