Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4750590 | Counteracting elevator car oscillation | — | 1988-06-14 |
| 4742893 | Signalling procedure for a lift and a signalling system | Osmo Ivanto, Matti Kahkipuro, Urpo Sten | 1988-05-10 |
| 4700810 | Method of controlling an elevator | — | 1987-10-20 |
| 4499431 | Driver circuit configuration for the output stage of electronic power amplifiers | — | 1985-02-12 |
| 4458284 | Method for electrical and thermal protection of output devices of electronic amplifiers | — | 1984-07-03 |
| 4304995 | Method and apparatus for measuring the wall thickness in a plastic article | Paavo Huttunen, Jarmo Karvonen, Martti Karppinen, Esko Sohlo | 1981-12-08 |
| 4256991 | Electronic igniter for fluorescent lamps | — | 1981-03-17 |
| 4221260 | Control and measuring system for flat-individual heating/cooling and procedure for the system's calibration | Lauri Kuokkanen | 1980-09-09 |