Kahkipuro; Matti
Patent Applications and Registrations
Patent applications and USPTO patent grants for Kahkipuro; Matti.The latest application filed is for "overvoltage protection element monitoring".
- Kahkipuro; Matti - Hyvinkaa FI
- Kahkipuro; Matti - SF-05800 Hyvinkaa FI
- Kahkipuro; Matti - 05800 Hyvinkaa FI
| Patent | Date |
|---|---|
| Switch assembly Grant 9,679,727 - Takala , et al. June 13, 2 | 2017-06-13 |
| Overvoltage Protection Element Monitoring App 20150369856 - Takala; Marko ; et al. | 2015-12-24 |
| Switch Assembly App 20150340185 - Takala; Marko ; et al. | 2015-11-26 |
| Power supply arrangement of an elevator Grant 8,471,403 - Kahkipuro , et al. June 25, 2 | 2013-06-25 |
| Power Supply Arrangement Of An Elevator App 20110068629 - KAHKIPURO; Matti ; et al. | 2011-03-24 |
| Programmable operating panel for an elevator car Grant 5,679,934 - Juntunen , et al. October 21, 1 | 1997-10-21 |
| Frequency converter, procedure for controlling it and motor control using a frequency converter Grant 5,523,937 - Kahkipuro June 4, 1 | 1996-06-04 |
| Elevator and a procedure for its control Grant 5,220,981 - Kahkipuro , et al. June 22, 1 | 1993-06-22 |
| Procedure for the regulation of an asynchronous motor Grant 5,194,797 - Kahkipuro March 16, 1 | 1993-03-16 |
| Method and apparatus for the measurement and tuning of an elevator system Grant 5,042,621 - Ovaska , et al. August 27, 1 | 1991-08-27 |
| Bi-directional d.c./d.c. converter compatible with an inverter bridge Grant 4,894,765 - Kahkipuro January 16, 1 | 1990-01-16 |
| Method for determining the position of an elevator car and a pulse count based floor selector Grant 4,880,082 - Kahkipuro , et al. November 14, 1 | 1989-11-14 |
| Inverter control apparatus for elevator motor Grant 4,804,067 - Kahkipuro February 14, 1 | 1989-02-14 |
| Elevator motor control Grant 4,791,346 - Kahkipuro December 13, 1 | 1988-12-13 |
| Signalling procedure for a lift and a signalling system Grant 4,742,893 - Otala , et al. May 10, 1 | 1988-05-10 |
| Method of and apparatus for controlling the braking resistor of a frequency converter Grant 4,737,900 - Kahkipuro , et al. April 12, 1 | 1988-04-12 |
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