Inventor · disambiguated record
Matti Kahkipuro
Also filed as: KAEHKIPURO MATTI · KAEHKIPURO MATTI J · KAHKIPURO MATTI · KAHKIPURO MATTI J
27 granted patents·1 pending application·570 citations·filing 1980–2012
97Inventor score
Top patents by PatentIndex Score
28 records- 0196US5679934AProgrammable operating panel for an elevator carKONE OY·Filed 1995·Granted Oct 21, 1997·132 cites·9 claims
- 0296US5027925AProcedure and apparatus for damping the vibrations of an elevator carKONE ELEVATOR GMBH·Filed 1989·Granted Jul 2, 1991·78 cites·12 claims
- 0386US6305501B1Elevator reluctance linear motor drive systemKONE CORP·Filed 1998·Granted Oct 23, 2001·59 cites·12 claims
- 0480US5042621AMethod and apparatus for the measurement and tuning of an elevator systemKONE ELEVATOR GMBH·Filed 1989·Granted Aug 27, 1991·30 cites·14 claims
- 0580US4880082AMethod for determining the position of an elevator car and a pulse count based floor selectorKONE ELEVATOR GBMH·Filed 1988·Granted Nov 14, 1989·39 cites·8 claims
- 0678US4894765ABi-directional d.c./d.c. converter compatible with an inverter bridgeKONE ELEVATOR GMBH·Filed 1989·Granted Jan 16, 1990·33 cites·28 claims
- 0776US4753323ASafety system for closing doorsKONE ELEVATOR GMBH·Filed 1987·Granted Jun 28, 1988·23 cites·4 claims
- 0873US5220981AElevator and a procedure for its controlKAEHKIPURO MATTI·Filed 1991·Granted Jun 22, 1993·28 cites·10 claims
- 0964US4742893ASignalling procedure for a lift and a signalling systemELEVATOR GMBH·Filed 1986·Granted May 10, 1988·22 cites·7 claims
- 1062US8471403B2Power supply arrangement of an elevatorKAEHKIPURO MATTI·Filed 2010·Granted Jun 25, 2013·4 cites·7 claims
- 1161US5194797AProcedure for the regulation of an asynchronous motorKONE ELEVATOR GMBH·Filed 1991·Granted Mar 16, 1993·21 cites·10 claims
- 1255US4684856AMethod and drive for elevator DC drive motor stabilizationELEVATOR GMBH·Filed 1984·Granted Aug 4, 1987·13 cites·1 claims
- 1353US4672277AElevator motor controlELEVATOR GMBH·Filed 1984·Granted Jun 9, 1987·11 cites·11 claims
- 1452US4804067AInverter control apparatus for elevator motorKAEHKIPURO MATTI·Filed 1987·Granted Feb 14, 1989·13 cites·10 claims
- 1551US4774650AMethod for directing power between three-phase mains and a d.c. circuitKONE ELEVATOR GMBH·Filed 1987·Granted Sep 27, 1988·14 cites·2 claims
- 1643US5523937AFrequency converter, procedure for controlling it and motor control using a frequency converterKONE OY·Filed 1993·Granted Jun 4, 1996·13 cites·17 claims
- 1739US4414619AProcedure and apparatus for switching thyristor bridges in static alternating current/direct conversionELEVATOR GMBH·Filed 1980·Granted Nov 8, 1983·6 cites·3 claims
- 1837US9679727B2Switch assemblyABB OY·Filed 2012·Granted Jun 13, 2017·0 cites·16 claims
- 1936US4663700AWay of placing chokes with air coreELEVATOR GMBH·Filed 1986·Granted May 5, 1987·5 cites·2 claims
- 2036US4393442AProcedure and means for monitoring current data in a thyristor-controlled direct current driveELEVATOR GMBH·Filed 1980·Granted Jul 12, 1983·6 cites·4 claims
- 2135US4380275AApparatus for interfacing weighing data with a lift control systemELEVATOR GMBH·Filed 1981·Granted Apr 19, 1983·5 cites·1 claims
- 2233US4737900AMethod of and apparatus for controlling the braking resistor of a frequency converterKONE ELEVATOR GMBH·Filed 1987·Granted Apr 12, 1988·5 cites·11 claims
- 2332US4791346AElevator motor controlKONE ELEVATOR GMBH·Filed 1987·Granted Dec 13, 1988·3 cites·3 claims
- 2430US2015369856A1Overvoltage protection element monitoringABBY OY·Filed 2012·Application pending·0 cites
- 2529US4621222AMethod for improving the dynamic converter drive for a direct current elevator motorELEVATOR GMBH·Filed 1985·Granted Nov 4, 1986·3 cites·4 claims
- 2628US4799139AVoltage regulation for three-phase invertersKONE ELEVATOR GMBH·Filed 1987·Granted Jan 17, 1989·4 cites·8 claims
- 2723US4466053AThyristor converter driveELEVATOR GMBH·Filed 1981·Granted Aug 14, 1984·0 cites·4 claims
- 2820US4635320AFloor selector for liftELEVATOR GMBH·Filed 1983·Granted Jan 13, 1987·0 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →