Ralf Ekholm

Person

Helsinki, FI

People

Patents Grantslast 30 patents

Information Patent Grant
Reserve power system
- Patent number 5,896,948
- Issue date Apr 27, 1999
- Kone Oy
- Seppo Suur-Askola
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Procedure for controlling an elevator
- Patent number 5,894,910
- Issue date Apr 20, 1999
- Kone Oy
- Seppo Suur-Askola
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Apparatus for regulating an elevator motor
- Patent number 5,712,457
- Issue date Jan 27, 1998
- Kone Oy
- Seppo Suur-Askola
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Selection of an elevator for service based on passenger location an...
- Patent number 5,239,142
- Issue date Aug 24, 1993
- Kone Elevator GmbH
- Ralf Ekholm
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Vertical transport system in a building
- Patent number 5,107,962
- Issue date Apr 28, 1992
- Kone Elevator GmbH
- Ralf Ekholm
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Method for sub-zoning an elevator group
- Patent number 4,895,223
- Issue date Jan 23, 1990
- Kone Elevator GmbH
- Ralf Ekholm
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Procedure for modernizing the control system of a lift
- Patent number 4,844,204
- Issue date Jul 4, 1989
- Kone Elevator GmbH
- Seppo Ovaska
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Method for coordinating elevator group traffic
- Patent number 4,838,385
- Issue date Jun 13, 1989
- Kone Elevator GmbH
- Ralf Ekholm
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Lift battery control system
- Patent number 4,346,789
- Issue date Aug 31, 1982
- Elevator GmbH
- Ralf C. Ekholm
- B66 - HOISTING LIFTING HAULING

Ralf Ekholm

Person

Patents Grantslast 30 patents

Reserve power system

Procedure for controlling an elevator

Apparatus for regulating an elevator motor

Selection of an elevator for service based on passenger location an...

Vertical transport system in a building

Method for sub-zoning an elevator group

Procedure for modernizing the control system of a lift

Method for coordinating elevator group traffic

Lift battery control system