Inventor
LIEBETRAU CHRISTOPH
CH28 patents
⚠️ This page may combine multiple inventors who share the name “LIEBETRAU CHRISTOPH”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
INVENTIO AG
27 patentsUS5833031ANov 10, 1998
Appendable elevator system
INVENTIO AG29 citations92
US5988930ANov 23, 1999
Connecting apparatus for profile members
INVENTIO AG47 citations90
US7398863B2Jul 15, 2008
Safety device for elevators
INVENTIO AG40 citations89
US5713432AFeb 3, 1998
Drive frame for a self-propelled elevator car
INVENTIO AG37 citations89
US7077241B1Jul 18, 2006
Elevator installation with flat-belt-type suspension means arranged in parallel
INVENTIO AG26 citations86
US5937973AAug 17, 1999
Brake triggering device
INVENTIO AG18 citations84
US6516570B2Feb 11, 2003
Elevator hoistway
INVENTIO AG15 citations83
US7775325B2Aug 17, 2010
Drive for an elevator installation and method of converting a drive in an elevator installation
INVENTIO AG8 citations82
US6102163AAug 15, 2000
Elevator car with control box
INVENTIO AG18 citations82
US5769183AJun 23, 1998
Drive unit for a self-propelled elevator car
INVENTIO AG18 citations81
US5636712AJun 10, 1997
Apparatus for driving a self-propelled elevator
INVENTIO AG19 citations81
US5725074AMar 10, 1998
Apparatus for supporting and guiding an elevator
INVENTIO AG15 citations73
US5615864AApr 1, 1997
Elevator hoist apparatus with torque support device
INVENTIO AG11 citations73
US6032763AMar 7, 2000
Equipment for immobilizing an elevator car
INVENTIO AG11 citations72
US6006867ADec 28, 1999
Elevator guide apparatus
INVENTIO AG12 citations72
US5844180ADec 1, 1998
Equipment for the production of elevator shaft information
INVENTIO AG13 citations66
US12139373B2Nov 12, 2024
Elevator system
INVENTIO AG0 citations62
US12091284B2Sep 17, 2024
Elevator system
INVENTIO AG0 citations62
US11970362B2Apr 30, 2024
Fastening apparatus for fastening a drive of an elevator system
INVENTIO AG0 citations62
US10266369B2Apr 23, 2019
Energy-autonomous elevator system control element and elevator system including the control element
INVENTIO AG1 citations62
US12286329B2Apr 29, 2025
Elevator installation and operating and/or display panel for an elevator installation
INVENTIO AG0 citations61
US6012553AJan 11, 2000
Mount for a lift cage safety device
INVENTIO AG5 citations61
US7624847B2Dec 1, 2009
Drive for an elevator installation
INVENTIO AG5 citations60
US7665580B2Feb 23, 2010
Equipment for suspension of a car or counter weight in an elevator installation and methods for mounting and for maintenance of suspension means
INVENTIO AG6 citations56
US12565403B2Mar 3, 2026
Elevator system with simplified power supply for shaft door assemblies
INVENTIO AG0 citations50
US7617912B2Nov 17, 2009
Method and apparatus for operating an elevator system
INVENTIO AG0 citations45
US10023436B2Jul 17, 2018
Drive with multiple looping for an elevator installation
INVENTIO AG0 citations42