Inventor
DOEPFERT HAGEN
DE14 patents
⚠️ This page may combine multiple inventors who share the name “DOEPFERT HAGEN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ZAHNRADFABRIK FRIEDRICHSHAFEN
13 patentsUS7824302B2Nov 2, 2010
Multi-speed transmission
ZAHNRADFABRIK FRIEDRICHSHAFEN23 citations90
US11261943B2Mar 1, 2022
Planet-type multi-stage transmission for a bicycle or pedelec
ZAHNRADFABRIK FRIEDRICHSHAFEN4 citations70
US12503199B2Dec 23, 2025
Assembly for actuating a shifting element of a transmission
ZAHNRADFABRIK FRIEDRICHSHAFEN0 citations57
US12434788B2Oct 7, 2025
Bottom-bracket gear
ZAHNRADFABRIK FRIEDRICHSHAFEN0 citations57
US12264725B2Apr 1, 2025
Device for transmitting torque and axially securing two torque-transmitting components
ZAHNRADFABRIK FRIEDRICHSHAFEN0 citations51
US12584542B2Mar 24, 2026
Transmission and drive train for a motor vehicle
ZAHNRADFABRIK FRIEDRICHSHAFEN0 citations50
US12392401B2Aug 19, 2025
Transmission for a drive train of a vehicle
ZAHNRADFABRIK FRIEDRICHSHAFEN0 citations50
US12337931B2Jun 24, 2025
Bottom bracket gear mechanism of planetary design for a bicycle or a pedelec
ZAHNRADFABRIK FRIEDRICHSHAFEN0 citations50
US12296919B2May 13, 2025
Bottom bracket gear mechanism of planetary design for a bicycle or a pedelec
ZAHNRADFABRIK FRIEDRICHSHAFEN0 citations50
US12188542B2Jan 7, 2025
Transmission for a power train of a motor vehicle, and power train having such a transmission
ZAHNRADFABRIK FRIEDRICHSHAFEN0 citations50
US12291304B2May 6, 2025
Gear set assembly and bicycle gearing system
ZAHNRADFABRIK FRIEDRICHSHAFEN0 citations46
US12326185B2Jun 10, 2025
Power train for a motor vehicle
ZAHNRADFABRIK FRIEDRICHSHAFEN0 citations45
US10302146B2May 28, 2019
Jaw clutch
ZAHNRADFABRIK FRIEDRICHSHAFEN0 citations35