Inventor
GRUNDEI MANFRED
DE20 patents
⚠️ This page may combine multiple inventors who share the name “GRUNDEI MANFRED”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FICHTEL & SACHS AG
11 patentsUS5398787AMar 21, 1995
Damping pilot valve having vibration damper-related characteristic curves
FICHTEL & SACHS AG137 citations98
US5785160AJul 28, 1998
Piston with direction-dependent advance opening cross sections
FICHTEL & SACHS AG33 citations92
US5509512AApr 23, 1996
Shock absorber with adjustable damping with controlled damping characteristics
FICHTEL & SACHS AG29 citations92
US4782925ANov 8, 1988
Double-tube vibration damper
FICHTEL & SACHS AG47 citations92
US4485899ADec 4, 1984
Shock absorber unit for vehicles
FICHTEL & SACHS AG28 citations92
US4401196AAug 30, 1983
Hydraulic vibration damper with noise reduction damping valves
FICHTEL & SACHS AG47 citations92
US5971117AOct 26, 1999
Piston-cylinder aggregate with displacement-dependent dampening force field
FICHTEL & SACHS AG69 citations91
US5615756AApr 1, 1997
Shock absorber for a motor vehicle, which shock absorber has a piston valve
FICHTEL & SACHS AG51 citations91
US4993524AFeb 19, 1991
Damping valve unit for a hydraulic oscillation damper
FICHTEL & SACHS AG41 citations91
US5730263AMar 24, 1998
Vibration damper
FICHTEL & SACHS AG17 citations81
US5655634AAug 12, 1997
Shock absorbers and vibration dampers; and shock absorbers and vibration dampers with a piston with a piston ring; and a cyclinder with a piston with a piston ring
FICHTEL & SACHS AG3 citations59
MANNESMANN SACHS AG
6 patentsUS6651787B2Nov 25, 2003
Vibration damper
MANNESMANN SACHS AG53 citations96
US6076814AJun 20, 2000
Spring strut for vehicles
MANNESMANN SACHS AG28 citations92
US5937976AAug 17, 1999
Vibration damper with restrictor plate
MANNESMANN SACHS AG39 citations92
US6206152B1Mar 27, 2001
Vibration damper with variable damping force
MANNESMANN SACHS AG35 citations91
US6540051B2Apr 1, 2003
Damping force device with adjustable damping force
MANNESMANN SACHS AG7 citations74
US6015030AJan 18, 2000
Vibration damper with variable damping force
MANNESMANN SACHS AG4 citations63