Inventor
FENN GERALD
DE18 patents
⚠️ This page may combine multiple inventors who share the name “FENN GERALD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MANNESMANN SACHS AG
8 patentsUS6540052B2Apr 1, 2003
Damping valve, in particular for a vibration damper
MANNESMANN SACHS AG25 citations89
US6634379B2Oct 21, 2003
Switching valve with flow direction-dependent cross-section
MANNESMANN SACHS AG18 citations82
US6336536B1Jan 8, 2002
Reversing valve with a passage which is dependent on the direction of flow
MANNESMANN SACHS AG19 citations82
US6032961AMar 7, 2000
Piston-cylinder unit installed between a vehicle body and wheel guide part
MANNESMANN SACHS AG7 citations73
US6018868AFeb 1, 2000
Method for manufacturing a piston
MANNESMANN SACHS AG11 citations72
US6129005AOct 10, 2000
Piston for a piston-cylinder unit
MANNESMANN SACHS AG12 citations66
US6719297B2Apr 13, 2004
Piston ring, in particular for a piston of a vibration damper
MANNESMANN SACHS AG4 citations60
US6003227ADec 21, 1999
Process for manufacturing a piston ring
MANNESMANN SACHS AG6 citations58
ZF SACHS AG
5 patentsUS6863277B2Mar 8, 2005
Piston ring for the piston of a vibration damper
ZF SACHS AG12 citations84
US7121552B2Oct 17, 2006
Piston ring
ZF SACHS AG2 citations62
US6749177B2Jun 15, 2004
Damping valve for a shock absorber
ZF SACHS AG2 citations62
US6840153B2Jan 11, 2005
Fire protection in a piston-cylinder unit
ZF SACHS AG5 citations60
US7182190B2Feb 27, 2007
Vibration damper with fire safety device
ZF SACHS AG3 citations59