Inventor · disambiguated record
Gerald Fenn
Also filed as: FENN GERALD
18 granted patents·2 pending applications·196 citations·filing 1992–2006
94Inventor score
Files withMANNESMANN SACHS AG8ZF SACHS AG7FICHTEL & SACHS AG2MANNESMAN SACHS AG2ZAHNRADFABRIK FRIEDRICHSHAFEN1
Top patents by PatentIndex Score
20 records- 0180US6540052B2Damping valve, in particular for a vibration damperMANNESMANN SACHS AG·Filed 2001·Granted Apr 1, 2003·25 cites·9 claims
- 0276US6336536B1Reversing valve with a passage which is dependent on the direction of flowMANNESMANN SACHS AG·Filed 2000·Granted Jan 8, 2002·19 cites·16 claims
- 0375US6634379B2Switching valve with flow direction-dependent cross-sectionMANNESMANN SACHS AG·Filed 2001·Granted Oct 21, 2003·18 cites·6 claims
- 0473US7392736B2Piston-cylinder unit with a protective sleeveZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 2006·Granted Jul 1, 2008·7 cites·7 claims
- 0568US6863277B2Piston ring for the piston of a vibration damperZF SACHS AG·Filed 2002·Granted Mar 8, 2005·12 cites·8 claims
- 0658US5314045AFluid connecting assemblyFICHTEL & SACHS AG·Filed 1992·Granted May 24, 1994·24 cites·10 claims
- 0754US6253661B1Piston rod guide for a piston-cylinder unitMANNESMAN SACHS AG·Filed 1999·Granted Jul 3, 2001·15 cites·11 claims
- 0852US6840153B2Fire protection in a piston-cylinder unitZF SACHS AG·Filed 2002·Granted Jan 11, 2005·5 cites·20 claims
- 0951US6079440AReversing valve with a cross section which is dependent on the direction of flowMANNESMAN SACHS AG·Filed 1998·Granted Jun 27, 2000·14 cites·19 claims
- 1050US6719297B2Piston ring, in particular for a piston of a vibration damperMANNESMANN SACHS AG·Filed 2001·Granted Apr 13, 2004·4 cites·19 claims
- 1148US6749177B2Damping valve for a shock absorberZF SACHS AG·Filed 2002·Granted Jun 15, 2004·2 cites·7 claims
- 1247US7121552B2Piston ringZF SACHS AG·Filed 2003·Granted Oct 17, 2006·2 cites·5 claims
- 1345US7182190B2Vibration damper with fire safety deviceZF SACHS AG·Filed 2004·Granted Feb 27, 2007·3 cites·7 claims
- 1445US6018868AMethod for manufacturing a pistonMANNESMANN SACHS AG·Filed 1998·Granted Feb 1, 2000·11 cites·5 claims
- 1541US6129005APiston for a piston-cylinder unitMANNESMANN SACHS AG·Filed 1998·Granted Oct 10, 2000·12 cites·4 claims
- 1641US2004221452A1Method for the manufacture of a pistonZF SACHS AG·Filed 2004·Application pending·0 cites
- 1739US5277284AContainer rod assemblyFICHTEL & SACHS AG·Filed 1992·Granted Jan 11, 1994·10 cites·38 claims
- 1838US2002158393A1Spring carrierZF SACHS AG·Filed 2002·Application pending·0 cites
- 1934US6003227AProcess for manufacturing a piston ringMANNESMANN SACHS AG·Filed 1997·Granted Dec 21, 1999·6 cites·3 claims
- 2033US6032961APiston-cylinder unit installed between a vehicle body and wheel guide partMANNESMANN SACHS AG·Filed 1998·Granted Mar 7, 2000·7 cites·8 claims
Join the waitlist — get patent alerts
Get an alert when Gerald Fenn files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →