Inventor · disambiguated record
Stephen Kempfer
Also filed as: KEMPFER STEPHEN · KEMPFER STEPHEN T · KEMPFER STEPHEN THOMAS
18 granted patents·5 pending applications·467 citations·filing 1992–2008
95Inventor score
Top patents by PatentIndex Score
23 records- 0194US5237975AReturnless fuel delivery systemFORD MOTOR CO·Filed 1992·Granted Aug 24, 1993·153 cites·10 claims
- 0293US7066152B2Low evaporative emission fuel system depressurization via solenoid valveFORD MOTOR CO·Filed 2004·Granted Jun 27, 2006·57 cites·22 claims
- 0392US5477829AAutomotive returnless fuel system pressure valveFORD MOTOR CO·Filed 1994·Granted Dec 26, 1995·105 cites·1 claims
- 0483US6467698B2Vehicles containing water-producing fuel cells, and methods for using water produced by the fuel cellsVISTEON GLOBAL TECH INC·Filed 2001·Granted Oct 22, 2002·36 cites·21 claims
- 0577US6675573B2Vehicles containing and methods for using a pre-heater to reduce emissions, and for warming fuel cells at low ambient temperaturesVISTEON GLOBAL TECH INC·Filed 2001·Granted Jan 13, 2004·18 cites·29 claims
- 0676US6783336B2Fuel sender assemblyVISTEON GLOBAL TECH INC·Filed 2002·Granted Aug 31, 2004·18 cites·10 claims
- 0767US7165932B2Fuel pump having dual single sided impellerVISTEON GLOBAL TECH INC·Filed 2005·Granted Jan 23, 2007·5 cites·24 claims
- 0867US6840270B2Low deviation pressure relief valve for fuel pumpsVISTEON GLOBAL TECH INC·Filed 2002·Granted Jan 11, 2005·15 cites·16 claims
- 0965US7559315B1Regenerative fuel pumpFORD GLOBAL TECH LLC·Filed 2008·Granted Jul 14, 2009·4 cites·19 claims
- 1065US7302938B2Mechanical returnless fuel systemFORD MOTOR CO·Filed 2003·Granted Dec 4, 2007·13 cites·6 claims
- 1160US6953026B2Pressure regulating valve for automotive fuel systemVISTEON GLOBAL TECH INC·Filed 2003·Granted Oct 11, 2005·10 cites·12 claims
- 1260US6890144B2Low noise fuel pump designVISTEON GLOBAL TECH INC·Filed 2002·Granted May 10, 2005·10 cites·23 claims
- 1360US6644932B2Hybrid electric/mechanical compressor with gear reducerVISTEON GLOBAL TECH INC·Filed 2001·Granted Nov 11, 2003·6 cites·19 claims
- 1456US7086838B2Fuel system with a field modification module for controlling fuel flowFORD MOTOR CO·Filed 2004·Granted Aug 8, 2006·4 cites·27 claims
- 1552US7185682B2Fuel flange assembly for a vehicle fuel systemVISTEON GLOBAL TECH INC·Filed 2004·Granted Mar 6, 2007·7 cites·23 claims
- 1652US6984099B2Fuel pump impellerVISTEON GLOBAL TECH INC·Filed 2003·Granted Jan 10, 2006·6 cites·9 claims
- 1744US2006275137A1Fuel pump boost systemVISTEON GLOBAL TECH INC·Filed 2005·Application pending·0 cites
- 1837US8267668B2Fuel pump motor using carbon commutator having reduced filmingNATION THOMAS C·Filed 2006·Granted Sep 18, 2012·0 cites·17 claims
- 1937US2004101427A1Gerotor fuel pump having primary and secondary inlet and outlet portingsVISTEON GLOBAL TECH INC·Filed 2002·Application pending·0 cites
- 2035US7045983B2System for controlling motor speed by altering magnetic field of the motorFORD MOTOR CO·Filed 2004·Granted May 16, 2006·0 cites·14 claims
- 2134US2004094131A1Fuel delivery check valve for automotive applicationVISTEON GLOBAL TECH INC·Filed 2002·Application pending·0 cites
- 2233US2006000454A1In-tank fuel supply unit having long life filterVISTEON GLOBAL TECH INC·Filed 2004·Application pending·0 cites
- 2330US2004250795A1Managing fuel volume change in fuel railVISTEON GLOBAL TECH INC·Filed 2004·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →