SK

Stephen Kempfer

VT Visteon Global Technologies: 10 patents #56 of 1,929Top 3%
Ford: 8 patents #2,217 of 17,473Top 15%
Overall (All Time): #258,623 of 4,157,543Top 7%
18
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
8267668 Fuel pump motor using carbon commutator having reduced filming Thomas C. Nation, James Knight, James Thompson 2012-09-18
7559315 Regenerative fuel pump DeQuan Yu, Sheven Sharp, Harold L. Castle, Robert Joseph Pyle 2009-07-14
7302938 Mechanical returnless fuel system DeQuan Yu 2007-12-04
7185682 Fuel flange assembly for a vehicle fuel system Taylor Riegel, Daven Bhavsar, Jason Schultz, Matthew Wiethoff 2007-03-06
7165932 Fuel pump having dual single sided impeller DeQuan Yu, Paul Fisher, Harold L. Castle 2007-01-23
7086838 Fuel system with a field modification module for controlling fuel flow James Thompson, DeQuan Yu 2006-08-08
7066152 Low evaporative emission fuel system depressurization via solenoid valve Kathleen Stroia, DeQuan Yu, Matti K. Vint, Ross Dykstra Pursifull 2006-06-27
7045983 System for controlling motor speed by altering magnetic field of the motor Harold L. Castle, DeQuan Yu, Norman Krieger, Paul Fisher, Sheven Sharp +1 more 2006-05-16
6984099 Fuel pump impeller DeQuan Yu, Norman Krieger, Joseph Grabowski 2006-01-10
6953026 Pressure regulating valve for automotive fuel system DeQuan Yu, Marc Possley 2005-10-11
6890144 Low noise fuel pump design DeQuan Yu, Paul Fisher, Norman Krieger, David M. Dokas 2005-05-10
6840270 Low deviation pressure relief valve for fuel pumps DeQuan Yu, Christopher C. Lobombarbe, David J. Rink, David M. Dokas, Paul Fisher +1 more 2005-01-11
6783336 Fuel sender assembly DeQuan Yu, Norman Krieger, David Joseph Setsuda 2004-08-31
6675573 Vehicles containing and methods for using a pre-heater to reduce emissions, and for warming fuel cells at low ambient temperatures 2004-01-13
6644932 Hybrid electric/mechanical compressor with gear reducer Brian Robert Kelm, Robert Mohrmann, Richard Luken, Shawn Swales 2003-11-11
6467698 Vehicles containing water-producing fuel cells, and methods for using water produced by the fuel cells Erik Hans Gaarder, Gerald Spradlin, Robert Charles Borregard 2002-10-22
5477829 Automotive returnless fuel system pressure valve Christian V. Hassinger, Matthew L. Stein, Randall A. Betki 1995-12-26
5237975 Returnless fuel delivery system Randall A. Betki, Thomas E. Wiseman, Brian C. Prodin, Michael Robert Tinskey 1993-08-24