Assignee
PIERBURG AG
DE32 patents
Top patents by PatentIndex Score
US6036456AMar 14, 2000
Electrical air pump adapted for being periodically turned on and off and reversed in pumping direction
PIERBURG AG67 citations93
US5996551ADec 7, 1999
Spring assembly in an engine air throttle control providing rotational blocking when relaxed
PIERBURG AG30 citations93
US5975062ANov 2, 1999
Apparatus and method for periodically cleaning a charcoal canister and for periodically checking leak-tightness of a fuel system of an internal combustion engine
PIERBURG AG55 citations93
US5785013AJul 28, 1998
Electrically driven coolant pump for an internal combustion engine
PIERBURG AG101 citations92
US6443135B1Sep 3, 2002
Assembly of a valve unit, a combustion air intake and an exhaust gas recirculation unit for an internal combustion engine
PIERBURG AG50 citations91
US6293769B1Sep 25, 2001
Canned pump with dry rotor compartment
PIERBURG AG67 citations91
US6296458B1Oct 2, 2001
Electric fuel pump
PIERBURG AG21 citations90
US5711652AJan 27, 1998
Electrically driven air pump having a drive motor balanced in situ
PIERBURG AG30 citations90
US6039536AMar 21, 2000
Connection between a rotor hub and a shaft of an electric motor of an electrically driven air pump
PIERBURG AG19 citations89
US5701874ADec 30, 1997
Balanced valve control member for exhaust gas recycling
PIERBURG AG34 citations88
US5797727AAug 25, 1998
Impeller mounting for electrically driven air pump to reduce vibration
PIERBURG AG27 citations87
US6321781B1Nov 27, 2001
Apparatus for monitoring the valve stroke of an electromagnetically actuated valve
PIERBURG AG82 citations86
US5765435AJun 16, 1998
Apparatus for indicating fuel level in a fuel tank
PIERBURG AG24 citations86
US6494090B1Dec 17, 2002
Air-mass sensor
PIERBURG AG37 citations85
US6282944B1Sep 4, 2001
Apparatus and process for the analysis of exhaust gas components
PIERBURG AG23 citations85
US6390060B1May 21, 2002
Throttle valve for an internal combustion engine
PIERBURG AG11 citations74
US5765535AJun 16, 1998
Fuel supply system for internal combustion engines
PIERBURG AG15 citations72
US6265866B1Jul 24, 2001
Measuring device for determining the position of a control element with temperature related measurement errors correction
PIERBURG AG11 citations71
US6213446B1Apr 10, 2001
Exhaust gas recirculation valve having means to free a stuck valve member
PIERBURG AG12 citations71
US5826554AOct 27, 1998
Pressure relief means for a thin wall, air intake pipe for an internal combustion engine
PIERBURG AG8 citations70
US5706785AJan 13, 1998
Fuel supply system for internal combustion engines
PIERBURG AG10 citations69
US5969617AOct 19, 1999
Flame ionization detector
PIERBURG AG8 citations67
US5852227ADec 22, 1998
Apparatus for measuring the composition of exhaust gases of internal combustion engines
PIERBURG AG15 citations67
US5779463AJul 14, 1998
Rotary piston pump having a slide valve driven by a rotor
PIERBURG AG9 citations67
US6552466B2Apr 22, 2003
Wet-running direct-current motor having fluted brush contact faces
PIERBURG AG11 citations66
US6203286B1Mar 20, 2001
Electric fuel pump which is self-filling at low fuel levels in a fuel tank
PIERBURG AG7 citations63
US6272923B1Aug 14, 2001
Determining fill level of engine cooling system
PIERBURG AG4 citations61
US6176689B1Jan 23, 2001
Electrically driven air pump
PIERBURG AG10 citations59
US6386030B1May 14, 2002
Balanced bridge temperature regulator for an air-mass flow meter
PIERBURG AG6 citations57
US6202602B1Mar 20, 2001
Cooler for use in a vehicle combustion engine
PIERBURG AG6 citations57
US6367440B1Apr 9, 2002
Air-intake tube system for internal combustion engines
PIERBURG AG6 citations56
US6374610B2Apr 23, 2002
Secondary air fan for an internal combustion engine
PIERBURG AG2 citations52