Inventor
GIERER GEORG
DE53 patents
⚠️ This page may combine multiple inventors who share the name “GIERER GEORG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ZAHNRADFABRIK FRIEDRICHSHAFEN
40 patentsUS6544139B1Apr 8, 2003
Electronic-hydraulic control for automobile drive systems with automatic gear shifting
ZAHNRADFABRIK FRIEDRICHSHAFEN28 citations93
US6155948ADec 5, 2000
Method of determining the parameters of an automatic transmission
ZAHNRADFABRIK FRIEDRICHSHAFEN43 citations93
US5305862AApr 26, 1994
Control device for a frictionally engaging clutch for a hydrodynamic torque converter
ZAHNRADFABRIK FRIEDRICHSHAFEN20 citations93
US4981052AJan 1, 1991
Transmission control fail safe system
ZAHNRADFABRIK FRIEDRICHSHAFEN49 citations93
US4944202AJul 31, 1990
Electrohydraulic control for an automatically shiftable automotive transmission
ZAHNRADFABRIK FRIEDRICHSHAFEN43 citations93
US4896568AJan 30, 1990
Electric-hydraulic control
ZAHNRADFABRIK FRIEDRICHSHAFEN23 citations93
US6418967B1Jul 16, 2002
Pressure regulating valve
ZAHNRADFABRIK FRIEDRICHSHAFEN35 citations92
US6527670B1Mar 4, 2003
Control device for an automatic automobile transmission
ZAHNRADFABRIK FRIEDRICHSHAFEN33 citations91
US6471027B1Oct 29, 2002
Parking brake, notably for automatic transmission systems of motor vehicles
ZAHNRADFABRIK FRIEDRICHSHAFEN41 citations89
US5947867ASep 7, 1999
Safety system for an automatic gearbox
ZAHNRADFABRIK FRIEDRICHSHAFEN23 citations89
US7794349B2Sep 14, 2010
Gear control device
ZAHNRADFABRIK FRIEDRICHSHAFEN11 citations84
US7736270B2Jun 15, 2010
Control valve arrangement for controlling a start clutch of an automatic gearbox
ZAHNRADFABRIK FRIEDRICHSHAFEN14 citations84
US7635057B2Dec 22, 2009
Device for the control at least of a hydraulically operable switching element of an automatic transmission
ZAHNRADFABRIK FRIEDRICHSHAFEN9 citations84
US6997300B2Feb 14, 2006
Device for the control of a hydraulically actuated clutch of an automatic transmission
ZAHNRADFABRIK FRIEDRICHSHAFEN13 citations84
US6948395B2Sep 27, 2005
Limp home device for a vehicle with automatic transmission
ZAHNRADFABRIK FRIEDRICHSHAFEN17 citations84
US5417626AMay 23, 1995
Electronic-hydraulic control device for transmission systems of vehicles with automatic gear change
ZAHNRADFABRIK FRIEDRICHSHAFEN20 citations84
US6669309B1Dec 30, 2003
vibration damper for damping fluid vibrations in a hydraulic system
ZAHNRADFABRIK FRIEDRICHSHAFEN13 citations82
US7243767B2Jul 17, 2007
Transmission hydraulic control unit
ZAHNRADFABRIK FRIEDRICHSHAFEN9 citations74
US6905433B2Jun 14, 2005
Device for control of a hydraulically actuatable shifting element
ZAHNRADFABRIK FRIEDRICHSHAFEN8 citations74
US5722913AMar 3, 1998
Process for controlling an automatic gearbox
ZAHNRADFABRIK FRIEDRICHSHAFEN10 citations74
US5103930AApr 14, 1992
Apparatus for electrohydraulic actuation of a clutch assembly for locking the differential transmission of a motor vehicle
ZAHNRADFABRIK FRIEDRICHSHAFEN11 citations74
US4458720AJul 10, 1984
Control valve for a torque converter having a bridge coupling
ZAHNRADFABRIK FRIEDRICHSHAFEN10 citations74
US6968935B2Nov 29, 2005
Shift element sub-assembly for a transmission
ZAHNRADFABRIK FRIEDRICHSHAFEN11 citations73
US6179108B1Jan 30, 2001
Device for releasing a security device for a vehicle with an automatic transmission in case of emergency
ZAHNRADFABRIK FRIEDRICHSHAFEN13 citations72
US8033106B2Oct 11, 2011
Electrohydraulic transmission controller, transmission device, and a motor vehicle drive train
ZAHNRADFABRIK FRIEDRICHSHAFEN5 citations63
US7780572B2Aug 24, 2010
Control valve arrangement for controlling a starting clutch of an automatic transmission
ZAHNRADFABRIK FRIEDRICHSHAFEN2 citations63
US7771317B2Aug 10, 2010
Control valve assembly for controlling a starting clutch of an automatic transmission
ZAHNRADFABRIK FRIEDRICHSHAFEN5 citations63
US7628261B2Dec 8, 2009
Apparatus for the operation of a hydrodynamic torque converter and a therewith corresponding converter bypassing clutch of a transmission apparatus
ZAHNRADFABRIK FRIEDRICHSHAFEN2 citations63
US7611002B2Nov 3, 2009
Apparatus for the operation of a hydrodynamic torque converter and a therewith corresponding converter bypassing clutch of a transmission apparatus
ZAHNRADFABRIK FRIEDRICHSHAFEN3 citations63
US6485393B2Nov 26, 2002
Method for controlling a vehicle drive system
ZAHNRADFABRIK FRIEDRICHSHAFEN3 citations63
US5005445AApr 9, 1991
Electric-hydraulic control for automatic transmission
ZAHNRADFABRIK FRIEDRICHSHAFEN5 citations63
US4227597AOct 14, 1980
Hydraulic control system for a hydrodynamic/mechanical transmission
ZAHNRADFABRIK FRIEDRICHSHAFEN4 citations63
US7416071B2Aug 26, 2008
Braking method for a vehicle
ZAHNRADFABRIK FRIEDRICHSHAFEN5 citations62
US5785629AJul 28, 1998
Process for controlling an automatic gearbox
ZAHNRADFABRIK FRIEDRICHSHAFEN5 citations61
US6705594B1Mar 16, 2004
Seal for intermediate sheet steel of a valve housing for an automatic transmission
ZAHNRADFABRIK FRIEDRICHSHAFEN2 citations56
US4817467AApr 4, 1989
Transmission with dual modulated shift controls
ZAHNRADFABRIK FRIEDRICHSHAFEN3 citations54
US8020685B2Sep 20, 2011
Device for the control at least of a hydraulically operable switching element of an automatic transmission
ZAHNRADFABRIK FRIEDRICHSHAFEN0 citations52
US7617918B2Nov 17, 2009
Device for the operation of a starter mechanism that can be brought into active connection with a hydraulic supply circuit of a transmission unit
ZAHNRADFABRIK FRIEDRICHSHAFEN1 citations52
US6261204B1Jul 17, 2001
Method for adaptation of pressure of an overlapping upshifting
ZAHNRADFABRIK FRIEDRICHSHAFEN1 citations52
US7664580B2Feb 16, 2010
Method for operating drive train side components of a motor vehicle
ZAHNRADFABRIK FRIEDRICHSHAFEN1 citations51
GIERER GEORG
5 patentsUS8392080B2Mar 5, 2013
Process for monitoring the direction of frictional drive from a vehicle transmission at near-zero vehicle speed
GIERER GEORG2 citations62
US8311715B2Nov 13, 2012
Motor vehicle transmission and method for monitoring frictional engagement in same in a preset neutral or parking position
GIERER GEORG2 citations62
US8249787B2Aug 21, 2012
Process for monitoring the direction of frictional drive from a vehicle transmission at near-zero vehicle speed
GIERER GEORG2 citations62
US8070636B2Dec 6, 2011
Electroyhydraulic control device of a gear unit
GIERER GEORG4 citations62
US8806863B2Aug 19, 2014
Hydraulic transmission control
GIERER GEORG1 citations51
ZF FREIDRICHSHAFEN AG
1 patentSCHMIDT THILO
1 patentHAUPT JOSEF
1 patentFRITZER ANTON
1 patentZF FRIEDRICHSCHAFEN AG
1 patentShowing the top 50 of 53 patents by PatentIndex Score.