P

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 patents
US6544139B1Apr 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 patents

ZF FREIDRICHSHAFEN AG

1 patent

SCHMIDT THILO

1 patent

HAUPT JOSEF

1 patent

FRITZER ANTON

1 patent

ZF FRIEDRICHSCHAFEN AG

1 patent

Showing the top 50 of 53 patents by PatentIndex Score.