Inventor
PUIU DUMITRU
US49 patents
⚠️ This page may combine multiple inventors who share the name “PUIU DUMITRU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MAGNA POWERTRAIN USA INC
17 patentsUS7004876B2Feb 28, 2006
Torque vectoring limited slip differential assembly
MAGNA POWERTRAIN USA INC44 citations96
US7175558B2Feb 13, 2007
Torque vectoring drive units with worm driven ball screw clutches
MAGNA POWERTRAIN USA INC21 citations93
US7338403B2Mar 4, 2008
Torque coupling with power-operated clutch actuator
MAGNA POWERTRAIN USA INC27 citations92
US7294086B2Nov 13, 2007
Hydraulic control system for multiple clutches in a motor vehicle
MAGNA POWERTRAIN USA INC33 citations92
US7104379B2Sep 12, 2006
Power-operated clutch actuator
MAGNA POWERTRAIN USA INC14 citations92
US7059991B2Jun 13, 2006
Torque vectoring limited slip differential assembly
MAGNA POWERTRAIN USA INC35 citations92
US7004873B2Feb 28, 2006
Transfer case with electrohydraulic clutch actuator
MAGNA POWERTRAIN USA INC16 citations92
US7361113B2Apr 22, 2008
Torque distributing drive unit for motor vehicles
MAGNA POWERTRAIN USA INC11 citations84
US7337886B2Mar 4, 2008
Torque transfer mechanisms with power-operated clutch actuator
MAGNA POWERTRAIN USA INC15 citations84
US7278943B2Oct 9, 2007
Power transmission device with electrohydraulic clutch actuator
MAGNA POWERTRAIN USA INC12 citations84
US6991079B2Jan 31, 2006
Power transfer device with hydraulically-actuated clutch assembly
MAGNA POWERTRAIN USA INC11 citations84
US7281617B2Oct 16, 2007
Active torque coupling with hydraulically-actuated rotary clutch actuator
MAGNA POWERTRAIN USA INC8 citations74
US7278947B2Oct 9, 2007
Power transfer unit for four-wheel drive vehicle
MAGNA POWERTRAIN USA INC5 citations74
US7201264B2Apr 10, 2007
Torque transfer mechanisms for power-operated clutch actuator
MAGNA POWERTRAIN USA INC9 citations74
US6991080B2Jan 31, 2006
Power transmission devices with active torque couplings
MAGNA POWERTRAIN USA INC9 citations74
US7503866B2Mar 17, 2009
Axle assembly with torque vectoring drive mechanism
MAGNA POWERTRAIN USA INC5 citations63
US7201265B2Apr 10, 2007
Torque transfer mechanism with power-operated clutch actuator
MAGNA POWERTRAIN USA INC3 citations63
GM GLOBAL TECH OPERATIONS LLC
12 patentsUS11192436B1Dec 7, 2021
Park system for dual motor drive unit
GM GLOBAL TECH OPERATIONS LLC15 citations85
US10495223B2Dec 3, 2019
Shift by wire parking system
GM GLOBAL TECH OPERATIONS LLC2 citations72
US11280263B2Mar 22, 2022
Torque-actuated variable compression ratio phaser
GM GLOBAL TECH OPERATIONS LLC5 citations69
US10690198B2Jun 23, 2020
Electric motor torque limiting clutch
GM GLOBAL TECH OPERATIONS LLC2 citations64
US12483100B2Nov 25, 2025
Shaft embedded brush power transfer for separately excited machine power
GM GLOBAL TECH OPERATIONS LLC0 citations59
US12292102B1May 6, 2025
Locking differentials in rotor shafts
GM GLOBAL TECH OPERATIONS LLC1 citations57
US11149825B1Oct 19, 2021
Engine assembly including gearbox for varying compression ratio of engine assembly using stationary actuator
GM GLOBAL TECH OPERATIONS LLC1 citations56
US11131240B1Sep 28, 2021
Engine assembly including a force splitter for varying compression ratio using an actuator
GM GLOBAL TECH OPERATIONS LLC0 citations53
US12535126B1Jan 27, 2026
Drive unit including a concentric planetary gear system having dual helical gears
GM GLOBAL TECH OPERATIONS LLC0 citations52
US10914378B2Feb 9, 2021
Roller-gear shift by wire parking system
GM GLOBAL TECH OPERATIONS LLC0 citations52
US10962064B2Mar 30, 2021
Bidirectional overrunning clutch for a motor vehicle
GM GLOBAL TECH OPERATIONS LLC0 citations47
US11745714B2Sep 5, 2023
System for electronic parking brake actuation
GM GLOBAL TECH OPERATIONS LLC0 citations42
PUIU DUMITRU
7 patentsUS8512187B2Aug 20, 2013
Multi-mode drive unit
PUIU DUMITRU17 citations92
US8795115B2Aug 5, 2014
Hybrid dual configuration transmission
PUIU DUMITRU10 citations84
US8118703B2Feb 21, 2012
Hybrid transmission having synchronizers
PUIU DUMITRU6 citations84
US9387752B2Jul 12, 2016
Multi-mode hybrid variable drive unit
PUIU DUMITRU6 citations73
US8939858B2Jan 27, 2015
Electrically variable drive unit
PUIU DUMITRU4 citations72
US8651989B2Feb 18, 2014
Multi-mode drive unit
PUIU DUMITRU1 citations52
US8937413B2Jan 20, 2015
Electric motor with coolant shield assembly
PUIU DUMITRU1 citations45
MAGNA DRIVETRAIN AMERICA INC
4 patentsUS6948604B2Sep 27, 2005
Hydraulically-actuated pilot clutch type clutch assembly
MAGNA DRIVETRAIN AMERICA INC21 citations92
US6945374B2Sep 20, 2005
Active torque coupling with hydraulically-actuated ball ramp clutch assembly
MAGNA DRIVETRAIN AMERICA INC30 citations92
US6848550B2Feb 1, 2005
Torque transfer system with two stage ball ramp/clutch actuation
MAGNA DRIVETRAIN AMERICA INC30 citations92
US6971494B2Dec 6, 2005
Torque transfer coupling with friction clutch and hydraulic clutch actuator
MAGNA DRIVETRAIN AMERICA INC13 citations84