Inventor · disambiguated record
Dumitru Puiu
Also filed as: PUIU DUMITRU
48 granted patents·6 pending applications·478 citations·filing 2003–2024
98Inventor score
Files withMAGNA POWERTRAIN USA INC17GM GLOBAL TECH OPERATIONS LLC13PUIU DUMITRU11MAGNA DRIVETRAIN AMERICA INC4TAMAI GORO4
Top patents by PatentIndex Score
54 records- 0198US11192436B1Park system for dual motor drive unitGM GLOBAL TECH OPERATIONS LLC·Filed 2021·Granted Dec 7, 2021·15 cites·18 claims
- 0297US7294086B2Hydraulic control system for multiple clutches in a motor vehicleMAGNA POWERTRAIN USA INC·Filed 2005·Granted Nov 13, 2007·33 cites·19 claims
- 0396US7059991B2Torque vectoring limited slip differential assemblyMAGNA POWERTRAIN USA INC·Filed 2005·Granted Jun 13, 2006·35 cites·25 claims
- 0495US11280263B2Torque-actuated variable compression ratio phaserGM GLOBAL TECH OPERATIONS LLC·Filed 2020·Granted Mar 22, 2022·5 cites·13 claims
- 0595US7175558B2Torque vectoring drive units with worm driven ball screw clutchesMAGNA POWERTRAIN USA INC·Filed 2005·Granted Feb 13, 2007·21 cites·12 claims
- 0695US7004876B2Torque vectoring limited slip differential assemblyMAGNA POWERTRAIN USA INC·Filed 2004·Granted Feb 28, 2006·44 cites·21 claims
- 0794US8512187B2Multi-mode drive unitPUIU DUMITRU·Filed 2010·Granted Aug 20, 2013·17 cites·2 claims
- 0892US7337886B2Torque transfer mechanisms with power-operated clutch actuatorMAGNA POWERTRAIN USA INC·Filed 2007·Granted Mar 4, 2008·15 cites·30 claims
- 0991US9387752B2Multi-mode hybrid variable drive unitPUIU DUMITRU·Filed 2015·Granted Jul 12, 2016·6 cites·17 claims
- 1091US7278943B2Power transmission device with electrohydraulic clutch actuatorMAGNA POWERTRAIN USA INC·Filed 2005·Granted Oct 9, 2007·12 cites·25 claims
- 1190US6991079B2Power transfer device with hydraulically-actuated clutch assemblyMAGNA POWERTRAIN USA INC·Filed 2005·Granted Jan 31, 2006·11 cites·29 claims
- 1289US7201264B2Torque transfer mechanisms for power-operated clutch actuatorMAGNA POWERTRAIN USA INC·Filed 2005·Granted Apr 10, 2007·9 cites·35 claims
- 1386US8795115B2Hybrid dual configuration transmissionPUIU DUMITRU·Filed 2012·Granted Aug 5, 2014·10 cites·16 claims
- 1485US12292102B1Locking differentials in rotor shaftsGM GLOBAL TECH OPERATIONS LLC·Filed 2024·Granted May 6, 2025·1 cites·14 claims
- 1585US8444516B2Multi-speed drive unitTAMAI GORO·Filed 2010·Granted May 21, 2013·12 cites·6 claims
- 1684US10690198B2Electric motor torque limiting clutchGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Jun 23, 2020·2 cites·6 claims
- 1784US7104379B2Power-operated clutch actuatorMAGNA POWERTRAIN USA INC·Filed 2004·Granted Sep 12, 2006·14 cites·16 claims
- 1884US7004873B2Transfer case with electrohydraulic clutch actuatorMAGNA POWERTRAIN USA INC·Filed 2004·Granted Feb 28, 2006·16 cites·39 claims
- 1984US6945374B2Active torque coupling with hydraulically-actuated ball ramp clutch assemblyMAGNA DRIVETRAIN AMERICA INC·Filed 2004·Granted Sep 20, 2005·30 cites·44 claims
- 2081US10495223B2Shift by wire parking systemGM GLOBAL TECH OPERATIONS LLC·Filed 2018·Granted Dec 3, 2019·2 cites·20 claims
- 2179US6848550B2Torque transfer system with two stage ball ramp/clutch actuationMAGNA DRIVETRAIN AMERICA INC·Filed 2003·Granted Feb 1, 2005·30 cites·22 claims
- 2278US8961343B2Clutch system for a transmissionTAMAI GORO·Filed 2011·Granted Feb 24, 2015·4 cites·15 claims
- 2378US7361113B2Torque distributing drive unit for motor vehiclesMAGNA POWERTRAIN USA INC·Filed 2005·Granted Apr 22, 2008·11 cites·20 claims
- 2477US7338403B2Torque coupling with power-operated clutch actuatorMAGNA POWERTRAIN USA INC·Filed 2004·Granted Mar 4, 2008·27 cites·14 claims
- 2577US6991080B2Power transmission devices with active torque couplingsMAGNA POWERTRAIN USA INC·Filed 2005·Granted Jan 31, 2006·9 cites·42 claims
- 2677US6971494B2Torque transfer coupling with friction clutch and hydraulic clutch actuatorMAGNA DRIVETRAIN AMERICA INC·Filed 2004·Granted Dec 6, 2005·13 cites·64 claims
- 2776US11149825B1Engine assembly including gearbox for varying compression ratio of engine assembly using stationary actuatorGM GLOBAL TECH OPERATIONS LLC·Filed 2020·Granted Oct 19, 2021·1 cites·20 claims
- 2876US8795118B2Electric motor assist for transmission electric oil pumpHIDEG LASZLO·Filed 2012·Granted Aug 5, 2014·6 cites·16 claims
- 2975US7278947B2Power transfer unit for four-wheel drive vehicleMAGNA POWERTRAIN USA INC·Filed 2006·Granted Oct 9, 2007·5 cites·24 claims
- 3074US12483100B2Shaft embedded brush power transfer for separately excited machine powerGM GLOBAL TECH OPERATIONS LLC·Filed 2023·Granted Nov 25, 2025·0 cites·20 claims
- 3174US7281617B2Active torque coupling with hydraulically-actuated rotary clutch actuatorMAGNA POWERTRAIN USA INC·Filed 2005·Granted Oct 16, 2007·8 cites·36 claims
- 3274US6948604B2Hydraulically-actuated pilot clutch type clutch assemblyMAGNA DRIVETRAIN AMERICA INC·Filed 2004·Granted Sep 27, 2005·21 cites·32 claims
- 3373US7201265B2Torque transfer mechanism with power-operated clutch actuatorMAGNA POWERTRAIN USA INC·Filed 2006·Granted Apr 10, 2007·3 cites·20 claims
- 3472US8657712B2Multi-speed drive unitTAMAI GORO·Filed 2010·Granted Feb 25, 2014·3 cites·8 claims
- 3570US8939858B2Electrically variable drive unitPUIU DUMITRU·Filed 2012·Granted Jan 27, 2015·4 cites·17 claims
- 3670US8382623B2Hybrid transmission having synchronizersCHRYSLER GROUP LLC·Filed 2012·Granted Feb 26, 2013·3 cites·15 claims
- 3768US8118703B2Hybrid transmission having synchronizersPUIU DUMITRU·Filed 2006·Granted Feb 21, 2012·6 cites·25 claims
- 3866US7503866B2Axle assembly with torque vectoring drive mechanismMAGNA POWERTRAIN USA INC·Filed 2008·Granted Mar 17, 2009·5 cites·22 claims
- 3965US9109674B2Enhanced electrically variable drive unitDUHAIME MICHAEL L·Filed 2013·Granted Aug 18, 2015·3 cites·15 claims
- 4061US8651989B2Multi-mode drive unitPUIU DUMITRU·Filed 2013·Granted Feb 18, 2014·1 cites·3 claims
- 4160US9353692B2Start-up strategy for hybrid powertrainHIDEG LASZLO·Filed 2012·Granted May 31, 2016·2 cites·20 claims
- 4259US8937413B2Electric motor with coolant shield assemblyPUIU DUMITRU·Filed 2012·Granted Jan 20, 2015·1 cites·18 claims
- 4358US11131240B1Engine assembly including a force splitter for varying compression ratio using an actuatorGM GLOBAL TECH OPERATIONS LLC·Filed 2020·Granted Sep 28, 2021·0 cites·20 claims
- 4455US11745714B2System for electronic parking brake actuationGM GLOBAL TECH OPERATIONS LLC·Filed 2021·Granted Sep 5, 2023·0 cites·20 claims
- 4555US10914378B2Roller-gear shift by wire parking systemGM GLOBAL TECH OPERATIONS LLC·Filed 2019·Granted Feb 9, 2021·0 cites·17 claims
- 4655US9482288B2Clutch system for a transmissionTAMAI GORO·Filed 2015·Granted Nov 1, 2016·0 cites·5 claims
- 4753US2025119021A1Axial brush assembly for electric machineGM GLOBAL TECH OPERATIONS LLC·Filed 2023·Application pending·0 cites
- 4852US8113981B2Multi-speed epicyclic powershift transmissionKIRKWOOD MALCOLM E·Filed 2008·Granted Feb 14, 2012·2 cites·24 claims
- 4949US10962064B2Bidirectional overrunning clutch for a motor vehicleGM GLOBAL TECH OPERATIONS LLC·Filed 2019·Granted Mar 30, 2021·0 cites·20 claims
- 5045US2006276292A1Drive axle assembly with torque distributing limited slip differential unitPUIU DUMITRU·Filed 2006·Application pending·0 cites
Showing the top 50 of 54 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Dumitru Puiu files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →