Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
DP

Dumitru Puiu — 47 Patents

MPMagna Powertrain: 18 patents #12 of 107Top 15%
CGChrysler Group: 11 patents #50 of 2,641Top 2%
General Motors: 10 patents #1,545 of 18,328Top 9%
FLFca Us Llc.: 4 patents #122 of 1,371Top 9%
MAMagna Drivetrain Of America: 4 patents #1 of 28Top 4%
Sterling Heights, MI: #13 of 1,485 inventorsTop 1%
Michigan: #1,015 of 86,293 inventorsTop 2%
Overall (All Time): #59,756 of 4,157,543Top 2%
47 Patents All Time

Issued Patents All Time

Showing 26–47 of 47 patents

Patent #TitleCo-InventorsDate
8113981 Multi-speed epicyclic powershift transmission Malcolm E. Kirkwood 2012-02-14
7503866 Axle assembly with torque vectoring drive mechanism Malcolm E. Kirkwood 2009-03-17
7361113 Torque distributing drive unit for motor vehicles Malcolm E. Kirkwood 2008-04-22
7337886 Torque transfer mechanisms with power-operated clutch actuator 2008-03-04
7338403 Torque coupling with power-operated clutch actuator 2008-03-04
7294086 Hydraulic control system for multiple clutches in a motor vehicle James S. Brissenden, Timothy M. Burns, Sankar K. Mohan, Eric A. Bansbach, Malcolm E. Kirkwood 2007-11-13
7281617 Active torque coupling with hydraulically-actuated rotary clutch actuator 2007-10-16
7278943 Power transmission device with electrohydraulic clutch actuator 2007-10-09
7278947 Power transfer unit for four-wheel drive vehicle 2007-10-09
7201264 Torque transfer mechanisms for power-operated clutch actuator 2007-04-10
7201265 Torque transfer mechanism with power-operated clutch actuator 2007-04-10
7175558 Torque vectoring drive units with worm driven ball screw clutches Thomas C. Bowen 2007-02-13
7104379 Power-operated clutch actuator 2006-09-12
7059991 Torque vectoring limited slip differential assembly 2006-06-13
7004873 Transfer case with electrohydraulic clutch actuator 2006-02-28
7004876 Torque vectoring limited slip differential assembly 2006-02-28
6991079 Power transfer device with hydraulically-actuated clutch assembly 2006-01-31
6991080 Power transmission devices with active torque couplings 2006-01-31
6971494 Torque transfer coupling with friction clutch and hydraulic clutch actuator 2005-12-06
6948604 Hydraulically-actuated pilot clutch type clutch assembly 2005-09-27
6945374 Active torque coupling with hydraulically-actuated ball ramp clutch assembly 2005-09-20
6848550 Torque transfer system with two stage ball ramp/clutch actuation Carl D. Schleuder, Malcolm E. Kirkwood 2005-02-01