Inventor · disambiguated record

Derek F. Lahr

Also filed as: LAHR DEREK · LAHR DEREK F · LAHR DEREK FREI

78 granted patents·27 pending applications·252 citations·filing 2006–2024

98Inventor score

Technology areasH02K F16H H01M F16D B60K

Files withGM GLOBAL TECH OPERATIONS LLC101 LAHR DEREK2 LAHR DEREK FREI1 UNIV MISSISSIPPI MEDICAL CT RE1

Top patents by PatentIndex Score

105 records

0198US10763772B1Excitation of cycloidal electric machineGM GLOBAL TECH OPERATIONS LLC·Filed 2019·Granted Sep 1, 2020·24 cites·16 claims
0297US11713803B1Carbon fiber composite drive unit housings for electric vehiclesGM GLOBAL TECH OPERATIONS LLC·Filed 2022·Granted Aug 1, 2023·5 cites·17 claims
0396US11916446B2Rotor assembly with solid low friction layer and press-fit sleeveGM GLOBAL TECH OPERATIONS LLC·Filed 2021·Granted Feb 27, 2024·2 cites·20 claims
0496US10017044B2Hybrid powertrain systemGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Jul 10, 2018·10 cites·18 claims
0595US12155266B2Bridgeless and webless rotor assembly using polymer compositesGM GLOBAL TECH OPERATIONS LLC·Filed 2021·Granted Nov 26, 2024·2 cites·21 claims
0695US12088146B2Rotor for an electric machine, electric machine for a vehicle, and vehicleGM GLOBAL TECH OPERATIONS LLC·Filed 2021·Granted Sep 10, 2024·2 cites·20 claims
0795US11876409B2Reinforced rotor for an electric machineGM GLOBAL TECH OPERATIONS LLC·Filed 2021·Granted Jan 16, 2024·2 cites·13 claims
0895US10337597B2Engine disconnects with mechanical diodes for vehicle powertrainsGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Jul 2, 2019·6 cites·20 claims
0995US10259448B2Hybrid vehicle propulsion systems and methodsGM GLOBAL TECH OPERATIONS LLC·Filed 2016·Granted Apr 16, 2019·20 cites·19 claims
1094US12062946B2Reinforced rotor for an electric machineGM GLOBAL TECH OPERATIONS LLC·Filed 2021·Granted Aug 13, 2024·2 cites·20 claims
1194US7878935B2Continuously variable transmission with external camLAHR DEREK FREI·Filed 2007·Granted Feb 1, 2011·53 cites·20 claims
1293US11009124B2Hydrodynamic torque converters with integrated engine disconnect devices of motor vehicle powertrainsGM GLOBAL TECH OPERATIONS LLC·Filed 2019·Granted May 18, 2021·6 cites·20 claims
1393US10864813B2Back-to-back selectable one-way clutches for engine disconnect devices of motor vehicle powertrainsGM GLOBAL TECH OPERATIONS LLC·Filed 2019·Granted Dec 15, 2020·8 cites·20 claims
1493US10760624B1Wedge-type selectable one-way clutches for engine disconnect devices of motor vehicle powertrainsGM GLOBAL TECH OPERATIONS LLC·Filed 2019·Granted Sep 1, 2020·5 cites·20 claims
1592US12494687B2Rotor assembly with a composite sleeve that is optimized for press-fit installationGM GLOBAL TECH OPERATIONS LLC·Filed 2022·Granted Dec 9, 2025·1 cites·20 claims
1692US11133724B2Rotor with compressive structural elementsGM GLOBAL TECH OPERATIONS LLC·Filed 2019·Granted Sep 28, 2021·4 cites·20 claims
1792US8425364B2Cam-based infinitely variable transmissionLAHR DEREK·Filed 2010·Granted Apr 23, 2013·24 cites·11 claims
1891US10189470B2Hybrid vehicle propulsion systems and methodsGM GLOBAL TECH OPERATIONS LLC·Filed 2016·Granted Jan 29, 2019·12 cites·14 claims
1990US10155547B1Vascular structures and methods for heat managementGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Dec 18, 2018·9 cites·17 claims
2089US11545860B2Inserts for motor rotor coreGM GLOBAL TECH OPERATIONS LLC·Filed 2021·Granted Jan 3, 2023·2 cites·19 claims
2189US10260613B2Damper assemblies for engine disconnect clutches of motor vehicle powertrainsGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Apr 16, 2019·3 cites·20 claims
2289US10166975B2Transmission with torque converter disconnect clutch and engine braking friction clutchGM GLOBAL TECH OPERATIONS LLC·Filed 2016·Granted Jan 1, 2019·4 cites·19 claims
2388US10804759B1Cycloidal electric machine with minimized airgapGM GLOBAL TECH OPERATIONS LLC·Filed 2019·Granted Oct 13, 2020·3 cites·20 claims
2488US10513251B2Multi-mode engine-disconnect clutch assemblies and control logic for hybrid electric vehiclesGM GLOBAL TECH OPERATIONS LLC·Filed 2019·Granted Dec 24, 2019·5 cites·20 claims
2588US10267391B2Continuously variable transmission with wedge actuation mechanismGM GLOBAL TECH OPERATIONS LLC·Filed 2016·Granted Apr 23, 2019·4 cites·20 claims
2687US10358123B2Multi-mode engine-disconnect clutch assemblies and control logic for hybrid electric vehiclesGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Jul 23, 2019·5 cites·20 claims
2786US11387712B2Method to reduce oil shear drag in airgapGM GLOBAL TECH OPERATIONS LLC·Filed 2019·Granted Jul 12, 2022·2 cites·20 claims
2886US11171545B2Reinforced stator housing for an electric motorGM GLOBAL TECH OPERATIONS LLC·Filed 2019·Granted Nov 9, 2021·2 cites·20 claims
2986US10941840B2Continuously variable transmission with wedge actuation mechanismGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Mar 9, 2021·3 cites·19 claims
3084US10876582B2Selectable one-way clutches with notch plate inserts for engine disconnect devices of motor vehicle powertrainsGM GLOBAL TECH OPERATIONS LLC·Filed 2019·Granted Dec 29, 2020·2 cites·20 claims
3184US10556482B2Vascular structures and methods for thermal controlGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Feb 11, 2020·3 cites·11 claims
3280US10464410B2Vehicle propulsion system torque transfer vibration attenuation mechanismsGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Nov 5, 2019·2 cites·20 claims
3378US10851882B2Damper configurations for a hybrid vehicle powertrain having a motor coupled between an engine and a transmission with a one-way clutch coupling the engine to the transmissionGM GLOBAL TECH OPERATIONS LLC·Filed 2018·Granted Dec 1, 2020·2 cites·19 claims
3477US12512532B2Battery pack having an integrated cooling systemGM GLOBAL TECH OPERATIONS LLC·Filed 2023·Granted Dec 30, 2025·0 cites·20 claims
3577US10804757B1Cycloidal reluctance motor with rotor electromagnetsGM GLOBAL TECH OPERATIONS LLC·Filed 2019·Granted Oct 13, 2020·1 cites·18 claims
3676US11476733B2Electric machine with forced convection-based rotor cooling of rotor magnetsGM GLOBAL TECH OPERATIONS LLC·Filed 2019·Granted Oct 18, 2022·1 cites·20 claims
3775US12424892B2Stabilized core assembly for carbon fiber sleeved electric motor rotorGM GLOBAL TECH OPERATIONS LLC·Filed 2023·Granted Sep 23, 2025·0 cites·19 claims
3874US10323696B2Dynamic latching mechanisms for selectable clutches of motor vehicle powertrainsGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Jun 18, 2019·2 cites·20 claims
3973US2025293384A1Cell integrated vent gas diverter with particle trapGM GLOBAL TECH OPERATIONS LLC·Filed 2024·Application pending·0 cites
4072US2025337036A1Battery pack corner cooling and heatingGM GLOBAL TECH OPERATIONS LLC·Filed 2024·Application pending·0 cites
4171US12046952B2Disconnected rotor web for increased reluctanceGM GLOBAL TECH OPERATIONS LLC·Filed 2022·Granted Jul 23, 2024·0 cites·17 claims
4271US11708869B2Selectable one-way clutches with notch plate inserts for engine disconnect devices of motor vehicle powertrainsGM GLOBAL TECH OPERATIONS LLC·Filed 2020·Granted Jul 25, 2023·0 cites·20 claims
4371US10913344B2Drivetrain for a hybrid propulsion systemGM GLOBAL TECH OPERATIONS LLC·Filed 2019·Granted Feb 9, 2021·2 cites·19 claims
4471US10473200B2Continuously variable transmission with wedge actuation mechanismGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Nov 12, 2019·1 cites·9 claims
4570US12199253B2Laminated thermal barrier for anisotropic heat transferGM GLOBAL TECH OPERATIONS LLC·Filed 2021·Granted Jan 14, 2025·0 cites·20 claims
4670US10473197B2Vehicle propulsion system torque transfer vibration attenuation mechanismGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Nov 12, 2019·1 cites·15 claims
4770US2025096357A1Multi-function beam with integrated structural, cooling, and transverse elastic compliance functions for use with electric vehicle battery packsGM GLOBAL TECH OPERATIONS LLC·Filed 2023·Application pending·0 cites
4870US2025201992A1Battery module/pack for prismatic battery cellsGM GLOBAL TECH OPERATIONS LLC·Filed 2023·Application pending·0 cites
4970US2025246726A1Battery cell enclosure including steel body with thermally conductive layer to improve thermal and sealing performanceGM GLOBAL TECH OPERATIONS LLC·Filed 2024·Application pending·0 cites
5069US12506386B2Physics based coolant flow algorithm for electric motorsGM GLOBAL TECH OPERATIONS LLC·Filed 2023·Granted Dec 23, 2025·0 cites·20 claims

Showing the top 50 of 105 patent records by PatentIndex Score.

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →