Inventor
LAHR DEREK FREI
US13 patents
⚠️ This page may combine multiple inventors who share the name “LAHR DEREK FREI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GM GLOBAL TECH OPERATIONS LLC
12 patentsUS11713803B1Aug 1, 2023
Carbon fiber composite drive unit housings for electric vehicles
GM GLOBAL TECH OPERATIONS LLC5 citations73
US12155266B2Nov 26, 2024
Bridgeless and webless rotor assembly using polymer composites
GM GLOBAL TECH OPERATIONS LLC2 citations72
US11916446B2Feb 27, 2024
Rotor assembly with solid low friction layer and press-fit sleeve
GM GLOBAL TECH OPERATIONS LLC2 citations72
US12062946B2Aug 13, 2024
Reinforced rotor for an electric machine
GM GLOBAL TECH OPERATIONS LLC2 citations71
US11876409B2Jan 16, 2024
Reinforced rotor for an electric machine
GM GLOBAL TECH OPERATIONS LLC2 citations71
US12494687B2Dec 9, 2025
Rotor assembly with a composite sleeve that is optimized for press-fit installation
GM GLOBAL TECH OPERATIONS LLC1 citations63
US12506386B2Dec 23, 2025
Physics based coolant flow algorithm for electric motors
GM GLOBAL TECH OPERATIONS LLC0 citations62
US12424892B2Sep 23, 2025
Stabilized core assembly for carbon fiber sleeved electric motor rotor
GM GLOBAL TECH OPERATIONS LLC0 citations61
US12046952B2Jul 23, 2024
Disconnected rotor web for increased reluctance
GM GLOBAL TECH OPERATIONS LLC0 citations61
US11728535B2Aug 15, 2023
Battery module housing cooling assembly
GM GLOBAL TECH OPERATIONS LLC0 citations60
US11777348B2Oct 3, 2023
Rotor core with load bearing polymer and insert
GM GLOBAL TECH OPERATIONS LLC0 citations50
US12482902B2Nov 25, 2025
Balanced current collector plate
GM GLOBAL TECH OPERATIONS LLC0 citations43