Inventor

KREFTA RONALD J

US9 patents

⚠️ This page may combine multiple inventors who share the name “KREFTA RONALD J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

GEN ELECTRIC

3 patents

US4933584AJun 12, 1990

Electronically commutated motor having skewed magnetics

GEN ELECTRIC121 citations94

US4950960AAug 21, 1990

Electronically commutated motor having an increased flat top width in its back EMF waveform, a rotatable assembly therefor, and methods of their operation

GEN ELECTRIC24 citations91

US5821722AOct 13, 1998

Multiphase electrical motor, control and method using overlapping conduction periods in the windings

GEN ELECTRIC56 citations90

ALLISON TRANSM INC

2 patents

US9260036B2Feb 16, 2016

System and method for error correction in angular position sensors

ALLISON TRANSM INC8 citations83

US9463713B2Oct 11, 2016

System and method for error correction in angular position sensors

ALLISON TRANSM INC0 citations51

DELPHI TECH INC

1 patent

US7945374B2May 17, 2011

Method and apparatus for characterizing fuel injector performance to reduce variability in fuel injection

DELPHI TECH INC14 citations83

DELPHI TECH IP LTD

1 patent

US11423203B2Aug 23, 2022

System and method for modeling thermal circuits

DELPHI TECH IP LTD1 citations59

BORGWARNER INC

1 patent

US12459376B2Nov 4, 2025

Optimization of switching frequency and pulse width modulation technique for traction power inverters

BORGWARNER INC0 citations57

FARAH PHILIPPE S

1 patent

US8656890B2Feb 25, 2014

System and method for controlling an injection time of a fuel injector based on closing electrical decay

FARAH PHILIPPE S2 citations53