Inventor
Ronald John Krefta
Inventor
Noblesville, IN, US
Overview
Patents· 16 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Pprimary
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters23%
H02KDynamo-electric machines20%
B60LPropulsion of electrically-propelled vehicles9%
G01DMeasuring not specially adapted for a specific variable9%
Y02TClimate change mitigation technologies related to transportation9%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles6%
B60WConjoint control of vehicle sub-units of different type or different function6%
B60YIndexing scheme relating to aspects cross-cutting vehicle technology6%
F02DControlling combustion engines6%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%
PatentTitleYear
9,463,713'System and method for error correction in angular position sensors'20169,260,036'System and method for error correction in angular position sensors'20168,656,890'System and method for controlling an injection time of a fuel injector based on closing electrical decay'20147,945,374'Method and apparatus for characterizing fuel injector performance to reduce variability in fuel injection'20116,864,667'Stator winding pattern for reduced magnetic noise'20056,741,060'Method and system for controlling a permanent magnet machine during fault conditions'20046,639,371'Method and system for controlling start of a permanent magnet machine'20036,577,097'Method and system for controlling a synchronous machine using a changeable cycle-conduction angle'20036,538,358'Hybrid electrical machine with axially extending magnets'20036,455,978'Hybrid twin coil electrical machine'20026,437,477'Hybrid electrical machine with axial flux magnet'20026,342,772'Drive circuit and method for driving a switched reluctance machine'20026,232,739'High-resolution incremental position sensor with pulse switching strategy'20015,821,722'Multiphase electrical motor, control and method using overlapping conduction periods in the windings'19984,950,960'Electronically commutated motor having an increased flat top width in its back EMF waveform, a rotatable assembly therefor, and methods of their operation'19904,933,584'Electronically commutated motor having skewed magnetics'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990–1998Patents assigned to GEN ELECTRIC (3)· patent assignee history
1990Based in Fort Wayne, IN, US· patent location history
1998–2016Based in Noblesville, IN, US· patent location history
2001–2014Patents assigned to DELPHI TECH INC (11)· patent assignee history
2014Patents assigned to FARAH PHILIPPE S (1)· patent assignee history
2014Patents assigned to KEEGAN KEVIN R (1)· patent assignee history
2016Patents assigned to ALLISON TRANSM INC (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DELPHI TECH INC | 11 | 2001–2014 |
| GEN ELECTRIC | 3 | 1990–1998 |
| ALLISON TRANSM INC | 2 | 2016 |
| FARAH PHILIPPE S | 1 | 2014 |
| KEEGAN KEVIN R | 1 | 2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Noblesville, IN, US | 14 | 1998–2016 |
| Fort Wayne, IN, US | 2 | 1990 |