Inventor
Caleb W. Secrest
Inventor
Oakland Township, MI, US
Overview
Patents· 7 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 converters29%
B60LPropulsion of electrically-propelled vehicles19%
Y02TClimate change mitigation technologies related to transportation19%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles5%
B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for5%
B60WConjoint control of vehicle sub-units of different type or different function5%
G01DMeasuring not specially adapted for a specific variable5%
G01SRadio direction-finding5%
G10KSound-producing devices5%
H02KDynamo-electric machines5%
PatentTitleYear
10,889,285Control of AC electric machine using average synchronous frame currents202110,668,822Elimination of fundamental harmonic position measurement errors in a vector-based position sensing system202010,396,696Methods, systems and apparatus for controlling current supplied to control a machine201910,355,631Methods, systems and apparatus for controlling current supplied to control a machine201910,326,390Systems and methods for operating motors with a single motor position signal201910,319,360Active masking of tonal noise using motor-based acoustic generator to improve sound quality201910,156,462Error correction in a vector-based position sensing system2018Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2018–2021Patents assigned to GM GLOBAL TECH OPERATIONS LLC (7)· patent assignee history
2018–2020Based in Shelby Township, MI, US· patent location history
2019–2021Based in Oakland Township, MI, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| GM GLOBAL TECH OPERATIONS LLC | 7 | 2018–2021 |
Locations
| Location | Patents | Span |
|---|---|---|
| Oakland Township, MI, US | 4 | 2019–2021 |
| Shelby Township, MI, US | 3 | 2018–2020 |