Inventor
Hwangsoo Choi
Inventor
Fullerton, CA, US
Overview
Patents· 12 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H05Bprimary
H05BElectric heating38%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems29%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications8%
G06FElectric digital data processing4%
H01FMagnets4%
PatentTitleYear
8,941,456'EMI suppression with shielded common mode choke'20158,598,808'Flyback with switching frequency responsive to load and input voltage'20138,482,218'Dimming input suitable for multiple dimming signal types'20138,363,436'Non-dissipative start up circuit'20137,414,371'Voltage regulation loop with variable gain control for inverter circuit'20087,313,006'Shoot-through prevention circuit for passive level-shifter'20076,946,806'Method and apparatus for controlling minimum brightness of a fluorescent lamp'20056,870,330'Shorted lamp detection in backlight system'20056,654,268'Method and apparatus for controlling minimum brightness of a fluorescent lamp'20036,469,922'Method and apparatus for controlling minimum brightness of a flourescent lamp'20026,307,765'Method and apparatus for controlling minimum brightness of a fluorescent lamp'20015,796,965'Intelligent power circuit for external data drive'1998Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1998Based in Cupertino, CA, US· patent location history
2001–2002Patents assigned to LINFINITY MICROELECTRONICS (2)· patent assignee history
2001–2015Based in Fullerton, CA, US· patent location history
2003–2015Patents assigned to MICROSEMI CORP (9)· patent assignee history
2013–2015Patents assigned to CHOI HWANGSOO (4)· patent assignee history
2013–2015Patents assigned to WANG SHIJU (4)· patent assignee history
2013–2015Patents assigned to LEWIS MIKE (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MICROSEMI CORP | 9 | 2003–2015 |
| CHOI HWANGSOOself | 4 | 2013–2015 |
| WANG SHIJU | 4 | 2013–2015 |
| LEWIS MIKE | 2 | 2013–2015 |
| LINFINITY MICROELECTRONICS | 2 | 2001–2002 |
Locations
| Location | Patents | Span |
|---|---|---|
| Fullerton, California, US | 11 | 2001–2015 |
| Cupertino, California, US | 1 | 1998 |