Inventor
Chai-Nam Ng
Inventor
Rockford, IL, US
Overview
Patents· 16 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Mprimary
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 systems70%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters10%
F02NStarting of combustion engines5%
H02HEmergency protective circuit arrangements5%
H02KDynamo-electric machines5%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%
PatentTitleYear
7,663,849'Permanent magnet generator protection scheme'20106,462,429'Induction motor/generator system'20025,666,278'High voltage inverter utilizing low voltage power switches'19975,559,686'Stepped waveform inverter control'19965,495,403'Stepped-waveform power converter utilizing a summing transformer and a single inverter bridge'19965,301,098'Feedforward inverter phase control'19945,282,125'Power generation system with soft-start circuit'19945,225,973'Regulation circuit for a stepped-waveform inverter'19935,065,303'Transformer-coupled and phase-shifted inverter'19915,041,958'Stepped-waveform inverter with four subinverters'19915,040,105'Stepped-waveform inverter with eight subinverters'19915,031,086'Hybrid power system'19915,027,265'Regulator for stepped-waveform inverter'19915,012,177'Power conversion system using a switched reluctance motor/generator'19914,969,081'Inverter switch current sensor with shoot-through current limiting'19904,797,802'Multiple phase rectifier with active filter for removing noise in triggering signals and digital phase shift compensator for phase shifting signal passed through'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989–1997Patents assigned to SUNDSTRAND CORP (13)· patent assignee history
1989–2010Based in Rockford, IL, US· patent location history
1993Patents assigned to DHYANCHAND P JOHN (1)· patent assignee history
1993Patents assigned to NG CHAI NAM (1)· patent assignee history
1993Patents assigned to NGUYEN VIETSON (1)· patent assignee history
2002–2010Patents assigned to HAMILTON SUNDSTRAND CORP (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SUNDSTRAND CORP | 13 | 1989–1997 |
| HAMILTON SUNDSTRAND CORP | 2 | 2002–2010 |
| DHYANCHAND P JOHN | 1 | 1993 |
| NG CHAI NAMself | 1 | 1993 |
| NGUYEN VIETSON | 1 | 1993 |
Locations
| Location | Patents | Span |
|---|---|---|
| Rockford, Illinois, US | 16 | 1989–2010 |