Inventor
Timothy Chen
Inventor
Aurora, OH, US
Overview
Patents· 28 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H05Bprimary
H05BElectric heating64%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications11%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%
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 systems7%
H01JElectric discharge tubes or discharge lamps5%
C02FTreatment of water, waste water, sewage, or sludge2%
H05KPrinted circuits2%
PatentTitleYear
8,487,551'Ultra-high efficiency ballast with end of lamp life protection'20138,487,541'Method to ensure ballast starting regardless of half cycle input'20137,948,191'Parallel transformer with output side electrical decoupling'20117,944,155'LED driver with single inverter circuit with isolated multi-channel outputs'20117,923,941'Low cost compact size single stage high power factor circuit for discharge lamps'20117,830,096'Circuit with improved efficiency and crest factor for current fed bipolar junction transistor (BJT) based electronic ballast'20107,759,880'Combined ballast for fluorescent lamp and light emitting diode and method of driving same'20107,733,028'Method and system for eliminating DC bias on electrolytic capacitors and shutdown detecting circuit for current fed ballast'20107,601,960'Control for UV water disinfection'20097,420,336'Method of controlling cathode voltage with low lamp\'s arc current'20087,382,099'Striation control for current fed electronic ballast'20087,327,101'Single point sensing for end of lamp life, anti-arcing, and no-load protection for electronic ballast'20087,315,130'Switching control for inverter startup and shutdown'20087,247,991'Dimming ballast and method'20077,193,368'Parallel lamps with instant program start electronic ballast'20077,075,251'Universal platform for phase dimming discharge lighting ballast and lamp'20066,989,637'Method and apparatus for a voltage controlled start-up circuit for an electronic ballast'20066,936,970'Method and apparatus for a unidirectional switching, current limited cutoff circuit for an electronic ballast'20056,841,951'Single stage HID electronic ballast'20056,831,423'High Q impedance matching inverter circuit with automatic line regulation'20046,677,718'HID electronic ballast with glow to arc and warm-up control'20046,653,800'Ballast circuit with lamp cathode protection and ballast protection'20036,459,214'High frequency/high power factor inverter circuit with combination cathode heating'20026,417,631'Integrated bridge inverter circuit for discharge lighting'20026,411,524'Dual planar printed wiring board for compact fluorescent lamp'20026,348,767'Electronic ballast with continued conduction of line current'20026,339,298'Dimming ballast resonant feedback circuit'20026,218,788'Floating IC driven dimming ballast'2001Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2001–2013Patents assigned to GEN ELECTRIC (27)· patent assignee history
2001–2002Based in Germantown, TN, US· patent location history
2003Based in Cleveland, OH, US· patent location history
2004–2013Based in Aurora, OH, US· patent location history
2013Patents assigned to CHEN TIMOTHY (2)· patent assignee history
2013Patents assigned to ROBERTS BRUCE (1)· patent assignee history
2013Patents assigned to SKULLY JAMES KEVIN (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| GEN ELECTRIC | 27 | 2001–2013 |
| CHEN TIMOTHYself | 2 | 2013 |
| ROBERTS BRUCE | 1 | 2013 |
| SKULLY JAMES KEVIN | 1 | 2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Aurora, OH, US | 21 | 2004–2013 |
| Germantown, TN, US | 6 | 2001–2002 |
| Cleveland, OH, US | 1 | 2003 |