Inventor
Sreeraman Venkitasubrahmanian
Inventor
Torrance, CA, US
Overview
Patents· 17 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H05Bprimary
H05BElectric heating44%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests29%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications9%
F21KNon-electric light sources using luminescence3%
G05FSystems for regulating electric or magnetic variables3%
H01JElectric discharge tubes or discharge lamps3%
H02HEmergency protective circuit arrangements3%
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 systems3%
H03KPulse technique3%
PatentTitleYear
10,542,591LED lamp(s) with single channel driver20209,906,153'Two-wire neutralless digital dimmer for leading-edge dimmable lamp driver and a method of operation thereof'20189,380,685'Bypass circuit for neutral-less controller in lighting control system'20166,628,091'Electronic switch for a bi-level fluorescent lamp fixture'20036,356,027'0-10V dimming interface protection circuit'20026,100,647'Lamp ballast for accurate control of lamp intensity'20005,872,429'Coded communication system and method for controlling an electric lamp'19995,850,127'EBL having a feedback circuit and a method for ensuring low temperature lamp operation at low dimming levels'19985,808,422'Lamp ballast with lamp rectification detection circuitry'19985,751,115'Lamp controller with lamp status detection and safety circuitry'19985,691,605'Electronic ballast with interface circuitry for multiple dimming inputs'19975,650,694'Lamp controller with lamp status detection and safety circuitry'19975,604,411'Electronic ballast having a triac dimming filter with preconditioner offset control'19975,559,395'Electronic ballast with interface circuitry for phase angle dimming control'19965,519,313'Temperature-compensated voltage regulator'19965,382,881'Ballast stabilization circuitry for eliminating moding or oscillation of the current envelope in gas discharge lamps and method of operating'19955,272,392'Current limited power semiconductor device'1993Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1993–1996Patents assigned to PHILIPS CORP (3)· patent assignee history
1993–1996Based in Ossining, NY, US· patent location history
1996–2002Patents assigned to PHILIPS ELECTRONICS NA (10)· patent assignee history
1996–1999Based in Torrance, CA, US· patent location history
2000–2020Based in Naperville, IL, US· patent location history
2003Patents assigned to KONINKL PHILIPS ELECTRONICS NV (1)· patent assignee history
2016Patents assigned to KONINKL PHILIPS NV (1)· patent assignee history
2018Patents assigned to PHILIPS LIGHTING HOLDING BV (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PHILIPS ELECTRONICS NA | 10 | 1996–2002 |
| PHILIPS CORP | 3 | 1993–1996 |
| KONINKL PHILIPS ELECTRONICS NV | 1 | 2003 |
| KONINKL PHILIPS NV | 1 | 2016 |
| PHILIPS LIGHTING HOLDING BV | 1 | 2018 |
Locations
| Location | Patents | Span |
|---|---|---|
| Torrance, California, US | 8 | 1996–1999 |
| Naperville, Illinois, US | 6 | 2000–2020 |
| Ossining, New York, US | 3 | 1993–1996 |