Inventor
Stephen L. Wong
Inventor
Scarsdale, NY, US
Overview
Patents· 37 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H03Kprimary
H03KPulse technique21%
H03FAmplifiers13%
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 systems9%
H05BElectric heating7%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%
G05FSystems for regulating electric or magnetic variables6%
G01RMeasuring electric variables4%
G06FElectric digital data processing4%
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes3%
G07CTime or attendance registers3%
PatentTitleYear
9,313,843'Systems and methods for driving light emitting diodes'20169,101,025'Systems and methods for driving light emitting diodes'20158,154,263'Constant GM circuits and methods for regulating voltage'20126,353,345'Low cost half bridge driver integrated circuit with capability of using high threshold voltage DMOS'20026,260,021'Computer-based medical image distribution system and method'20016,182,076'Web-based, biometric authetication system and method'20016,076,166'Personalizing hospital intranet web sites'20006,037,720'Level shifter'20005,930,804'Web-based biometric authentication system and method'19995,844,443'Linear high-frequency amplifier with high input impedance and high power efficiency'19985,828,269'High-frequency amplifier with high input impedance and high power efficiency'19985,818,708'High-voltage AC to low-voltage DC converter'19985,760,651'Inductorless voltage biasing circuit for and Ac-coupled amplifier'19985,754,065'Driving scheme for a bridge transistor'19985,719,521'Integrated half-bridge timing control circuit'19985,687,067'Low noise controller for pulse width modulated converters'19975,627,717'Electronic processing unit, and circuit breaker including such a unit'19975,621,342'Low-power CMOS driver circuit capable of operating at high frequencies'19975,543,740'Integrated half-bridge driver circuit'19965,519,313'Temperature-compensated voltage regulator'19965,512,849'Low power intelligent current source for monitoring a high voltage'19965,510,972'Bridge rectifier circuit having active switches and an active control circuit'19965,485,292'High voltage differential sensor having a capacitive attenuator'19965,469,046'Transformerless low voltage switching power supply'19955,457,427'High-frequency amplifier means with enhanced output resistance'19955,432,479'D.C. current compensation circuit for a nonlinear amplifier'19955,424,663'Integrated high voltage differential sensor using the inverse gain of high voltage transistors'19955,424,686'Negative-resistance-compensated microwave buffer'19955,418,673'Control electrode disable circuit for power transistor'19955,365,198'Wideband amplifier circuit using npn transistors'19945,272,392'Current limited power semiconductor device'19935,151,767'Power integrated circuit having reverse-voltage protection'19925,081,371'Integrated charge pump circuit with back bias voltage reduction'19924,987,348'Bilevel current limiter'19914,918,338'Drain-biassed transresistance device for continuous time filters'19904,893,212'Protection of power integrated circuits against load voltage surges'19904,525,679'High gain amplifying stage by output conductance cancellation'1985Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1985Based in Oakville, CA· patent location history
1990–1996Patents assigned to PHILIPS CORP (13)· patent assignee history
1990–1998Based in Scarsdale, NY, US· patent location history
1994–2002Patents assigned to PHILIPS ELECTRONICS NA (20)· patent assignee history
1999–2001Based in San Francisco, CA, US· patent location history
2000Based in Cupertino, CA, US· patent location history
2002–2016Based in Saratoga, CA, US· patent location history
2012–2015Patents assigned to WONG STEPHEN LEEBOON (2)· patent assignee history
2015–2016Patents assigned to MARVELL WORLD TRADE LTD (2)· patent assignee history
2015Patents assigned to LE TRI (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PHILIPS ELECTRONICS NA | 20 | 1994–2002 |
| PHILIPS CORP | 13 | 1990–1996 |
| MARVELL WORLD TRADE LTD | 2 | 2015–2016 |
| WONG STEPHEN LEEBOONself | 2 | 2012–2015 |
| LE TRI | 1 | 2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Scarsdale, New York, US | 27 | 1990–1998 |
| Saratoga, California, US | 4 | 2002–2016 |
| San Francisco, California, US | 4 | 1999–2001 |
| Cupertino, California, US | 1 | 2000 |
| Oakville, CA | 1 | 1985 |