Inventor · disambiguated record
Anand K. Upadhyay
Also filed as: UPADHYAY ANAND · UPADHYAY ANAND K
14 granted patents·1 pending application·1,001 citations·filing 1984–2006
95Inventor score
Files withMOTOROLA INC5SUNDSTRAND CORP4KONINKL PHILIPS ELECTRONICS NV2MOTOROLA LIGHTING INC2LEE CHU QUON1
Top patents by PatentIndex Score
15 records- 0194US7906917B2Startup flicker suppression in a dimmable LED power supplyKONINKL PHILIPS ELECTRONICS NV·Filed 2005·Granted Mar 15, 2011·83 cites·22 claims
- 0294US4616142AMethod of operating parallel-connected semiconductor switch elementsSUNDSTRAND CORP·Filed 1984·Granted Oct 7, 1986·96 cites·5 claims
- 0393US4992919AParallel resonant converter with zero voltage switchingLEE CHU QUON·Filed 1989·Granted Feb 12, 1991·295 cites·16 claims
- 0489US5313176AIntegrated common mode and differential mode inductor deviceMOTOROLA LIGHTING INC·Filed 1992·Granted May 17, 1994·70 cites·6 claims
- 0586US5998930AElectronic ballast with two-step boost converter and methodMOTOROLA INC·Filed 1996·Granted Dec 7, 1999·75 cites·20 claims
- 0686US4717994ACurrent mode control for DC converters operating over 50% duty cycleZENITH ELECTRONICS CORP·Filed 1986·Granted Jan 5, 1988·60 cites·14 claims
- 0785US5969483AInverter control method for electronic ballastsMOTOROLA INC·Filed 1998·Granted Oct 19, 1999·72 cites·18 claims
- 0883US5834924AIn-rush current reduction circuit for boost converters and electronic ballastsMOTOROLA INC·Filed 1997·Granted Nov 10, 1998·67 cites·17 claims
- 0978US5945788AElectronic ballast with inverter control circuitMOTOROLA INC·Filed 1998·Granted Aug 31, 1999·65 cites·31 claims
- 1074US5729096AInverter protection method and protection circuit for fluorescent lamp preheat ballastsMOTOROLA INC·Filed 1996·Granted Mar 17, 1998·41 cites·14 claims
- 1167US5315280ABobbin for electrical windingsMOTOROLA LIGHTING INC·Filed 1991·Granted May 24, 1994·21 cites·23 claims
- 1262US4633381AInverter shoot-through protection circuitSUNDSTRAND CORP·Filed 1985·Granted Dec 30, 1986·21 cites·17 claims
- 1358US4694236AControl for AC motor driveSUNDSTRAND CORP·Filed 1985·Granted Sep 15, 1987·19 cites·9 claims
- 1450US4633382AInverter control systemSUNDSTRAND CORP·Filed 1985·Granted Dec 30, 1986·16 cites·3 claims
- 1545US2008252232A1Magnetic Ballast Fault Isolation System and MethodKONINKL PHILIPS ELECTRONICS NV·Filed 2006·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →