Inventor · disambiguated record
Qinghong Yu
Also filed as: YU QINGHONG
23 granted patents·1 pending application·120 citations·filing 2004–2025
94Inventor score
Top patents by PatentIndex Score
24 records- 0190US7312588B1Ballast with frequency-diagnostic lamp fault protection circuitOSRAM SYLVANIA INC·Filed 2006·Granted Dec 25, 2007·25 cites·32 claims
- 0288US7288901B1Ballast with arc protection circuitOSRAM SYLVANIA INC·Filed 2006·Granted Oct 30, 2007·17 cites·19 claims
- 0381US7528558B2Ballast with ignition voltage controlOSRAM SYLVANIA INC·Filed 2007·Granted May 5, 2009·9 cites·30 claims
- 0479US7239094B2Electronic ballast with adaptive lamp preheat and ignitionUNIVERSAL LIGHTING TECH INC·Filed 2004·Granted Jul 3, 2007·22 cites·9 claims
- 0577US7468586B2Ballast with arc protection circuitOSRAM SYLVANIA INC·Filed 2007·Granted Dec 23, 2008·6 cites·7 claims
- 0675US12278569B2Systems and methods for inverter and DC/DC converter operationSCHNEIDER ELECTRIC IT CORP·Filed 2023·Granted Apr 15, 2025·0 cites·19 claims
- 0775US11157430B2DC-DC power converter with four way power conversionSCHNEIDER ELECTRIC IT CORP·Filed 2020·Granted Oct 26, 2021·1 cites·20 claims
- 0872US10547191B2Power management unit for intelligent traffic system applicationsSCHNEIDER ELECTRIC IT CORP·Filed 2016·Granted Jan 28, 2020·4 cites·20 claims
- 0972US10243376B2Stack DC power supply battery chargerSCHNEIDER ELECTRIC IT CORP·Filed 2016·Granted Mar 26, 2019·2 cites·14 claims
- 1071US12431733B2Systems and methods for controlling power devicesSCHNEIDER ELECTRIC IT CORP·Filed 2024·Granted Sep 30, 2025·0 cites·20 claims
- 1171US2025202373A1Systems and methods for inverter and dc/dc converter operationSCHNEIDER ELECTRIC IT CORP·Filed 2025·Application pending·0 cites
- 1270US7560868B2Ballast with filament heating and ignition controlOSRAM SYLVANIA INC·Filed 2007·Granted Jul 14, 2009·4 cites·21 claims
- 1364US7098607B2Electronic ballast with lossless snubber capacitor circuitUNIVERSAL LIGHTING TECH INC·Filed 2004·Granted Aug 29, 2006·7 cites·20 claims
- 1458US7696701B2Power supply for halogen lamp having an inverter and output circuitOSRAM SYLVANIA INC·Filed 2007·Granted Apr 13, 2010·1 cites·18 claims
- 1555US10566834B2Systems and methods for quick power delivery mode changesSCHNEIDER ELECTRIC IT CORP·Filed 2014·Granted Feb 18, 2020·1 cites·17 claims
- 1655US7098606B2Electronic ballast with open circuit voltage control and cable compensationUNIVERSAL LIGHTING TECH INC·Filed 2004·Granted Aug 29, 2006·5 cites·20 claims
- 1754US11909257B2Gain adjustment stage for controlling modular ups systemsSCHNEIDER ELECTRIC IT CORP·Filed 2021·Granted Feb 20, 2024·0 cites·18 claims
- 1852US7423386B2Power supply circuits and methods for supplying stable power to control circuitry in an electronic ballastUNIVERSAL LIGHTING TECH INC·Filed 2004·Granted Sep 9, 2008·9 cites·24 claims
- 1952US7098608B2Lossless circuit for sampling of lamp voltageUNIVERSAL LIGHTING TECH INC·Filed 2004·Granted Aug 29, 2006·4 cites·20 claims
- 2048US11824466B2Instantaneous line swell protection for UPSSCHNEIDER ELECTRIC IT CORP·Filed 2020·Granted Nov 21, 2023·0 cites·20 claims
- 2147US7560871B2Ballast with socket-to-fixture voltage limitingOSRAM SYLVANIA INC·Filed 2007·Granted Jul 14, 2009·0 cites·19 claims
- 2245US7459867B1Program start ballastOSRAM SYLVANIA INC·Filed 2007·Granted Dec 2, 2008·0 cites·24 claims
- 2344US10944319B2Flying battery with AC switch PFC front end for upsSCHNEIDER ELECTRIC IT CORP·Filed 2018·Granted Mar 9, 2021·0 cites·20 claims
- 2443US7132803B2High efficiency 4-lamp instant start ballastUNIVERSAL LIGHTING TECH INC·Filed 2004·Granted Nov 7, 2006·3 cites·17 claims
Join the waitlist — get patent alerts
Get an alert when Qinghong Yu files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →