Inventor · disambiguated record
Cheng-Fen Chang
Also filed as: CHANG CHENG P · CHANG CHENG-FEN
3 granted patents·9 pending applications·7 citations·filing 2004–2015
60Inventor score
Top patents by PatentIndex Score
12 records- 0157US8044599B2Light string with alternate LED lamps and incandescent lampsCHANG CHU-CHENG·Filed 2009·Granted Oct 25, 2011·4 cites·10 claims
- 0254US8053995B2LED light string without additional resistorsCHANG CHU-CHENG·Filed 2008·Granted Nov 8, 2011·1 cites·1 claims
- 0342US7597454B2Christmas light string with socket for connecting to another christmas light stringCHANG CHU-CHENG·Filed 2007·Granted Oct 6, 2009·2 cites·1 claims
- 0442US2010148694A1LED light string with capacitor based rectifier filter for increasing output voltageCHANG CHU-CHENG·Filed 2008·Application pending·0 cites
- 0542US2010102735A1Led light string with zener diodes or resistors as shuntsCHANG CHU-CHENG·Filed 2008·Application pending·0 cites
- 0642US2010109553A1Led bulb with zener diode, zener diode assembly or resistor connected in seriesCHANG CHU-CHENG·Filed 2008·Application pending·0 cites
- 0742US2010315014A1LED light stringCHANG CHENG-FEN·Filed 2009·Application pending·0 cites
- 0841US2009322236A1Christmas light string with LED bulb loop and incandescent light bulb loopCHANG CHU-CHENG·Filed 2008·Application pending·0 cites
- 0940US2015216005A1Light stringCHANG CHU-CHENG·Filed 2014·Application pending·0 cites
- 1035US2005280016A1PCB-based surface mount LED device with silicone-based encapsulation structureMOK THYE L·Filed 2004·Application pending·0 cites
- 1128US2017102134A1Tensile Resistant Light StringPOLESTAR ELECTRIC IND CO LTD·Filed 2015·Application pending·0 cites
- 1224US2016198583A1AC to DC Power Adapter with an AC OutputPOLESTAR ELECTRIC IND CO LTD·Filed 2015·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →