Inventor · disambiguated record
Chien-Feng Chang
Also filed as: CHANG CHIEN-FENG
9 granted patents·1 pending application·105 citations·filing 2006–2023
85Inventor score
Top patents by PatentIndex Score
10 records- 0191US7303310B2Structure for a high efficiency and water-proof lighting deviceOPTO TECH CORP·Filed 2006·Granted Dec 4, 2007·71 cites·13 claims
- 0289US7542861B1Method and system for LED calibrationOPTO TECH CORP·Filed 2008·Granted Jun 2, 2009·23 cites·7 claims
- 0383US12133344B2Multi-directional multi-joint turning piece and display device thereofSTAR ASIA VISION CORP·Filed 2023·Granted Oct 29, 2024·1 cites·9 claims
- 0475US7429982B2Digital lighting control systemOPTO TECH CORP·Filed 2006·Granted Sep 30, 2008·6 cites·10 claims
- 0568US10094970B1Light-emitting apparatusOPTO TECH CORP·Filed 2017·Granted Oct 9, 2018·2 cites·10 claims
- 0664US10073212B1Lamp structureOPTO TECH CORP·Filed 2017·Granted Sep 11, 2018·1 cites·10 claims
- 0760US11895787B2Multi-directional multi-joint turning piece and display device thereofSTAR ASIA VISION CORP·Filed 2021·Granted Feb 6, 2024·0 cites·6 claims
- 0847US7817028B2System and method for driving LED vehicle lightsOPTO TECH CORP·Filed 2008·Granted Oct 19, 2010·0 cites·8 claims
- 0938US2018356068A1Reflective light-emitting apparatusOPTO TECH CORP·Filed 2017·Application pending·0 cites
- 1030USD811002SLight fixtureOPTO TECH CORP·Filed 2016·Granted Feb 20, 2018·1 cites·1 claims
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