Inventor
CHANG CHIEN-FENG
TW9 patents
⚠️ This page may combine multiple inventors who share the name “CHANG CHIEN-FENG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OPTO TECH CORP
7 patentsUS7303310B2Dec 4, 2007
Structure for a high efficiency and water-proof lighting device
OPTO TECH CORP71 citations94
US7542861B1Jun 2, 2009
Method and system for LED calibration
OPTO TECH CORP23 citations89
US10094970B1Oct 9, 2018
Light-emitting apparatus
OPTO TECH CORP2 citations65
US7429982B2Sep 30, 2008
Digital lighting control system
OPTO TECH CORP6 citations61
US10073212B1Sep 11, 2018
Lamp structure
OPTO TECH CORP1 citations49
USD811002SFeb 20, 2018
Light fixture
OPTO TECH CORP1 citations49
US7817028B2Oct 19, 2010
System and method for driving LED vehicle lights
OPTO TECH CORP0 citations37