Inventor
DUAN WANG-CHANG
CN14 patents
⚠️ This page may combine multiple inventors who share the name “DUAN WANG-CHANG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HONGFUJIN PREC IND SHENZHEN
8 patentsUS8376638B2Feb 19, 2013
Keyboard with rotation detection module and pivotable supporting member
HONGFUJIN PREC IND SHENZHEN2 citations60
US8373392B2Feb 12, 2013
Battery system and protection apparatus thereof
HONGFUJIN PREC IND SHENZHEN4 citations60
US7804195B2Sep 28, 2010
Power supply system and protection method
HONGFUJIN PREC IND SHENZHEN6 citations60
US7997090B2Aug 16, 2011
Air conditioning system, method of operation thereof, and vehicle using the same
HONGFUJIN PREC IND SHENZHEN1 citations50
US7663433B2Feb 16, 2010
Audio amplifier
HONGFUJIN PREC IND SHENZHEN1 citations50
US7990107B2Aug 2, 2011
Electronic device and charging control circuit
HONGFUJIN PREC IND SHENZHEN0 citations47
US7916440B2Mar 29, 2011
Power interface circuit and electronic device using the same
HONGFUJIN PREC IND SHENZHEN0 citations39
US8022737B2Sep 20, 2011
Electronic device and delay circuit thereof
HONGFUJIN PREC IND SHENZHEN0 citations35
DAI LUNG
4 patentsUS8082513B2Dec 20, 2011
Method and system for saving images from web pages
DAI LUNG4 citations61
US8243977B2Aug 14, 2012
Media player system, media player, and earphone
DAI LUNG5 citations60
US8103021B2Jan 24, 2012
Audio reproducing apparatus
DAI LUNG0 citations40
US8058912B2Nov 15, 2011
Electronic device and signal generator thereof
DAI LUNG0 citations35