Inventor
CHANG CHIH-MIN
TW42 patents
⚠️ This page may combine multiple inventors who share the name “CHANG CHIH-MIN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CHANG CHIH-MIN
28 patentsUSD749384SFeb 16, 2016
Ratch wheel
CHANG CHIH-MIN23 citations92
US7743685B2Jun 29, 2010
Ratchet wrench
CHANG CHIH-MIN32 citations92
USD584932SJan 20, 2009
Wrench
CHANG CHIH-MIN18 citations92
USD751363SMar 15, 2016
Socket for a wrench
CHANG CHIH-MIN8 citations84
USD743223SNov 17, 2015
Ratch wheel
CHANG CHIH-MIN12 citations84
USD739695SSep 29, 2015
Ratch wheel
CHANG CHIH-MIN16 citations84
USD713225SSep 16, 2014
Wrench
CHANG CHIH-MIN10 citations84
US8631723B2Jan 21, 2014
Ratchet wrench being conveniently assembled
CHANG CHIH-MIN8 citations84
US8230766B2Jul 31, 2012
Wrench for different-sized nuts
CHANG CHIH-MIN12 citations84
USD661560SJun 12, 2012
Wrench
CHANG CHIH-MIN7 citations84
USD660666SMay 29, 2012
Ratchet wrench
CHANG CHIH-MIN16 citations84
USD648995SNov 22, 2011
Shearing pliers
CHANG CHIH-MIN10 citations84
USD639625SJun 14, 2011
Foldable wrench
CHANG CHIH-MIN9 citations84
US7146882B1Dec 12, 2006
Ratchet wrench
CHANG CHIH-MIN8 citations74
USD776503SJan 17, 2017
Handle for hand tool
CHANG CHIH-MIN2 citations73
US9511485B2Dec 6, 2016
Wrench capable of adjusting operating angle
CHANG CHIH-MIN6 citations73
US9364943B2Jun 14, 2016
Quick rotatable wrench
CHANG CHIH-MIN4 citations73
USD751362SMar 15, 2016
Wrench
CHANG CHIH-MIN4 citations73
USD749387SFeb 16, 2016
Open-end wrench
CHANG CHIH-MIN3 citations73
USD713227SSep 16, 2014
Wrench
CHANG CHIH-MIN4 citations73
US8770066B2Jul 8, 2014
Water and dust resistant ratchet wrench
CHANG CHIH-MIN4 citations73
US9505105B2Nov 29, 2016
Rotatable handle for wrench
CHANG CHIH-MIN2 citations63
USD713226SSep 16, 2014
Wrench
CHANG CHIH-MIN2 citations63
USD660109SMay 22, 2012
Ratchet wrench
CHANG CHIH-MIN5 citations63
USD567603SApr 29, 2008
Wrench
CHANG CHIH-MIN3 citations63
US9623549B2Apr 18, 2017
Rotary wrench
CHANG CHIH-MIN1 citations52
US8683893B2Apr 1, 2014
Ratchet wrench
CHANG CHIH-MIN0 citations52
US9205537B2Dec 8, 2015
Detachable ratchet wrench
CHANG CHIH-MIN0 citations42
CHANG CHIH MIN
6 patentsUSD912484SMar 9, 2021
Socket of wrench
CHANG CHIH MIN9 citations86
US12246432B2Mar 11, 2025
Box capable of replacement of half box body thereof
CHANG CHIH MIN0 citations62
US11260510B2Mar 1, 2022
Tool with label structure
CHANG CHIH MIN0 citations62
US12569976B2Mar 10, 2026
Tool hanger
CHANG CHIH MIN0 citations52
US11396087B2Jul 26, 2022
Easily assembled ratchet wrench
CHANG CHIH MIN0 citations52
US11364599B2Jun 21, 2022
Two-way ratchet wrench
CHANG CHIH MIN0 citations52