Inventor

CHANG YEH-CHING

TW6 patents

⚠️ This page may combine multiple inventors who share the name “CHANG YEH-CHING”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CHANG YEH-CHING

2 patents

US8915169B2Dec 23, 2014

Adjustable driving tool

CHANG YEH-CHING3 citations57

US8770071B2Jul 8, 2014

Electronic torque wrench with a rotatable display unit

CHANG YEH-CHING1 citations46

CHANG YEH CHING

1 patent

US10434632B2Oct 8, 2019

Tool connector

CHANG YEH CHING10 citations78

(unassigned)

1 patent

US6612435B1Sep 2, 2003

Tool case

MAKITA U S A INC

1 patent

USD1118295SMar 17, 2026

Driver bit

MAKITA U S A INC0 citations56

UNITEK ENTPR CORP

1 patent

US11628546B2Apr 18, 2023

Tool connecting rod

UNITEK ENTPR CORP1 citations52