Inventor
CHANG TZU-CHENG
TW11 patents
⚠️ This page may combine multiple inventors who share the name “CHANG TZU-CHENG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
KINPO ELECT INC
8 patentsUS11431864B1Aug 30, 2022
Duplex scanning device
KINPO ELECT INC1 citations59
US11126134B2Sep 21, 2021
Multi-function printer and hinge structure
KINPO ELECT INC1 citations58
US12015748B2Jun 18, 2024
Dual-axle linkage detection structure
KINPO ELECT INC0 citations48
US12259239B2Mar 25, 2025
Sheet detection device and detection method thereof
KINPO ELECT INC0 citations47
US12221304B2Feb 11, 2025
Sheet detection device and detection method thereof
KINPO ELECT INC0 citations47
US10481540B2Nov 19, 2019
Scanner cover
KINPO ELECT INC0 citations47
US10511736B1Dec 17, 2019
Document size sensing module
KINPO ELECT INC0 citations38
US10021259B1Jul 10, 2018
Scanning device and paper feeding module
KINPO ELECT INC0 citations37