Inventor

CHANG CHUN-YU

TW4 patents

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

LIN LI-HUA

1 patent

US9733079B2Aug 15, 2017

Double-bead horizontal and vertical spirit level, apparatus using the spirit level, and method of measuring distance and height by using the apparatus

LIN LI-HUA2 citations62

GLOBALWAFERS CO LTD

1 patent

US12584959B2Mar 24, 2026

Signal processing method and abnormal sound detection system

GLOBALWAFERS CO LTD0 citations34

AETAS TECHNOLOGY INC

1 patent

US8830532B2Sep 9, 2014

Printing control method and printing system sending color components to the printer except for color components that contain zeros for all content

AETAS TECHNOLOGY INC0 citations33

CHANG CHUN-YU

1 patent

US8472072B2Jun 25, 2013

Method for improving printing quality and related printing system

CHANG CHUN-YU0 citations25