Chun-Yao Chang has been granted 1 US patent while listed as an inventor at Phison Electronics. All of these patents were granted in 2016. Chun-Yao Chang ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Chun-Yao Chang in 埔鹽鄉, TW.