Chieh-Hao Hsu has been granted 1 US patent while listed as an inventor at Darwin Precisions. All of these patents were granted in 2016. Chieh-Hao Hsu ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Chieh-Hao Hsu in Taoyuan, TW.