Hao-Hsiang Chang has been granted 4 US patents while listed as an inventor at Gingy Technology. The first was granted in 2011 and the most recent in July 2020. Hao-Hsiang Chang ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Hao-Hsiang Chang in Hsinchu, TW.