Cheng-Yu Ma has been granted 9 US patents while listed as an inventor at United Microelectronics. The first was granted in 2000 and the most recent in July 2023. Cheng-Yu Ma ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list Cheng-Yu Ma in Tainan, MO, TW.