Sun-Chieh Chien has been granted 74 US patents while listed as an inventor at United Microelectronics. The first was granted in 1994 and the most recent in April 2014. Sun-Chieh Chien ranks #26,215 of 4,157,543 US inventors in our database (top 0.63%). Patent records list Sun-Chieh Chien in Taipei, TW.