Jichen (Jeff) Qin has been granted 3 US patents while listed as an inventor at Flextronics Ap. The first was granted in 2014 and the most recent in March 2016. Jichen (Jeff) Qin ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Jichen (Jeff) Qin in Shangchuan, CN.