Keqi Gan has been granted 3 US patents while listed as an inventor at Dsm Ip Assets B.V.. The first was granted in 2001 and the most recent in February 2011. Keqi Gan ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Keqi Gan in Belleville, NJ, US.