Eun-Jung Ryu has been granted 2 US patents while listed as an inventor at Amicogen. The first was granted in 2001 and the most recent in October 2005. Eun-Jung Ryu ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Eun-Jung Ryu in Seojong-myeon, KR.