Joon Sung Ryu has been granted 5 US patents while listed as an inventor at Samsung. The first was granted in 2006 and the most recent in May 2008. Joon Sung Ryu ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Joon Sung Ryu in Seodo-myeon, KR.