Sumith Ranil Wickramasinghe has been granted 5 US patents. The first was granted in 1998 and the most recent in November 2018. Sumith Ranil Wickramasinghe ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Sumith Ranil Wickramasinghe in Fayetteville, AR, US.