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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Sumith Ranil Wickramasinghe — 5 Patents

HEHemasure: 2 patents #6 of 18Top 35%
UAUniversity Of Arkansas: 2 patents #214 of 445Top 50%
CUColorado State University: 1 patents #268 of 752Top 40%
UDUniversität Duisburg-Essen: 1 patents #16 of 120Top 15%
Fayetteville, AR: #99 of 605 inventorsTop 20%
Arkansas: #810 of 5,804 inventorsTop 15%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
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.

Patents per Year

Patents granted per year, 1998 to 2018Bar chart with a peak of 1 patents in 1998.peak 11998: 1 patents19982001: 1 patents20012015: 1 patents20152016: 1 patents20162018: 1 patents2018

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
10118168 Catalytic membranes and applications thereof Xianghong Qian, Mathias Ulbricht, Qian Yang 2018-11-06
9339803 Catalytic membranes and applications thereof Xianghong Qian, Mathias Ulbricht, Qian Yang 2016-05-17
9132389 Magnetically responsive membranes Xianghong Qian, Heath H. Himstedt, Mathias Ulbricht, Michael J. Semmens 2015-09-15
6177019 Method and apparatus for removing tumor cells from tumor cell-contaminated stem cell products Franco Castino 2001-01-23
5846427 Extra-lumenal crossflow plasmapheresis devices and method of use thereof Stephen B. Kessler 1998-12-08