Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Libo Ruan — 1 Patent

Taizhou City, CN: #239 of 442 inventorsTop 55%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
Libo Ruan has been granted 1 US patent. All of these patents were granted in 2015. Libo Ruan ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Libo Ruan in Taizhou City, CN.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9187419 Intermediates of sitagliptin and preparation process thereof Xianhua Pan, Weijin Li, Qunhui Zhang, Wansheng Yu, Fei Deng +3 more 2015-11-17