Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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David R. Leeper — 3 Patents

TTThe Timken: 3 patents #41 of 291Top 15%
Canton, OH: #207 of 654 inventorsTop 35%
Ohio: #23,384 of 73,341 inventorsTop 35%
Overall (All Time): #1,606,227 of 4,157,543Top 40%
3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6792815 Multiaxis ring load cell Graham McDearmon, David Walter, Doug H. Smith 2004-09-21
6535135 Bearing with wireless self-powered sensor unit Michael L. French, Khan M. Iftekharuddin, Ram P. Samy, Wen-Ruey Hwang 2003-03-18
5648611 Process for measuring the case depth of case-carburized steel Surrendra Singh, Rosendo Fuquen 1997-07-15