Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Carl Nelson Leonhardt — 1 Patent

INInterbold: 1 patents #34 of 46Top 75%
Massillon, OH: #173 of 330 inventorsTop 55%
Ohio: #42,926 of 73,341 inventorsTop 60%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
Carl Nelson Leonhardt has been granted 1 US patent while listed as an inventor at Interbold. All of these patents were granted in 1998. Carl Nelson Leonhardt ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Carl Nelson Leonhardt in Massillon, OH, US.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5709159 Delivery access device Scott A. Mercer, David A. Peters 1998-01-20