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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
JL

John E. Leonard — 1 Patent

NONordco: 1 patents #38 of 74Top 55%
Middlefield, CT: #33 of 49 inventorsTop 70%
Connecticut: #21,465 of 34,797 inventorsTop 65%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
John E. Leonard has been granted 1 US patent while listed as an inventor at Nordco. All of these patents were granted in 2022. John E. Leonard ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list John E. Leonard in Middlefield, CT, US.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11254336 Rail flaw detector Paul Sanders Underwood, David W. Giragosian, Ian Wallace McGrath Gage, Phillip Edwards, Jacob Eisler +2 more 2022-02-22