Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Clifford Duff — 3 Patents

TWThe Will-Burt: 1 patents #17 of 29Top 60%
UNUnknown: 1 patents #29,356 of 83,584Top 40%
General Motors: 1 patents #9,441 of 18,328Top 55%
Medina, OH: #200 of 501 inventorsTop 40%
Ohio: #23,545 of 73,341 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Clifford Duff has been granted 3 US patents while listed as an inventor at The Will-Burt. The first was granted in 1982 and the most recent in December 2016. Clifford Duff ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Clifford Duff in Medina, OH, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9520642 Pneumatic non-locking low-profile telescoping masts Paul Bradford Blackwelder, Cameron Jay Young 2016-12-13
D677827 Multi-sided light emitting diode display 2013-03-12
4328368 Method for reclaiming polyurethane foam Robert J. Salloum 1982-05-04 $23,627,000