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

David Barnsdale — 3 Patents

UNUnknown: 3 patents #7,366 of 83,584Top 9%
London, GB: #2,677 of 11,041 inventorsTop 25%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
David Barnsdale has been granted 3 US patents while listed as an inventor at Unknown. The first was granted in 2015 and the most recent in January 2019. David Barnsdale ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list David Barnsdale in London, GB.

Patents per Year

Patents granted per year, 2015 to 2019Bar chart with a peak of 1 patents in 2015.peak 12015: 1 patents20152017: 1 patents20172019: 1 patents2019

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
10183303 Maintenance device for fasteners Christopher Cunningham 2019-01-22
9566600 Maintenance device for fasteners Christopher Cunningham 2017-02-14
9066582 Maintenance device for fasteners Christopher Cunningham 2015-06-30