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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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David L. Singleton — 2 Patents

Poland, OH: #31 of 94 inventorsTop 35%
Ohio: #30,551 of 73,341 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
David L. Singleton has been granted 2 US patents. The first was granted in 1990 and the most recent in February 1991. David L. Singleton ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list David L. Singleton in Poland, OH, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4991766 Process of manufacturing a conical flight assembly Joseph W. Hunnicutt, III., Jimmy Taylor 1991-02-12
4961722 Conical screen for a vertical centrifugal separator Jimmy Taylor, Stanley A. Skeens, Dennis R. Runyon 1990-10-09