Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Derrell Smith — 4 Patents

Moore, OK: #17 of 95 inventorsTop 20%
Oklahoma: #2,661 of 12,736 inventorsTop 25%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Derrell Smith has been granted 4 US patents. The first was granted in 1991 and the most recent in January 1994. Derrell Smith ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Derrell Smith in Moore, OK, US.

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5277395 Machinery base pad Aladino Cassar 1994-01-11
5220137 Engine exhaust muffler Kenneth R. Howerton 1993-06-15
5149050 Machinery base pad Aladino Cassar 1992-09-22
5076393 Engine exhaust muffler Kenneth R. Howerton 1991-12-31