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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Darryl R. T. Smith — 2 Patents

ExxonMobil: 2 patents #3,942 of 10,161Top 40%
Swindon, GB: #256 of 597 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Darryl R. T. Smith has been granted 2 US patents while listed as an inventor at ExxonMobil. The first was granted in 1994 and the most recent in June 1995. Darryl R. T. Smith ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Darryl R. T. Smith in Swindon, GB.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5423890 Fuel oil additive and compositions Iain More, Wayne Camarco 1995-06-13 $98,813,000
5364419 Fuel oil additives Robert D. Tack, David P. Gillingham 1994-11-15 $58,419,000