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USPTO Patent Rankings Data through Dec 31, 2025
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Cely O'Brien — 2 Patents

DUDuracell: 2 patents #75 of 239Top 35%
Danbury, CT: #402 of 826 inventorsTop 50%
Connecticut: #15,713 of 34,797 inventorsTop 50%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Cely O'Brien has been granted 2 US patents while listed as an inventor at Duracell. All of these patents were granted in 1998. Cely O'Brien ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Cely O'Brien in Danbury, CT, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D403299 Battery case Richard B. Smith, David Suske 1998-12-29
D402955 Battery case Richard B. Smith, David Suske 1998-12-22