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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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John A. O'Brien — 5 Patents

VIVickers: 2 patents #29 of 188Top 20%
OMOutboard Marine: 1 patents #244 of 426Top 60%
Birmingham, AL: #201 of 1,401 inventorsTop 15%
Alabama: #1,539 of 10,951 inventorsTop 15%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
John A. O'Brien has been granted 5 US patents while listed as an inventor at Vickers. The first was granted in 1987 and the most recent in December 2025. John A. O'Brien ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list John A. O'Brien in Birmingham, AL, US.

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12508033 Occlusion device having spherical secondary shape and mandrel for forming same Conor O'Sullivan, Frank Ryan 2025-12-30
5363738 Portable electrohydraulic trainer Richard J. Kotch, George A. McConnell 1994-11-15 $2,048,000
5354203 Portable hydraulics trainer Richard J. Kotch 1994-10-11 $2,722,000
4673012 Tool tensioning device for debarking machine James H. Hutson 1987-06-16
4643236 Feed roll tensioning device James H. Hutson 1987-02-17 $1,033,000