Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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David A. Brence — 3 Patents

FMFmc: 3 patents #430 of 1,735Top 25%
Derry, PA: #16 of 70 inventorsTop 25%
Pennsylvania: #23,787 of 74,527 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
David A. Brence has been granted 3 US patents while listed as an inventor at Fmc. The first was granted in 1991 and the most recent in September 1999. David A. Brence ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list David A. Brence in Derry, PA, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5946891 Controllable stop vibratory feeder 1999-09-07 $13,742,000
5602433 Modular drive component for a vibratory feeder device Kenneth M. Marshall 1997-02-11 $4,256,000
5074404 Vibration isolator having adjustability feature William V. Gonda, Paul I. Sleppy 1991-12-24 $3,231,000