Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Darrell L. Pruehsner — 1 Patent

HAHyundai Electronics America: 1 patents #75 of 148Top 55%
SLSymbios Logic: 1 patents #28 of 87Top 35%
ATAT&T: 1 patents #10,636 of 18,772Top 60%
Bellvue, CO: #21 of 39 inventorsTop 55%
Colorado: #24,258 of 40,980 inventorsTop 60%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
Darrell L. Pruehsner has been granted 1 US patent while listed as an inventor at AT&T. All of these patents were granted in 1997. Darrell L. Pruehsner ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Darrell L. Pruehsner in Bellvue, CO, US.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5701309 Automated test equipment digital tester expansion apparatus Kevin Gearhardt 1997-12-23