Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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David Piepenbrink — 2 Patents in 2021

ATAT&T: 2 patents #242 of 1,158Top 25%
Chicago, IL: #244 of 1,816 inventorsTop 15%
Illinois: #1,310 of 8,822 inventorsTop 15%
Overall (2021): #168,329 of 548,734Top 35%
2 Patents 2021

Issued Patents 2021

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
10951674 Public/private communications paths Lee M. Chow, James T. Sofos 2021-03-16 $36,408,000
10887638 Processing and distribution of video-on-demand content items Lee M. Chow, Stephen Rys, James T. Sofos 2021-01-05 $25,728,000