Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
DU

David E. Udow — 3 Patents

Whistler, CA: #8 of 47 inventorsTop 20%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
David E. Udow has been granted 3 US patents. The first was granted in 2008 and the most recent in February 2017. David E. Udow ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list David E. Udow in Whistler, BC, CA.

Patents per Year

Patents granted per year, 2008 to 2017Bar chart with a peak of 1 patents in 2008.peak 12008: 1 patents20082014: 1 patents20142017: 1 patents2017

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
9573605 Continuous assist zipline braking and control system Charles Z. Steele, Robert L. Steele 2017-02-21
8708109 Continuous assist zipline braking and control system Charles Z. Steele, Robert L. Steele 2014-04-29
7381137 Zipline braking and motion-arrest system Robert L. Steele, Charles Z. Steele 2008-06-03