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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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David E. Ewel — 3 Patents

EAEaton: 1 patents #1,900 of 3,708Top 55%
MIMico: 1 patents #9 of 22Top 45%
Mankato, MN: #39 of 164 inventorsTop 25%
Minnesota: #19,251 of 52,454 inventorsTop 40%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
David E. Ewel has been granted 3 US patents while listed as an inventor at Eaton. The first was granted in 1999 and the most recent in December 2018. David E. Ewel ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list David E. Ewel in Mankato, MN, US.

Patents per Year

Patents granted per year, 1999 to 2018Bar chart with a peak of 1 patents in 1999.peak 11999: 1 patents19992005: 1 patents20052018: 1 patents2018

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
10160428 Trailer break-away switch 2018-12-25
6866348 Electronically controlled full power brake valve 2005-03-15
5960694 Hydrostatic power steering system having reduced wheel slip David Thomas, Timothy A. Hjelsand, Jerry F. Carlin, Russell P. Schuchmann 1999-10-05 $3,574,000