Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Douglas Fischer — 8 Patents

JDJohn Deere: 4 patents #1,200 of 5,518Top 25%
LILittelfuse: 1 patents #227 of 421Top 55%
OEOtto Engineering: 1 patents #13 of 28Top 50%
Dike, IA: #2 of 13 inventorsTop 20%
Iowa: #1,945 of 15,303 inventorsTop 15%
Overall (All Time): #612,706 of 4,157,543Top 15%
8 Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
11988015 Swimming pool intake filter cover device 2024-05-21
10746346 Quick release universal mount 2020-08-18
9428025 Axle suspension Jacob J. Foxen, Thomas Butts, Donald E. Young 2016-08-30
9347844 Three point hitch draft sensing system Andrew M. Tilkes, Benjamin J. Heimbuch, Edwin R. Kreis, Mark S. Earley, Dennis A. Bowman +2 more 2016-05-24
9323279 Adjustable grip hand rest Steven P. Moehling 2016-04-26
7721832 Walking beam suspension 2010-05-25
7659804 High voltage/high current fuse Edwin James Harris, IV, Jeffrey J. Ribordy, William P. Brown, John Adamczyk, Gregory Stumpo 2010-02-09
6772714 Electronic fan control David Rick Laird, James Hugh Ross, Barry Plassman, Gary J. Treichel, James A. Miller +1 more 2004-08-10