Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Mark E. Barker

JDJohn Deere: 3 patents #86 of 734Top 15%
Johnston, IA: #8 of 44 inventorsTop 20%
Iowa: #138 of 1,785 inventorsTop 8%
Overall (2021): #72,789 of 548,734Top 15%
3 Patents 2021

Issued Patents 2021

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
10966364 Work vehicle with row unit having variable steering angle Cole L. Murray, Grant J. Wonderlich, Michael E. Frasier, Nathan A. Mariman 2021-04-06
10913086 Drift sensor for agricultural spraying Richard A. Humpal, Aaron A. Wells 2021-02-09
10905057 Thermal imaging drift sensor for agricultural spraying Ashish Anil Paralikar, Richard A. Humpal, Jui Desai, Paresh Bharatiya, Aaron A. Wells 2021-02-02