Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Allen Lehmen — 4 Patents in 2021

Ford: 4 patents #289 of 2,765Top 15%
Howell, MI: #2 of 55 inventorsTop 4%
Michigan: #640 of 9,874 inventorsTop 7%
Overall (2021): #54,512 of 548,734Top 10%
4 Patents 2021

Issued Patents 2021

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11073063 Gasoline particulate filter diagnostics Michiel J. Van Nieuwstadt, Douglas Raymond Martin, John Eric Rollinger, Sumanth Reddy Dadam, Rohit Bhat 2021-07-27 $16,550,000
11073064 Gasoline particulate filter diagnostics Michiel J. Van Nieuwstadt, Douglas Raymond Martin, John Eric Rollinger, Sumanth Reddy Dadam, Rohit Bhat 2021-07-27 $16,550,000
11041423 Method and system for leak detection at a particulate filter Eric R. Beatham, Michiel J. Van Nieuwstadt, Douglas Raymond Martin, Raymond Henry Berger 2021-06-22 $18,227,000
10928275 Systems and methods for coordinating engine-off vehicle diagnostic monitors Sumanth Reddy Dadam, Robert Roy Jentz, Adam Krach, Douglas Raymond Martin, Rohit Bhat +1 more 2021-02-23 $10,735,000