Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Eric S. Engelmann — 6 Patents in 2021

Caterpillar: 6 patents #15 of 826Top 2%
Delano, MN: #1 of 16 inventorsTop 7%
Minnesota: #202 of 7,038 inventorsTop 3%
Overall (2021): #23,751 of 548,734Top 5%
6 Patents 2021

Issued Patents 2021

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11209812 Methods and systems for tracking milling rotor bit wear Colton J. Hirman, Dustin W. Sondreal 2021-12-28 $42,864,000
11174604 Milling systems and methods for a milling machine Nicholas B. Johnson 2021-11-16 $28,059,000
11105051 Inclination control for construction machines Mark A. Tarvin, Conwell K. Rife, Jr. 2021-08-31 $50,441,000
11015305 Milling machine having a hydraulic dampening system Conwell K. Rife, Jr., Matthew James Sirovatka 2021-05-25 $119,659,000
10995460 Cold planer dust mitigation system Colton J. Hirman 2021-05-04 $175,263,000
10949786 Cold planer material transport management system John L. Marsolek 2021-03-16 $78,504,000