DH

David J. Hakes

Caterpillar: 3 patents #33 of 636Top 6%
📍 Princeville, IL: #1 of 3 inventorsTop 35%
🗺 Illinois: #482 of 6,351 inventorsTop 8%
Overall (2025): #64,480 of 469,880Top 15%
3
Patents 2025

Issued Patents 2025

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
12292337 Roller temperature monitoring Aaron Michael Tetzloff, Eric James Johannsen 2025-05-06
12286174 Roller mounting and roller block assemblies for ground-engaging track system Eric James Johannsen 2025-04-29
12233969 Center tread idler in ground-engaging track system dimensioned to form a sprocketed idler wear pattern Eric James Johannsen 2025-02-25