Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
DA

Dwayne E. Arff

Caterpillar: 2 patents #2,982 of 8,398Top 40%
Peoria, IL: #777 of 1,769 inventorsTop 45%
Illinois: #34,584 of 84,256 inventorsTop 45%
Overall (All Time): #2,287,285 of 4,157,543Top 60%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5421657 Apparatus for preloading a torque converter thrust bearing Barrett A Flinn, Wallace A. Lelm 1995-06-06
H964 Apparatus for sensing the speed of an element within a torque converter Martin Olson 1991-09-03