Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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N. Keith Lay — 4 Patents

Caterpillar: 4 patents #1,659 of 8,398Top 20%
Peoria, IL: #459 of 1,769 inventorsTop 30%
Illinois: #21,447 of 84,256 inventorsTop 30%
Overall (All Time): #1,257,099 of 4,157,543Top 35%
4 Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
6990390 Method and apparatus to detect change in work tool Ronald O. Groth, Carl A. Kemner 2006-01-24
6282477 Method and apparatus for displaying an object at an earthworking site Adam J. Gudat, James J. Kalafut, Robert J. Price 2001-08-28
6037901 System and method for communicating information for fleets of earthworking machines Lonnie J. Devier, Satish M. Shetty, Adam J. Gudat 2000-03-14
5410325 Antenna mounting apparatus Douglas W. Friedrich, Carl A. Kemner, Joel L. Peterson 1995-04-25