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

Aaron Karch

Caterpillar: 1 patents #4,437 of 8,398Top 55%
Metamora, IL: #139 of 208 inventorsTop 70%
Illinois: #48,934 of 84,256 inventorsTop 60%
Overall (All Time): #2,982,369 of 4,157,543Top 75%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9234451 Piston having combustion bowl shaped to balance combustion efficiency and emission properties David A. Pierpont, Daniel Lang, James A. Subatch, Jr. 2016-01-12