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

Duane A. Drost

Harris, IA: #1 of 1 inventorsTop 100%
Iowa: #8,735 of 15,303 inventorsTop 60%
Overall (All Time): #3,508,818 of 4,157,543Top 85%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6550746 Apparatus for removing carcass in hog confinement buildings 2003-04-22