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

Duane A. Drost

Harris, IA: #1 of 1 inventorsTop 100%
Iowa: #239 of 1,101 inventorsTop 25%
Overall (2003): #233,407 of 273,478Top 90%
1 Patents 2003

Issued Patents 2003

Showing 1–1 of 1 patents

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