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

Douglas D. Purdy — 2 Patents

ARAro: 1 patents #29 of 92Top 35%
INIngersoll-Rand: 1 patents #412 of 828Top 50%
Bryan, OH: #38 of 109 inventorsTop 35%
Ohio: #30,338 of 73,341 inventorsTop 45%
Overall (All Time): #2,271,845 of 4,157,543Top 55%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5649813 Chamber insulation for prevention of icing in air motors Stephen D. Able, Nicholas Kozumplik, Jr. 1997-07-22
D370488 Diaphragm pump Nicholas Kozumplik, Jr., Robert C. Elfers 1996-06-04