Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
DH

David Heffernan — 1 Patent in 2021

DEDelavan: 1 patents #12 of 26Top 50%
Urbandale, IA: #8 of 27 inventorsTop 30%
Iowa: #535 of 1,785 inventorsTop 30%
Overall (2021): #484,412 of 548,734Top 90%
1 Patents 2021

Issued Patents 2021

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11015745 Tube joints, brazed tube joint assemblies, and methods of making tube joints Derrick Clausen, Steven J. Myers 2021-05-25