DJ

David L. Johnson

Pioneer (Corteva): 2 patents #100 of 284Top 40%
📍 Johnston, IA: #10 of 40 inventorsTop 25%
🗺 Iowa: #245 of 1,748 inventorsTop 15%
Overall (2017): #160,132 of 506,227Top 35%
2
Patents 2017

Issued Patents 2017

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9615511 Combine harvester and associated method for gathering grain Matthew John Rizzo, James R. Schmidt, Barry Stott, Zane Wesley Unrau 2017-04-11
9554517 Separably-driven rotor portions and associated method for threshing grain 2017-01-31