Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12376527 | Concave with adjustable openings | Keith A. Johnson, Neal J. Stoffel, Joseph W. Schaffer | 2025-08-05 |
| 12146369 | Boring bit or other bit with hard face wear resistance material | Keith A. Johnson, Mark More, Casey Placek | 2024-11-19 |
| 12016270 | Concave with adjustable openings | Keith A. Johnson, Neal J. Stoffel, Joseph W. Schaffer | 2024-06-25 |
| 11987889 | Boring bit component with hard face wear resistance material with subsequent heat treatment | Keith A. Johnson, Mark More, Casey Placek | 2024-05-21 |
| 11497171 | Concave with adjustable openings | Keith A. Johnson, Neal J. Stoffel, Joseph W. Schaffer | 2022-11-15 |
| 10412895 | Multi-thresh concave section for rotary combine | Neal J. Stoffel | 2019-09-17 |
| 10206331 | Cutting blade with hardened regions | Neal J. Stoffel, Keith A. Johnson | 2019-02-19 |