Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12376527 | Concave with adjustable openings | Andrew J. Theisen, Keith A. Johnson, Joseph W. Schaffer | 2025-08-05 |
| 12016270 | Concave with adjustable openings | Andrew J. Theisen, Keith A. Johnson, Joseph W. Schaffer | 2024-06-25 |
| 11497171 | Concave with adjustable openings | Andrew J. Theisen, Keith A. Johnson, Joseph W. Schaffer | 2022-11-15 |
| 10648051 | Reciprocating cutting blade with cladding | Keith A. Johnson | 2020-05-12 |
| 10462963 | Laser clad cutting edge for agricultural cutting components | Juan G. Sotelo, Keith A. Johnson, Michael A. Bechler | 2019-11-05 |
| 10412895 | Multi-thresh concave section for rotary combine | Andrew J. Theisen | 2019-09-17 |
| 10206331 | Cutting blade with hardened regions | Keith A. Johnson, Andrew J. Theisen | 2019-02-19 |
| 9992930 | Slicing disc mower knives | Keith A. Johnson | 2018-06-12 |
| 9717176 | Agricultural blades and machine parts with amorphous metal laser cladding | Casey Placek, Keith A. Johnson, Heather Baez | 2017-08-01 |
| 9686911 | Cutting blade with transverse hardened regions | Keith A. Johnson | 2017-06-27 |
| D768727 | Corn header chopper knife | Keith A. Johnson | 2016-10-11 |
| D767639 | Sugar cane harvester base cutter knife | Keith A. Johnson | 2016-09-27 |
| D759126 | Disc mower blade | Keith A. Johnson | 2016-06-14 |
| 8662132 | Roller with raised elements clad on the surface for driving a crop conveying belt | Daniel Cormier, Francois R. Talbot, Keith A. Johnson | 2014-03-04 |
| 8662131 | Method for conveying crop on a crop conveying belt drive by a roller with raised elements clad on the surface | Daniel Cormier, Francois R. Talbot, Keith A. Johnson | 2014-03-04 |
| 8484938 | Drive roller with ribs for the draper canvas of a crop header | Daniel Cormier, Francois R. Talbot, Keith A. Johnson | 2013-07-16 |
| 8371096 | Sickle bar assembly | Keith A. Johnson, Juan G. Sotelo | 2013-02-12 |
| 5161357 | Sickle bar joint splice construction | Benjamin A. Braunberger | 1992-11-10 |