Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12403539 | Standpipe recirculation systems for material removal machines | Yun Zhao, Calvin States Nelson, Roland Schaffer | 2025-09-02 |
| 12179299 | Machine tool with recirculating coolant filtration system | Tony Emil Strombach, Roland Schaefer, Bryan J. Kordus | 2024-12-31 |