Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12419719 | Camera apparatus for coordinated operation with surgical tools | Ryan Kellar, James Kitchen, Andrew W. Melton, Tzung-Yu Hsu, Rachel M. Frank +5 more | 2025-09-23 |
| 12146533 | Clutch assembly and rotating system including the same | Steven John Kowal, David T. Vierk | 2024-11-19 |
| 11746847 | Clutch system and vehicle transmission system including the same | Steven John Kowal, Richard W. Pridgen, Jr., David T. Vierk | 2023-09-05 |
| 11092200 | Friction plate and clutch assembly including the same | Paul H. Elsesser, Richard W. Pridgen, Jr., David T. Vierk | 2021-08-17 |
| 10378631 | Friction clutch having a first friction material engageable in a partially engaged position and a second friction material engageable in a fully engaged position | David T. Vierk | 2019-08-13 |