Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11986919 | Tooling assembly with internal coolant passages for machines | David Alan Stephenson, Timothy George Beyer, Michael A. Kopmanis, David Ozog | 2024-05-21 |
| 11491594 | Tooling assembly with internal coolant passages for machines | David Alan Stephenson, Timothy George Beyer, Michael A. Kopmanis, David Ozog | 2022-11-08 |
| 10160129 | Mechanical roughening profile modification | David Alan Stephenson, Timothy George Beyer | 2018-12-25 |
| 6547479 | Spline, an assembly utilizing the spline, and a method for transferring energy | David Sell, Perry Phelan, Kin Sang Yeung | 2003-04-15 |