Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11794309 | Automated smart vise system | Paul J. Gray, Matthew H. Tinkle, Donald J. Hammer | 2023-10-24 |
| 11370075 | Expended lance tool holder for minimum quantity lubrication | Ethan Timothy Hughey, David Alan Stephenson | 2022-06-28 |
| 10603725 | Groover with peening flanks | David Alan Stephenson | 2020-03-31 |
| 10220453 | Milling tool with insert compensation | David Alan Stephenson, David Ozog | 2019-03-05 |
| 10221806 | Cylindrical engine bore | Rodney G. Whitbeck, David Alan Stephenson, Keith Raymond Bartle | 2019-03-05 |
| 10082187 | Mechanically roughened brake rotors | David Alan Stephenson, James Maurice Boileau, Timothy J. Potter | 2018-09-25 |
| 9511467 | Cylindrical surface profile cutting tool and process | Rodney G. Whitbeck, David Alan Stephenson, Keith Raymond Bartle | 2016-12-06 |
| 8726874 | Cylinder bore with selective surface treatment and method of making the same | Rodney G. Whitbeck, David Alan Stephenson, Keith Raymond Bartle | 2014-05-20 |