Issued Patents 2017
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9829105 | Nitride coated piston ring | Thomas J. Smith | 2017-11-28 |
| 9638322 | Piston ring with dual coating | Thomas J. Smith | 2017-05-02 |
| 9611532 | Coating additive | Thomas Stong, Thomas J. Smith | 2017-04-04 |