Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8801337 | Method of using a dome headed roof bolt | Roland Walker | 2014-08-12 |
| 7780377 | Friction stabilizers and roof bolt head markings | Steven E. Brady, Roland Walker | 2010-08-24 |
| 7712838 | Ground support insertion tool | Roland Walker, Phillip E. Gramich, Jr. | 2010-05-11 |
| 7588394 | Low profile mine roof support | Roland Walker | 2009-09-15 |