Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10053627 | Method and apparatus for testing coal coking properties | Jacob P. Sarpen, John Francis Quanci, Mark Anthony Ball, Paul J. Norton, Roy J. Griffey | 2018-08-21 |
| 9169439 | Method and apparatus for testing coal coking properties | Jacob P. Sarpen, John Francis Quanci, Mark Anthony Ball, Paul J. Norton, Roy J. Griffey | 2015-10-27 |