Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10213794 | Cyclone separator with flow altering baffles | James Martin Miller, Adam Brandt, William Sinton, Scott Davies | 2019-02-26 |
| 6686752 | Wear indicator for refractory linings | William L. Heumann, Frank J. Elvin, Russell J. Lewis, Edwin D. Tenney, Joseph A. Urban +1 more | 2004-02-03 |