Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8518147 | Metal separation using a tunnel kiln furnace | James E. Bratina, Anthony J. Kriech | 2013-08-27 |
| 6682586 | Assemblies and methods for processing zinc-bearing materials | Scott W. Frame, James E. Bratina | 2004-01-27 |