Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8157887 | Metal recovery system | — | 2012-04-17 |
| 6682586 | Assemblies and methods for processing zinc-bearing materials | Shannon Wilson, James E. Bratina | 2004-01-27 |
| 5278111 | Electric arc furnace dust as raw material for brick | — | 1994-01-11 |
| 4367685 | Process and apparatus for precisely metering quantities of granular or pulverulent solids | David Frame | 1983-01-11 |
| 4250816 | Particulate solid fuel combustion system | John S. Angevine, Stephen B. Yacura | 1981-02-17 |