Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5281252 | Conversion of non-ferrous sulfides | Samuel Walton Marcuson, David E. Hall | 1994-01-25 |
| 5215571 | Conversion of non-ferrous matte | Samuel Walton Marcuson, David E. Hall | 1993-06-01 |
| 5180423 | Converter and method for top blowing nonferrous metal | Samuel Walton Marcuson, James H. Amson, Haydn Davies | 1993-01-19 |