Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6246712 | Arc furnace protection | Rodney Murison Whyte, Edwin Roos, Andrew Bryan Johnston, Jan Abraham Ferreira, Dirk Renaat Gabriel Faveere | 2001-06-12 |
| 6192065 | Method and apparatus for controlling arcing in a DC arc furnace | Jan Abraham Ferreira | 2001-02-20 |