Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4997476 | Recovery of free aluminum from aluminum dross using plasma energy without use of a salt flux | Richard D. Lindsay, Jack L. Dochterman, Robert L. Kirkland | 1991-03-05 |
| 4918282 | Method and apparatus for heating molten steel utilizing a plasma arc torch | — | 1990-04-17 |
| 4734551 | Method and apparatus for heating molten steel utilizing a plasma arc torch | — | 1988-03-29 |