Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5190577 | Replacement of argon with carbon dioxide in a reactor containing molten metal for the purpose of refining molten metal | Curtis L. Bermel, Daniel Urban | 1993-03-02 |
| 4990183 | Process for producing steel having a low content of nitrogen in a ladle furnace | Noel F. Lutgen, Jean Foulard | 1991-02-05 |
| 4828609 | Method to protect the surface of metal in vertical melting furnaces | Jocelyne McGeever, Casey McGeever, Greg Carr | 1989-05-09 |
| 4806156 | Process for the production of a bath of molten metal or alloys | Noel F. Lutgen | 1989-02-21 |