Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5868816 | Process for adjusting the composition of a liquid metal such as steel, and plant for its implementation | Henri Gaye, Jean-Luc Roth | 1999-02-09 |
| 4707183 | Method of operating a blast furnace with plasma heating | Lucien De Saint-Martin | 1987-11-17 |