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 | Jean Alex Michard, Jean-Luc Roth | 1999-02-09 |
| 5562753 | Method and installation for producing molten steel from ferrous materials rich in carbonaceous materials | Yann de Lassat de Pressigny, Jean-Luc Roth, Yves Zbaczyniak | 1996-10-08 |