Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE32192 | Refractory piece permeable to gases | Charles Roederer, Jean-Claude Grosjean, Roland Grave, F. Schleimer, F. Goedert +3 more | 1986-06-24 |
| 4382817 | Process for periodically and pneumatically stirring a bath of molten metal | Jean-Claude Grosjean | 1983-05-10 |
| 4340208 | Refractory piece permeable to gases | Charles Roederer, Jean-Claude Grosjean, Roland Grave, F. Schleimer, F. Goedert +3 more | 1982-07-20 |