Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4404292 | Refractory material intended especially for contacting molten aluminum and process for its manufacture | — | 1983-09-13 |
| 4309371 | Preparing refractory insulating products having controlled porosity by the wet method | Michel Marchais | 1982-01-05 |