Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9835331 | Ceramic bottom lining of a blast furnace hearth | Jacques Piret | 2017-12-05 |
| 9587882 | Hearth for a metallurgical furnace having an improved wall lining | Jacques Piret | 2017-03-07 |