Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4197160 | Process by means of which moulded coke can be obtained from non-cokable coals | Roger Degrave | 1980-04-08 |
| 4193355 | Furnace walls which can be used at high temperatures | Alban Dondeyne, Paul Ravez, Louis Soubrier | 1980-03-18 |