Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5404655 | Method and apparatus for regulating the sand discharge during the thermal regeneration of used foundry sand in fluidized bed kilns | Volker Godderidge | 1995-04-11 |
| 5289920 | Process for thermically recovering old sands obtained in casting plants and for treating the dusts obtained during circulation of the sand | Volker Godderidge | 1994-03-01 |