Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4906292 | Composite article having a tubular sheath containing a compacted material, for the treatment of liquid metals, and process for the production of said article | Michel Douchy | 1990-03-06 |
| 4816068 | Composite article having a tubular sheath containing a compacted material, for the treatment of liquid metals, and process for the production of said article | Michel Douchy | 1989-03-28 |
| 4555265 | Method of treating steel with calcium, to obtain a steel well adapted to cold forming, with a low silicon content | Andre Gueussier | 1985-11-26 |
| 4531972 | Method for the fabrication of steels with high machinability | Andre Gueussier | 1985-07-30 |