Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5178334 | Process for germanium ore upgrading | Patrick Hebert | 1993-01-12 |
| 4900431 | Process for upgrading andalusite | Cariou F. Volpi, Philippe Raveneau | 1990-02-13 |
| 4640710 | Process for recovering silver from sulfate solutions | Didier Beutier | 1987-02-03 |
| 4436616 | Process for the beneficiation of phosphate ores | Philippe Dufour, Guy Ranchin, deceased, by Marc Ranchin, legal heir, by Genevieve Ranchin, legal heir | 1984-03-13 |
| 4362558 | Process of upgrading nickeliferous oxide ores of lateritic origin | Andre Desnoes, Guy Ranchin, deceased | 1982-12-07 |