Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867851 | Process for regulating the acidity of all-Heelectrolytic cells | Jean-Luc Basquin | 1989-09-19 |
| 4857157 | Process and apparatus for controlling solid electrolyte additions to electrolytic cells for aluminum production | Alain Paternoga | 1989-08-15 |