Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4297326 | Method of producing a pure aluminiumoxide from solutions containing dissolved ions of aluminium and iron | Norvald Gjelsvik | 1981-10-27 |
| 4297327 | Method of precipitation of pure aluminiumchloride from solutions which contain ions of aluminium and magnesium | Norvald Gjelsvik, Gunnar Hannestad, Jan Torgersen | 1981-10-27 |