Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5108495 | Method controlling a process by impedance analysis | Seppo Heimala | 1992-04-28 |
| 4561970 | Process for the froth flotation of complex metal compounds | Seppo Heimala | 1985-12-31 |
| 4431614 | Process for the separation of gold and silver from complex sulfide ores and concentrates | Simo A. I. Makipirtti, Veikko Polvi, Pekka T. Setala | 1984-02-14 |
| 4385038 | Flotation recovery of lead, silver and gold as sulfides from electrolytic zinc process residues | Jussi K. Rastas, Vaino V. H. Hintikka, Jaakko Leppinen, Aimo Järvinen | 1983-05-24 |
| 4317715 | Process for the selective froth-flotation of phosphate and carbonate minerals from finely-divided phosphate-carbonate-silicate ores or concentrates | Vaino V. H. Hintikka | 1982-03-02 |