Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4717419 | Method for treating iron-bearing slags containing precious metals, particularly slags created in the smelting process of copper and nickel | Keith B. Murden, Heikki Saari | 1988-01-05 |
| 4642133 | Process for chlorinating volatilization of metals which are present in oxidic iron ores or concentrates | Mauri J. Peuralinna, Olavi A. Aaltonen | 1987-02-10 |
| 4394164 | Process for removal of harmful impurities from metallurgical sulphide melts | Kaarina M. E. Kaenniemi | 1983-07-19 |
| 4259106 | Process for the roasting and chlorination of finely-divided iron ores and concentrates containing non-ferrous metals | Olavi A. Aaltonen | 1981-03-31 |
| 4211553 | Method of refining of melts by means of a pulverous solid material and/or a gas | Matti E. Honkaniemi, Helge Krogerus, Launo L. Lilja, John Henrik Relander, Frans H. Tuovinen | 1980-07-08 |