Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6511591 | Method for the electrolytic refining of copper | Henri Virtanen | 2003-01-28 |
| 4526650 | Method for regenerating pickling acids | Seppo I. Blomquist, Markku T. Saarela, Bror Nyman, Kaj Lindroos, Timo T. Koivunen +1 more | 1985-07-02 |