Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10125413 | Method for producing manganese containing ferroalloy | Helge Krogerus, Visa Kivinen | 2018-11-13 |
| 9359655 | Metallurgical composition for the manufacture of ferrochrome | Helge Krogerus | 2016-06-07 |