Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4830739 | Process and composition for the froth flotation beneficiation of iron minerals from iron ores | Martin Hellsten, Bo Idstrom | 1989-05-16 |
| 4795578 | Process and composition for the froth flotation beneficiation of iron minerals from iron ores | Martin Hellsten, Bo Idstrom | 1989-01-03 |
| 4732667 | Process and composition for the froth flotation beneficiation of iron minerals from iron ores | Martin Hellsten, Bo Idstrom | 1988-03-22 |