Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876122 | Package capable of preventing foam formation, method of manufacturing such a package, and antifoaming agent | — | 1989-10-24 |
| 4830739 | Process and composition for the froth flotation beneficiation of iron minerals from iron ores | Marie Ernstsson, Bo Idstrom | 1989-05-16 |
| 4828687 | Froth flotation process and collector therefor | Anders Klingberg | 1989-05-09 |
| 4795578 | Process and composition for the froth flotation beneficiation of iron minerals from iron ores | Marie Ernstsson, Bo Idstrom | 1989-01-03 |