Verbaan; Bernard
Patent Applications and Registrations
Patent applications and USPTO patent grants for Verbaan; Bernard.The latest application filed is for "recovery of tungsten valves from alkaline solutions".
- Verbaan; Bernard - Fontainebleau Randburg ZA
- Verbaan; Bernard - Randburg ZA
| Patent | Date |
|---|---|
| Recovery of tungsten valves from alkaline solutions Grant 4,654,131 - Verbaan March 31, 1 | 1987-03-31 |
| Leaching of sulphidic mattes containing non-ferrous metals and iron Grant 4,431,613 - Verbaan February 14, 1 | 1984-02-14 |
| Leaching of zinc containing sulphide minerals Grant 4,330,379 - Verbaan May 18, 1 | 1982-05-18 |
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