| PATENT ASSIGNEE'S COUNTRY | USA |
| UPDATE | 07.99 |
| PATENT ASSIGNEE | This data is not available for free |
| PATENT CLAIMS |
- Forming aq. slurry comprised of -- Precious metal ore -- Dialkyl naphthalene disulfonic acid & -- Dialkyl dithiophosphinate (collector) - Collecting beneficiated minerals by subjecting slurry to froth flotation conditions |
| PATENT PHOTOCOPY | Available on request |
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