US3094485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flotation procedures
Assignee: Union Carbide Corp
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Filing: 1959-01-02
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Granted: 1963-06-18
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Expires: 1979-01-02
Abstract
No abstract record available.
Inventors
- 👤 Antoine M Gaudin
- 👤 Spedden Henry Rush
- 👤 John H Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:45
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/002; B03D2203/00; B03D2203/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
IN A FLOATION PROCESS WHEREIN CALCIUM TUNGSTSTE IS SEPARATED FROM A MIXTURE OF SAID MINERAL WITH A GANGUE CONTAINING AT LEAST ONE MINERAL OF THE GROUP CONSISTING OF CALCITE AND FLUORITE BY THE ADDDITION TO AN AQUEOUS SLURRY OF SAID MIXTURE IOF AN ORGANIC FLOTATION REAGENT WHEREBY THE MAJOR PORTION OF SAID CALCIUM TUNGSTATE IS FLOATED TO THE SURFACE OF SAID SLURRY AND REMOVED THEREFROM, AND THE MAJOR PORTION OF SAID GANGUE REMAINS IN SAID SLURRY, THE IMPROVEMENT WHICH COMPRISES ADDING TO SAID SLURRY AT LEAST A SUBSTANTIAL PORTION OF AT LEAST ONE WATER-SOLUBLE PERMANGANATE SELECTED FROM THE GROUP CONSISTING OF SODIUM PERMANGANATE AND POTASSIUM PERMANGANATE, WHEREBY THE PROPENSITY OF SAID GANGUE TO FLOAT WITH SAID CALCIUM TUNGSTATE IS SUBSTANTIALLY DECREASED.
Claim 2
Dependent Claim
121 words
IN A FLOATION PROCESS WHEREIN CALCIUM TUNGSTSTE IS SEPARATED FROM A MIXTURE OF SAID MINERAL WITH A GANGUE CONTAINING AT LEAST ONE MINERAL OF THE GROUP CONSISTING OF CALCITE AND FLUORITE BY THE ADDDITION TO AN AQUEOUS SLURRY OF SAID MIXTURE IOF AN ORGANIC FLOTATION REAGENT WHEREBY THE MAJOR PORTION OF SAID CALCIUM TUNGSTATE IS FLOATED TO THE SURFACE OF SAID SLURRY AND REMOVED THEREFROM, AND THE MAJOR PORTION OF SAID GANGUE REMAINS IN SAID SLURRY, THE IMPROVEMENT WHICH COMPRISES ADDING TO SAID SLURRY AT LEAST A SUBSTANTIAL PORTION OF AT LEAST ONE WATER-SOLUBLE PERMANGANATE SELECTED FROM THE GROUP CONSISTING OF SODIUM PERMANGANATE AND POTASSIUM PERMANGANATE, WHEREBY THE PROPENSITY OF SAID GANGUE TO FLOAT WITH SAID CALCIUM TUNGSTATE IS SUBSTANTIALLY DECREASED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |