US3282418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sylvite recovery process
Assignee: Cyprus Amax Minerals Co
•
Filing: 1963-10-31
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Granted: 1966-11-01
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Expires: 1983-10-31
Abstract
No abstract record available.
Inventors
- 👤 Charles W Abernethy
- 👤 Milton H Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:58
CPC Classifications
C; C01; C01D; C01D3/00; C01D3/04; C01D3/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
104 words
IN A FLOTATION PROCESS FOR IMPROVING THE RECOVERY OF SYLVITE VALUES FROM ORES COMPRISING COMMINUTING, CONDITIONING, AND SUBMITTING TO FLOTATION, SYLVINTE ORE, THE IMPROVEMENT IN COMBINATION THEREWITH OF DRIVING SAID COMMINUTED ORE INTO A FRACTION OF RELATIVELY SMALL PARTICLES AND A FRACTION OF RELATIVELY LARGE PARTICLES CONDITIONING SAID LARGE FRACTION ONLY, ONLY SUBJECTING SAID CONDITIONED FRACTION TO A ROUGHER FROTH FLOTATION, RECOVERING A COARSE CONCENTRATE OF SYLVITE VALUES AS FIRST PRODUCT FROM SAID ROUGHER FLOTATION, ADMIXING AN INTERMEDIATE CONCENTRATE FROM SAID ROUGHER FLOTATION WITH SAID SMALL FRACTION, SUBMITTING SAID ADMIXTURE TO, AND RECOVERING SYLVITE VALUE AS SECOND PRODUCT FROM, A CLEANER FROTH FLOTATION STEP.
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) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |