US3099620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wet beneficiating of phosphate ores
Assignee: International Minerals and Chemical Corp
•
Filing: 1960-08-31
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Granted: 1963-07-30
•
Expires: 1980-08-31
Abstract
No abstract record available.
Inventors
- 👤 Howard W Adam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:58
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/01; B03D1/008; B03D2203/00; B03D2203/02; B03D2203/04; B03D2203/06; Y; Y10; Y10S; Y10S209/00; Y10S209/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
THE METHOD OF BENEFICIATING UNSIZED PHOSPHATE ORE WHICH COMPRISES: (1) SUBJECTING AN UNSIZED LIBERATED DESLIMED PHOSPHATE ORE FRACTION CONTAINING PARTICLES OF A MESH SIZE OF FROM ABOUT 10 MESH TO ABOUT 200 MESH TO FORTH FLOTATION IN THE PRESENCE OF AN ANIONIC FLOTATION REAGENT TO PROVIDE A PHOSPHATE-RICH OVERFLOW CONCENTRATE AND AN UNDERFLOW STREAM; (2) SUBJECTING THE UNDERFLOW FROM (1) TO FROTH FLOTATION IN THE PRESENCE OF A CATIONIC FLOTATION REAGENT TO PROVIDE A PHOSPHATE-CONTAINING UNDERFLOW CONCENTRATE AND AN OVERFLOW DISCARD TAIL; AND
Claim 2
Independent Claim
83 words
THE METHOD OF BENEFICIATING UNSIZED PHOSPHATE ORE WHICH COMPRISES: (1) SUBJECTING AN UNSIZED LIBERATED DESLIMED PHOSPHATE ORE FRACTION CONTAINING PARTICLES OF A MESH SIZE OF FROM ABOUT 10 MESH TO ABOUT 200 MESH TO FORTH FLOTATION IN THE PRESENCE OF AN ANIONIC FLOTATION REAGENT TO PROVIDE A PHOSPHATE-RICH OVERFLOW CONCENTRATE AND AN UNDERFLOW STREAM; (2) SUBJECTING THE UNDERFLOW FROM (1) TO FROTH FLOTATION IN THE PRESENCE OF A CATIONIC FLOTATION REAGENT TO PROVIDE A PHOSPHATE-CONTAINING UNDERFLOW CONCENTRATE AND AN OVERFLOW DISCARD TAIL; AND
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |