US2914174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphate mineral beneficiation process
Assignee: International Minerals and Chemical Corp
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Filing: 1957-12-30
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Granted: 1959-11-24
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Expires: 1977-12-30
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Haseman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:32
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/01; B03D2201/00; B03D2201/02; B03D2203/00; B03D2203/02; B03D2203/04; B03D2203/06; Y; Y10; Y10S; Y10S209/00; Y10S209/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A PROCESS FOR THE BENEFICIATION OF A SILICA CONTAINING PHOSPHATE ORE WHICH COMPRISES SUBJECTING SAID ORE TO FROTH FLOTATION IN THE PRESENCEOF A COLLECTOR CONSISTING OF A HIGH BOILING AMINE RESIDUE PRODUCED BY (A) SYNTHESIS OF MIXED AMINES BY REDUCTION OF A NATURAL FATTY ACID MIXTURE SELECTED FROM THE GROUP CONSISTING OF THE COCONUT OIL FATTY ACIDS, THE TALLOW FATTY ACIDS, AND THE SOY BEAN FARRY ACIDS; AND (B) REMOVING FROM THE CRUDE SYNTHESIS REACTION MIXTURE THE AMINES CONTAINING NOT MORE THAN ABOUT EIGHTEEN CARBON ATOMS; THE RESIDUE OF SAID REACTION MIXTURE REMAINING AFTER THE REMOVAL OF SAID FRACTION CONSTITUTING SAID COLLECTOR AND CONSISTING ESSENTIALLY OF MIXED AMINES CONTAINING MORE THAN EIGHTEEN CARBON ATOMS TOGETHER WITH MATERIAL PRESENT IN SAID CRUDE REACTION MIXTURE WHICH HAVE A BOILING POINT IN EXCESS OF THE TERMINAL BOILING POINT OF SAID REMOVED FRACTION.
Claim 2
Dependent Claim
139 words
A PROCESS FOR THE BENEFICIATION OF A SILICA CONTAINING PHOSPHATE ORE WHICH COMPRISES SUBJECTING SAID ORE TO FROTH FLOTATION IN THE PRESENCEOF A COLLECTOR CONSISTING OF A HIGH BOILING AMINE RESIDUE PRODUCED BY (A) SYNTHESIS OF MIXED AMINES BY REDUCTION OF A NATURAL FATTY ACID MIXTURE SELECTED FROM THE GROUP CONSISTING OF THE COCONUT OIL FATTY ACIDS, THE TALLOW FATTY ACIDS, AND THE SOY BEAN FARRY ACIDS; AND (B) REMOVING FROM THE CRUDE SYNTHESIS REACTION MIXTURE THE AMINES CONTAINING NOT MORE THAN ABOUT EIGHTEEN CARBON ATOMS; THE RESIDUE OF SAID REACTION MIXTURE REMAINING AFTER THE REMOVAL OF SAID FRACTION CONSTITUTING SAID COLLECTOR AND CONSISTING ESSENTIALLY OF MIXED AMINES CONTAINING MORE THAN EIGHTEEN CARBON ATOMS TOGETHER WITH MATERIAL PRESENT IN SAID CRUDE REACTION MIXTURE WHICH HAVE A BOILING POINT IN EXCESS OF THE TERMINAL BOILING POINT OF SAID REMOVED FRACTION.
References Cited (Backward Citations)
US2293640A
Cited
US2816870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |