US3122500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flotation of barite
Assignee: Magnet Cove Barium Corp
•
Filing: 1962-01-24
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Granted: 1964-02-25
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Expires: 1982-01-24
Abstract
No abstract record available.
Inventors
- 👤 James T Gullett
- 👤 William A Reddie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:08
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/012; B03D1/008; B03D2201/00; B03D2201/02; B03D2203/00; B03D2203/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
IN A FROTH-FLOTATION PROCESS FOR SEPARATING BARITE FROM GANGUE WHEREIN A FINELY GROUND BARITE ORE IS SUSPENDED IN WATER, THE RESULTING PULP IS AGITATED AND AERATED IN THE PRESENCE OF A COLLECTING AGENT, AND BARITE IS RECOVERED FROM THE FROTH, THAT IMPROVEMENT WHICH COMPRISES CARRYING OUT FROTH-FLOTATION IN THE PRESENCE OF A FATTY ACID HAVING 8 TO 20 CARBON ATOMS PER MOLECULE AND AN ALKALI METAL SALT OF A SULFATED STILL BOTTOMS ADDUCT, MADE BY ADDUCTING A STILL BOTTOMS, DERIVED FROM A PROCESS FOR ALKYLATING PHENOL WITH A POLYMERIZED ALKENE, WITH FROM 1.5 TO 3.0 TIMES ITS WEIGHT OF ETHYLENE OXIDE, SULFATING THE ADDUCT AND NEUTRALIZING THE RESULTING PRODUCT WITH AN ALKALI HYDROXIDE, WHEREIN THE ALKENE POLYMERIZED CONTAINS FROM 2 TO 4 CARBON ATOMS.
Claim 2
Dependent Claim
124 words
IN A FROTH-FLOTATION PROCESS FOR SEPARATING BARITE FROM GANGUE WHEREIN A FINELY GROUND BARITE ORE IS SUSPENDED IN WATER, THE RESULTING PULP IS AGITATED AND AERATED IN THE PRESENCE OF A COLLECTING AGENT, AND BARITE IS RECOVERED FROM THE FROTH, THAT IMPROVEMENT WHICH COMPRISES CARRYING OUT FROTH-FLOTATION IN THE PRESENCE OF A FATTY ACID HAVING 8 TO 20 CARBON ATOMS PER MOLECULE AND AN ALKALI METAL SALT OF A SULFATED STILL BOTTOMS ADDUCT, MADE BY ADDUCTING A STILL BOTTOMS, DERIVED FROM A PROCESS FOR ALKYLATING PHENOL WITH A POLYMERIZED ALKENE, WITH FROM 1.5 TO 3.0 TIMES ITS WEIGHT OF ETHYLENE OXIDE, SULFATING THE ADDUCT AND NEUTRALIZING THE RESULTING PRODUCT WITH AN ALKALI HYDROXIDE, WHEREIN THE ALKENE POLYMERIZED CONTAINS FROM 2 TO 4 CARBON ATOMS.
References Cited (Backward Citations)
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Cited
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Cited
US2547148A
Cited
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Cited
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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) | 1967-02-24 | 1967-08-26 | 1968-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-24 | 1971-08-26 | 1972-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-24 | 1975-08-26 | 1976-02-25 | $7700.00 | Window Closed / Lapsed |