Patent US2525146A successfully refreshed from Google Patents.
US2525146A
Expired / Lapsed
US
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Selective separation by flotation of phosphatic titanium-oxide mixtures
Assignee: Wyeth Holdings LLC
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Filing: 1945-12-20
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Granted: 1950-10-10
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Expires: 1965-12-20
Abstract
No abstract record available.
Inventors
- 👤 Lynn L Mcmurray
- 👤 Samuel P Moyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:00
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/02; B03D1/021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A METHOD OF BENEFICIATING ORES OF TITANIUMBEARING OXIDE MINERALS CONTAINING EXCESSIVE AMOUNTS OF PHOSPHOROUS-BEARING MINERALS AND SILIA-BEARING GANGUE WHICH COMPRISES THE STEPS OF REDUCING THE ORE TO SUITABLE SIZE FOR FLOTATION FEED, MAKING A SUBSTANTIALLY SLIME-FREE AQUEOUS PULP THEREOF, CONDITIONING THE PULP WITH AN EFFECTIVE AMOUNT OF AN ANIONIC-TYPE PROMOTER, SELECTED FROM THE GROUP CONSISTING OF THE HIGHER ALIPHATIC FATTY ACIDS, RESIN ACIDS, NAPHTENIC ACIDS, TALLOEL, MIXTURES THEREOF, THEIR SODIUM. POTASSIUM, AND AMMONIUM SALTS AND MIXTURES OF THESE MATERIALS, TO FLOAT SUBSTANTIALLY ALL THE TITANIUM AND PHOSPHOROUS MINERALS THEREFROM, SUBJECTING THE CONDITIONED PULP TO FROTH FLOTATION; COLLECTING THE RESULTANT FLOTATION BULK CONCENTRATE; CONDITIONING AN QUEOUS PULP OF THE BULK CONCENTRATE WITH AN EFFECTIVE AMOUNT OF CAUSTIC
Claim 2
Independent Claim
116 words
A METHOD OF BENEFICIATING ORES OF TITANIUMBEARING OXIDE MINERALS CONTAINING EXCESSIVE AMOUNTS OF PHOSPHOROUS-BEARING MINERALS AND SILIA-BEARING GANGUE WHICH COMPRISES THE STEPS OF REDUCING THE ORE TO SUITABLE SIZE FOR FLOTATION FEED, MAKING A SUBSTANTIALLY SLIME-FREE AQUEOUS PULP THEREOF, CONDITIONING THE PULP WITH AN EFFECTIVE AMOUNT OF AN ANIONIC-TYPE PROMOTER, SELECTED FROM THE GROUP CONSISTING OF THE HIGHER ALIPHATIC FATTY ACIDS, RESIN ACIDS, NAPHTENIC ACIDS, TALLOEL, MIXTURES THEREOF, THEIR SODIUM. POTASSIUM, AND AMMONIUM SALTS AND MIXTURES OF THESE MATERIALS, TO FLOAT SUBSTANTIALLY ALL THE TITANIUM AND PHOSPHOROUS MINERALS THEREFROM, SUBJECTING THE CONDITIONED PULP TO FROTH FLOTATION; COLLECTING THE RESULTANT FLOTATION BULK CONCENTRATE; CONDITIONING AN QUEOUS PULP OF THE BULK CONCENTRATE WITH AN EFFECTIVE AMOUNT OF CAUSTIC
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) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |