US2643770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flotation of mica with sulfonates
Assignee: Wyeth Holdings LLC
•
Filing: 1949-11-26
•
Granted: 1953-06-30
•
Expires: 1969-11-26
Abstract
No abstract record available.
Inventors
- 👤 Gieseke Elmer William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:25
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/02; B03D1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
AN IMPROVED PROCESS OF BENEFICIATING MICA ORE WHICH IS SUBSTANTIALLY FREE OF GARNET, WHICH COMPRISES FORMING AN AQUEOUS PULP OF THE SIZEREDUCED ORE, CONDITIONING THE ORE PULP WITH A REAGENT COMBINATION COMPRISING A STRONG INORGANIC MINERAL ACID OTHER THAN HYDROFLUORIC, AN OILING AGENT, A FROTHER, AND AN ANIONIC COLLECTOR SELECTED FROM THE GROUP CONSISTING OF WATER-SOLUBLE SULFONATED PETROLEUM HYDROCARBONS OF THE GREEN ACID TYPE, WATER-INSOLUBLE PETROLEUM SULFONATES OF THE MAHOGANY ACID TYPE, AND MIXTURES THEREOF, OBTAINED IN THE REFINING OF LUBRICATING OIL STOCKS, AND THE WATER-SOLUBLE SALTS OF SUCH SULFONATES; SUBJECTING THE CONDITIONED ORE TO AERATION AND AGITATION AT A PH OF LESS THAN 6 AND COLLECTING THE PURIFIED MICA AS A FROTH CONCENTRATE, SUBSTANTIALLY FREE OF GANGUE.
Claim 2
Dependent Claim
118 words
AN IMPROVED PROCESS OF BENEFICIATING MICA ORE WHICH IS SUBSTANTIALLY FREE OF GARNET, WHICH COMPRISES FORMING AN AQUEOUS PULP OF THE SIZEREDUCED ORE, CONDITIONING THE ORE PULP WITH A REAGENT COMBINATION COMPRISING A STRONG INORGANIC MINERAL ACID OTHER THAN HYDROFLUORIC, AN OILING AGENT, A FROTHER, AND AN ANIONIC COLLECTOR SELECTED FROM THE GROUP CONSISTING OF WATER-SOLUBLE SULFONATED PETROLEUM HYDROCARBONS OF THE GREEN ACID TYPE, WATER-INSOLUBLE PETROLEUM SULFONATES OF THE MAHOGANY ACID TYPE, AND MIXTURES THEREOF, OBTAINED IN THE REFINING OF LUBRICATING OIL STOCKS, AND THE WATER-SOLUBLE SALTS OF SUCH SULFONATES; SUBJECTING THE CONDITIONED ORE TO AERATION AND AGITATION AT A PH OF LESS THAN 6 AND COLLECTING THE PURIFIED MICA AS A FROTH CONCENTRATE, SUBSTANTIALLY FREE OF GANGUE.
References Cited (Backward Citations)
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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) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |