US3214018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Froth flotation of micaceous minerals
Assignee: Feldspar Corp
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Filing: 1962-10-08
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Granted: 1965-10-26
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Expires: 1982-10-08
Abstract
No abstract record available.
Inventors
- 👤 John P Neal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:54
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/01; B03D1/002; B03D1/006; B03D1/012; B03D2201/00; B03D2201/02; B03D2201/04; B03D2201/06; B03D2203/00; B03D2203/02; B03D2203/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A PROCESS FOR THE BENEFICIATION OF MICA-BEARING ORES WHICH COMPRISES THE STEPS OF: (A) FORMING AN AQUEOUS PULP OF A SIZE-REDUCED MICACEOUS ORE (B) CONDITIONING THE ORE PULP AT A PH OF 7 OR LESS WITH A REAGENT COMBINATION COMPRISING AN OILING AGENT, A FROTHER, A CATIONIC COLLECTOR AND A DEPRESSANT OF THE GENERAL FORMULA
Claim 2
Dependent Claim
55 words
A PROCESS FOR THE BENEFICIATION OF MICA-BEARING ORES WHICH COMPRISES THE STEPS OF: (A) FORMING AN AQUEOUS PULP OF A SIZE-REDUCED MICACEOUS ORE (B) CONDITIONING THE ORE PULP AT A PH OF 7 OR LESS WITH A REAGENT COMBINATION COMPRISING AN OILING AGENT, A FROTHER, A CATIONIC COLLECTOR AND A DEPRESSANT OF THE GENERAL FORMULA
References Cited (Backward Citations)
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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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |